| Records |
Author  |
Robberecht, H.; Van Grieken, R. |
| Title |
Determination of trace selenium in biological material by preconcentration and X-ray emission spectrometry |
Type |
A1 Journal article |
| Year |
1983 |
Publication |
Analytica chimica acta |
Abbreviated Journal |
|
| Volume |
147 |
Issue |
|
Pages |
113-121 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
Selenium is determined in the ng g−1 to μg g−1 range in biological and environmental samples. A wet digestion procedure was optimized with respect to volatility losses and recovery yields, by using 75Se metabolically incorporated into rat organs. Selenium is preconcentrated from the digestion liquid by a two-step reduction with 4 M HCl and ascorbic acid. The colloidal selenium formed is adsorbed on activated carbon and filtered on a Nucleopore membrane for measurement by energy-dispersive x-ray fluorescence. Almost complete recovery was obtained, and the detection limit was 20 ng, corresponding to 10 ng g−1 for a 2-g sample. Biological reference materials were analyzed with satisfactory results, and the accuracy of the method was good. |
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Wos |
A1983QH42100010 |
Publication Date |
2002-07-25 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0003-2670; 1873-4324 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:116442 |
Serial |
7794 |
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| Author |
Robberecht, H.; Van Grieken, R. |
| Title |
Selenium content and speciation in environmental waters determied by X-ray fluorescence spectroscopy |
Type |
H3 Book chapter |
| Year |
1980 |
Publication |
|
Abbreviated Journal |
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| Volume |
|
Issue |
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Pages |
362-366
T2 - Trace substances in environmental hea |
| Keywords |
H3 Book chapter; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Edition |
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ISBN |
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Additional Links |
UA library record |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:117481 |
Serial |
8505 |
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| Author |
Robberecht, H.; Van Grieken, R. |
| Title |
Selenium in environmental waters : determination, speciation and concentration levels |
Type |
A1 Journal article |
| Year |
1982 |
Publication |
Talanta : the international journal of pure and applied analytical chemistry |
Abbreviated Journal |
|
| Volume |
29 |
Issue |
10 |
Pages |
823-844 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
This article reviews the different methods used for the determination of selenium species in all types of environmental waters. Basic difficulties are discussed and the efficiency of the methods is explained in view of the sub-μg/1. concentration levels. Special attention is paid to preconcentration steps. Published data on speciation and concentration levels in various water samples are critically reviewed. |
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Wos |
A1982PK22900004 |
Publication Date |
2002-07-25 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0039-9140; 1873-3573 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:113627 |
Serial |
8509 |
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| Author |
Robberecht, H.; Van Grieken, R.; Shani, J.; Barak, S. |
| Title |
Evaluation of multi-element analysis of blood serum by energy-dispersive x-ray spectrometry |
Type |
A1 Journal article |
| Year |
1982 |
Publication |
Analytica chimica acta |
Abbreviated Journal |
|
| Volume |
136 |
Issue |
|
Pages |
285-292 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
Conventional energy-dispersive x-ray fluorescence is applied in the analysis of blood serum to give the concentrations of 710 elements simultaneously with minimal manipulation of the samples. Simple spotting onto a Mylar carrier of 250 μl of serum, doped with two internal standards, was chosen as the sample preparation step. Some 200 serum samples, analyzed in replicate (n = 26), were used to evaluate this procedure. The detection limits are 4 μg ml-1 for K and Ca, 0.50.2 μg ml-1 for Fe, Cu, Pb and Zn, and less than 0.1 μg ml-1 for Se, Rb and Sr. Well above these limits, the standard deviation is around 10%. Comparison with the results of other measurements on the same samples indicates an accuracy of that order. The simplicity and high throughput, and the possibility of automating the x.r.f. measurements, make the proposed procedure suitable for screening large numbers of sera. |
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Wos |
A1982NL48600032 |
Publication Date |
2002-07-25 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0003-2670; 1873-4324 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:116440 |
Serial |
7940 |
| Permanent link to this record |
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| Author |
Robberecht, H.; Van Grieken, R.; Van der Sloot, H.A. |
| Title |
OPtimized selenite determination in environmental waters by X-ray fluorescence |
Type |
H3 Book chapter |
| Year |
1980 |
Publication |
|
Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
463-468
T2 - Analytical techniques in environmenta |
| Keywords |
H3 Book chapter; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
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Wos |
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Publication Date |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:117482 |
Serial |
8343 |
| Permanent link to this record |
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| Author |
Robberecht, H.; Van Grieken, R.; van Sprundel, M.; vanden Berghe, D.; Deelstra, H. |
| Title |
Selenium in environmental and drinking waters of Belgium |
Type |
A1 Journal article |
| Year |
1983 |
Publication |
The science of the total environment |
Abbreviated Journal |
|
| Volume |
26 |
Issue |
2 |
Pages |
163-172 |
| Keywords |
A1 Journal article; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
The tetravalent and hexavalent selenium content of water samples can be determined by conventional energy-dispersive X-ray fluorescence after different preconcentration steps. Selenium values of nearly three-hundred different environmental and drinking water samples in Belgium are reported. The results are quite low, ranging from the detection limits up to 1 μg l−1. The concentration levels are compared to literature data and the speciation is discussed. The contribution of drinking water to the daily intake of selenium in Belgium ranges from less than 0.2 to 5%. |
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Thesis |
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Place of Publication |
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Editor |
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| Language |
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Wos |
A1983QD20900006 |
Publication Date |
2003-09-12 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0048-9697; 1879-1026 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:116647 |
Serial |
8508 |
| Permanent link to this record |
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| Author |
Robberecht, H.; vanden Berghe, D.; Deelstra, H.; Van Grieken, R. |
| Title |
Selenium in the Belgian soils and its uptake by rye-grass |
Type |
A1 Journal article |
| Year |
1982 |
Publication |
The science of the total environment |
Abbreviated Journal |
|
| Volume |
25 |
Issue |
1 |
Pages |
61-69 |
| Keywords |
A1 Journal article; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
Data obtained by atomic absorption spectroscopy showed a selenium concentration of only 0.11 ppm as an average value for the most representative agricultural soils in Belgium. The selenium content in rye-grass grown on different soil types was between 0.05 and 0.11 ppm, and positively correlated with the soil selenium level. Addition of selenium in the form of selenite to the different soil types resulted in an increased selenium uptake by the plant. The ultimate concentration in the plant depended on the structural and chemical composition of the soil. Twelve other elements were determined in the soils by energy-dispersive X-ray fluorescence; none showed a strong correlation with the soil selenium content or with the selenium uptake by ryegrass. |
| Address |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Wos |
A1982PJ93000006 |
Publication Date |
2003-09-12 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0048-9697; 1879-1026 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:116646 |
Serial |
8510 |
| Permanent link to this record |
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| Author |
Robberecht, H.J.; Van Grieken, R.E. |
| Title |
Sub-part-per-billion determination of total dissolved selenium and selenite in environmental waters by X-ray fluorescence spectrometry |
Type |
A1 Journal article |
| Year |
1980 |
Publication |
Analytical chemistry |
Abbreviated Journal |
|
| Volume |
52 |
Issue |
3 |
Pages |
449-453 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
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| Address |
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Thesis |
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Place of Publication |
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Editor |
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| Language |
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Wos |
A1980JG67900021 |
Publication Date |
2005-03-08 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0003-2700; 5206-882x |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:116514 |
Serial |
8613 |
| Permanent link to this record |
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| Author |
Robberecht, H.J.; Van Grieken, R.E.; Van den Bosch, P.A.; Deelstra, H.; vanden Berghe, D. |
| Title |
Losses of metabolically incorporated selenium in common digestion procedures for biological material |
Type |
A1 Journal article |
| Year |
1982 |
Publication |
Talanta : the international journal of pure and applied analytical chemistry |
Abbreviated Journal |
|
| Volume |
29 |
Issue |
11 |
Pages |
1025-1028 |
| Keywords |
A1 Journal article; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
Two common procedures for wet destruction of biological materials for subsequent determination of selenium have been investigated. Rat organs and biological fluids were endogenously labelled with 75Se to monitor losses during the procedures. Addition of nitric and perchloric acids with gradual heating up to 210° seemed to be the best method: at this temperature the labelled selenium was still recovered quantitatively, and the destruction was fast and efficient. |
| Address |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Wos |
A1982PP35500009 |
Publication Date |
2002-07-25 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0039-9140; 1873-3573 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:116568 |
Serial |
8186 |
| Permanent link to this record |
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| Author |
Roekens, E.; Bleyen, C.; Van Grieken, R. |
| Title |
Sulphite and sulphate concentrations in weathering products of sandy limestone and in deposition samples |
Type |
A1 Journal article |
| Year |
1989 |
Publication |
Environmental pollution |
Abbreviated Journal |
|
| Volume |
57 |
Issue |
4 |
Pages |
289-298 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
The sulphite and sulphate concentrations in weathering products of limestone and in wet and total deposition samples were measured by the modified West-Gaeke method and by ion chromatography. The sulphite content in the weathering crust and in the runoff rainwater of two historical buildings in Belgium, was always much lower than the sulphate content. The maximum sulphite to sulphate ratio was 2·5%. The sulphite concentration in wet and total deposition samples was in the low or sub ppm range except during two misty periods when the sulphite concentration was 6·8 and 21 mg litre−1. In those samples a high sulphate concentration was also found (nl. 57 and 137 mg litre−1, respectively). |
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Place of Publication |
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Editor |
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Wos |
A1989U130000003 |
Publication Date |
2003-09-12 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0269-7491; 1873-6424 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:116814 |
Serial |
8621 |
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| Author |
Roekens, E.; Komy, Z.; Leysen, L.; Veny, P.; Van Grieken, R. |
| Title |
Chemistry of precipitation near a limestone building |
Type |
A1 Journal article |
| Year |
1988 |
Publication |
Water, air and soil pollution |
Abbreviated Journal |
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| Volume |
38 |
Issue |
3/4 |
Pages |
273-282 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
A total of 82 samples of wet and total deposition were sampled near the limestone cathedral at Mechelen, Belgium, which is presently being affected seriously by air pollution, and at a reference site. Most of these samples were analyzed for 10 major and 7 trace ions in solution and for 15 elements in suspension. It appeared that calcite, released from the building, effectively neutralizes the rainwater in the near vicinity and produces high Ca and bicarbonate concentrations. Heavy metal concentrations are hardly affected by the building. |
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Place of Publication |
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Editor |
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Wos |
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Publication Date |
2014-08-25 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0049-6979; 1573-2932 |
ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:116806 |
Serial |
7663 |
| Permanent link to this record |
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| Author |
Roekens, E.; Leysen, L.; Van Grieken, R.; Komy, Z. |
| Title |
Chemical characterisation of weathering crust and run-off water for a deteriorated limestone cathedral |
Type |
P3 Proceeding |
| Year |
1986 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
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Place of Publication |
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Wos |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:117506 |
Serial |
7641 |
| Permanent link to this record |
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| Author |
Roekens, E.; Van Grieken, R. |
| Title |
Gevolgen van luchtverontreiniging op historische gebouwen |
Type |
A2 Journal article |
| Year |
1987 |
Publication |
Ons erfdeel |
Abbreviated Journal |
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| Volume |
30 |
Issue |
2 |
Pages |
361-366 |
| Keywords |
A2 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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Place of Publication |
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Editor |
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Wos |
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Publication Date |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0030-2651 |
ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:116776 |
Serial |
8003 |
| Permanent link to this record |
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| Author |
Roekens, E.; Van Grieken, R. |
| Title |
Rates of air pollution induced surface recession and material loss for a cathedral in Belgium |
Type |
A1 Journal article |
| Year |
1989 |
Publication |
Atmospheric environment |
Abbreviated Journal |
|
| Volume |
23 |
Issue |
1 |
Pages |
271-287 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
Runoff water samples were taken at the St. Rombout's Cathedral (Mechelen, Belgium), which was constructed with sandy limestones of Balegem and Gobertingen. Gypsum appeared to be the principal deterioration compound. The mean annual surface recession from the cathedral was calculated to be around 20 μm. Yearly several tons of stone material are flushed away from the cathedral with the rain water. |
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Place of Publication |
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Editor |
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Wos |
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Publication Date |
2003-08-06 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0004-6981 |
ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:116455 |
Serial |
8454 |
| Permanent link to this record |
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| Author |
Roekens, E.; Van Raemdonck, C.; Leysen, L.; Chakravorty, R.; Van Grieken, R. |
| Title |
Weathering products and surface recession rates for sandy limestones exposed to air pollution |
Type |
H3 Book chapter |
| Year |
1987 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
707-714
T2 - Acid rain : scientific and technical |
| Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
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| Address |
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Thesis |
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Place of Publication |
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Editor |
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Wos |
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Publication Date |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:117536 |
Serial |
8756 |
| Permanent link to this record |
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| Author |
Roekens, E.J.; Van Grieken, R.E. |
| Title |
Effects of titanium dioxide industry waste dumping on sea water chemistry |
Type |
A1 Journal article |
| Year |
1983 |
Publication |
Water research |
Abbreviated Journal |
|
| Volume |
17 |
Issue |
10 |
Pages |
1385-1392 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
An investigation was made to determine the influence of the dumping of a 1000 ton day−1, on the average, of acid-iron waste from the titanium dioxide industry into the shallow but turbulent Southern Bight of the North Sea. This waste contains some 20% sulfuric acid and 2% iron. After the passage of the barge that discharges 10 ton of waste min−1 into its wake, the vertical and horizontal distributions of the pH, iron-concentration and turbidity were measured as a function of time. It appeared that a few seconds after the discharge and for a very brief period, the pH was down to approx. 4 and the Fe-concentration was 13 mg l−1. More than 1 min after the discharge a pH below 6 and an iron-level above 3 mg l−1 could not be detected anywhere. The measured factor for waste dilution by sea water, based on the observed acid and iron concentration in the waste and in the discharge track, were around 5000 after 5 min, 9000 after 10 min and 80,000 after 20 min. Before and long after the dumping, the total iron-concentration in this Southern Bight area was around 100 μg l−1, but this high level might be due to natural causes. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Wos |
A1983RJ42300025 |
Publication Date |
2003-08-07 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0043-1354; 1879-2448 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:116690 |
Serial |
7850 |
| Permanent link to this record |
| |
|
| |
| Author |
Roekens, E.J.; Van Grieken, R.E. |
| Title |
Kinetics of iron(II) oxidation in seawater of various pH |
Type |
A1 Journal article |
| Year |
1983 |
Publication |
Marine chemistry |
Abbreviated Journal |
|
| Volume |
13 |
Issue |
3 |
Pages |
195-202 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
The rate of iron(II) oxidation in North Sea water of pH 5.510 in the range 1025°C has been studied. The oxygenation rate depends linearly on the iron(II) and dissolved oxygen concentrations. The second-order dependence on [OH−], found by several investigators for synthetic solutions, was confirmed in seawater, but only for pOH > 6.9. For pOH < 5.9 the rate appeared to be independent of the pOH. In the intermediate range, pOH 5.96.9, corresponding to the natural pH of seawater, a first-order dependence on the pOH is obeyed. The important discrepancy in the literature between the second-order rate constant for NaCHO3 solutions and for seawater can be attributed predominantly to the incorrect assumption of a second-order pOH dependence in natural seawater. The results can be useful, for example, in predicting the effect of dumping acidic iron waste from the titanium-dioxide industry into the ocean. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
|
| Language |
|
Wos |
A1983RD52600003 |
Publication Date |
2003-08-08 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0304-4203; 1872-7581 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:116695 |
Serial |
8140 |
| Permanent link to this record |
| |
|
| |
| Author |
Roekens, E.J.; Van Grieken, R.E. |
| Title |
Kinetics of iron(II) oxidation in seawater of various pH : reply |
Type |
A1 Journal article |
| Year |
1984 |
Publication |
Marine chemistry |
Abbreviated Journal |
|
| Volume |
15 |
Issue |
3 |
Pages |
281-284 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
|
| Address |
|
| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Wos |
A1984TZ60600009 |
Publication Date |
2003-08-08 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0304-4203; 1872-7581 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:116711 |
Serial |
8141 |
| Permanent link to this record |
| |
|
| |
| Author |
Roet, D.; van Espen, P. |
| Title |
Monte Carlo simulation of X-ray spectra from low energy electrons using optical data |
Type |
A1 Journal article |
| Year |
2010 |
Publication |
Nuclear instruments and methods in physics research: B: beam interactions with materials and atoms |
Abbreviated Journal |
|
| Volume |
268 |
Issue |
17/18 |
Pages |
2794-2800 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
An approach using optical data to simulate both the bremsstrahlung continuum and characteristic K and L X-ray lines generated by low energy electrons (cfr. electron microscopy) in solids is discussed in this paper. The necessary analytical expressions together with the data to calculate the relevant cross sections for elastic and inelastic interactions at these energies along with variance reduction techniques are given. The results of the Monte Carlo simulation are compared to experimental data measured with a JEOL 6300 electron microscope. |
| Address |
|
| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
|
Wos |
000281498900039 |
Publication Date |
2010-07-15 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0168-583x |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:84261 |
Serial |
8281 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Artaxo, P.; Van Grieken, R. |
| Title |
Aerosols in Santiago de Chile : a study using receptor modeling with X-ray fluorescence and single particle analysis |
Type |
A1 Journal article |
| Year |
1990 |
Publication |
Atmospheric environment: part B : urban atmosphere |
Abbreviated Journal |
|
| Volume |
24 |
Issue |
2 |
Pages |
227-241 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
Between 15 January and 26 February 1987, 51 fine and coarse mode aerosol samples were collected at the Universidad de Santiago de Chile Planetarium using a dichotomous sampler. The samples were analyzed by X-ray fluorescence for up to 17 elements (Mg, Al, Si, P, S, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Br and Pb). Aerosol particles were individually studied by Electron Probe Microanalysis (EPMA) and Laser Microprobe Mass Analysis (LAMMA). The data set consisting of aerosol elemental concentrations and meteorological variables was subjected to Principal Factor Analysis (PFA), allowing the identification of six fine mode particle source classes (soil, industrial, sulfate particles, traffic, residual oil, wood-burnings), and five coarse mode particle source classes (soil, industrial, traffic, residual oil, sulfate particles). Both PFA solutions explained about 81 and 90% of the total variance in the data set, respectively. The regression of elemental mass concentrations on the Absolute Principal Factor Scores allowed the estimation of the contribution of the different source classes to the Santiago aerosol. Within the fine fraction, secondary SO42− particles were responsible for about 49% of the fine mode aerosol mass concentration, while 26, 13, 6.4 and 5.6% were attributed to wood-burning/car exhausts, residual oil combustion, soil dust/metallurgical, and soil dust/wood-burning releases, respectively. The coarse fraction source apportionment was mainly dominated by soil dust, accounting for 74% of the coarse mode aerosol mass concentration. A composite of soil dust and industrial release accounted for 13%; a composite of secondary sulfates contributed with 9%; a composite of soil dust and automotive emissions, and secondary sulfates were responsible for 4 and 0.03% of the coarse aerosol mass concentration, respectively. EPMA results are in satisfactory agreement with those from the bulk analysis and allowed the identification of eight particle types in both fine and coarse mode aerosols, pertaining to different source classes, namely soil, seaspray, secondary SO42−, metallurgical emissions and biomass burning release. EPMA also evidenced that one of the most abundant particle types corresponded to marine aerosol, having an average diameter of 0.7 μm for the fine mode and 2.2 μm for the coarse mode aerosol. LAMMA results indicate that, in fact, seaspray has been transported into the city of Santiago de Chile airshed, suffering several transformations and a sulfur enrichment. This analytical technique also provided evidence of the abundance of carbon-rich particles, which were not detected by either the bulk X-ray analysis or EPMA; they are probably due to fossil-fuel combustion releases. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Wos |
|
Publication Date |
2003-08-06 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0957-1272; 1878-2132 |
ISBN |
|
Additional Links |
UA library record |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:116456 |
Serial |
7427 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Figueroa, L.; Janssens, K.H.; Van Espen, P.E.; Adams, F.C.; Van Grieken, R.E. |
| Title |
The elemental composition of airborne particulate matter in the Atacama desert, Chile |
Type |
A1 Journal article |
| Year |
1990 |
Publication |
The science of the total environment |
Abbreviated Journal |
|
| Volume |
91 |
Issue |
|
Pages |
251-267 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
Air particulate samples were collected at Chapiquiña near Arica (Chile) with a six-stage cascade impactor for about 17-day periods during a 31 month interval. Sixteen elements were determined by energy dispersive X-ray fluorescence analysis, and the elemental concentrations were subjected to principal factor analysis. The variability with time of the coarse particles was described by two factors both related to soil dispersion, whereas the fine particle variations could be explained by a third factor related to marine influence. Enrichment factors were compared with those obtained in other remote continental areas, in particular those of air particulate matter sampled at Chacaltaya, Bolivia. Results point to a negligible anthropogenic influence. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Wos |
A1990CM36100019 |
Publication Date |
2003-09-12 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0048-9697 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:116652 |
Serial |
5602 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Goossens, D.; Van Grieken, R. |
| Title |
Penetration of atmospheric aerosols during collection in cellulose filters, studied by secondary ion mass spectrometry |
Type |
A1 Journal article |
| Year |
1989 |
Publication |
Journal of aerosol science |
Abbreviated Journal |
|
| Volume |
20 |
Issue |
5 |
Pages |
569-574 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
The penetration of aerosol particles in a Whatman-41 cellulose filter has been studied via the depth profiles of different elements present in the aerosol. Depth profiles were obtained by analyzing both fine and coarse fractions from a dichotomous sampler by secondary ion mass spectrometry. The fine particles had an aerodynamic diameter dae of less than 2.5 μm, whereas the coarse fraction had 2.5 ≤ dae ≤ 15 μm. Elements such as Al, Si, Ca, Ti and Fe were associated with coarse airborne particles, while S, Cl, Zn, and Br were more abundant in the fine fraction. Results showed that particle size plays an important role in the distribution of particulate matter throughout the filter. SiTi-containing particles were mostly deposited near the surface of the filter, and their profiles can be estimated using a polynomial function, whereas the profile of AlCaFe-containing particles can be approached by an exponential decay function. Elements associated with fine fraction aerosols mainly originating from combustion processes, can penetrate up to about 25% of the total filter thickness, and their profiles are better represented by a diffusion function. |
| Address |
|
| Corporate Author |
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Thesis |
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| Publisher |
|
Place of Publication |
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Editor |
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| Language |
|
Wos |
A1989AN60500007 |
Publication Date |
2003-08-06 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0021-8502; 1879-1964 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:116822 |
Serial |
8368 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Injuk, J.; Van Grieken, R.; Laane, R.W. |
| Title |
Dry and wet deposition fluxes of Cd, Cu, Pb, and Zn into the Southern Bight of the North Sea |
Type |
A1 Journal article |
| Year |
1993 |
Publication |
Atmospheric environment: part A : general topics |
Abbreviated Journal |
|
| Volume |
27 |
Issue |
|
Pages |
251-259 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
|
| Address |
|
| Corporate Author |
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Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Wos |
A1993KP20600014 |
Publication Date |
2003-08-06 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0960-1686; 1878-2124 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:6236 |
Serial |
7827 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Injuk, J.; Van Grieken, R.E.; Maenhaut, W. |
| Title |
Atmospheric particulate element concentrations and deposition rates in French Polynesia |
Type |
A3 Journal article |
| Year |
2000 |
Publication |
Journal de recherche océanographique |
Abbreviated Journal |
|
| Volume |
25 |
Issue |
3/4 |
Pages |
74-86 |
| Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Wos |
|
Publication Date |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0397-5347 |
ISBN |
|
Additional Links |
UA library record |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:32610 |
Serial |
7529 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Otten, P.M.; Van Grieken, R.E. |
| Title |
Characterization of airborne particulate matter collected over the North Sea |
Type |
A1 Journal article |
| Year |
1989 |
Publication |
Journal of aerosol science |
Abbreviated Journal |
|
| Volume |
20 |
Issue |
8 |
Pages |
1257-1260 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
|
| Address |
|
| Corporate Author |
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Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Wos |
A1989CN23100101 |
Publication Date |
2003-08-06 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0021-8502; 1879-1964 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:116819 |
Serial |
7616 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Otten, P.M.; Van Grieken, R.E.; Laane, R. |
| Title |
Dry aerosol deposition over the North Sea estimated from aircraft measurements |
Type |
H3 Book chapter |
| Year |
1991 |
Publication |
|
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
419-425
T2 - Air pollution modeling and its applic |
| Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Wos |
|
Publication Date |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Additional Links |
UA library record |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:680 |
Serial |
7826 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Van Grieken, R.; Maenhaut, W. |
| Title |
Elemental composition of aircraft-sampled aerosols above the Southern Bight of the North Sea |
Type |
A1 Journal article |
| Year |
1993 |
Publication |
Water, air and soil pollution |
Abbreviated Journal |
|
| Volume |
71 |
Issue |
|
Pages |
391-404 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
|
| Address |
|
| Corporate Author |
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Thesis |
|
| Publisher |
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Place of Publication |
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Editor |
|
| Language |
|
Wos |
A1993MT74000011 |
Publication Date |
2004-11-15 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0049-6979; 1573-2932 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:6263 |
Serial |
7888 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Van Grieken, R.E. |
| Title |
Electron microprobe characterization of individual aerosol particles collected by aircraft above the Southern Bight of the North Sea |
Type |
A1 Journal article |
| Year |
1992 |
Publication |
Atmospheric environment : an international journal |
Abbreviated Journal |
|
| Volume |
26a |
Issue |
|
Pages |
1231-1237 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Wos |
A1992HM11500002 |
Publication Date |
2003-08-06 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
1352-2310 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:2826 |
Serial |
7870 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Van Grieken, R.E.; Cantillano, M.E. |
| Title |
Study of the Antarctic aerosol using X-ray fluorescence and single particle analysis |
Type |
A3 Journal article |
| Year |
1992 |
Publication |
Scientific series of the Chilean Antarctic Institute (Ser. Cinet. INACH) |
Abbreviated Journal |
|
| Volume |
42 |
Issue |
|
Pages |
37-45 |
| Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
|
| Address |
|
| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
|
Wos |
|
Publication Date |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Additional Links |
UA library record |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:2839 |
Serial |
8604 |
| Permanent link to this record |
| |
|
| |
| Author |
Rojas, C.M.; Van Grieken, R.E.; Laane, R.W. |
| Title |
Comparison of 3 dry deposition models applied to field-measurements in the Southern Bight of the North-Sea |
Type |
A1 Journal article |
| Year |
1993 |
Publication |
Atmospheric environment |
Abbreviated Journal |
|
| Volume |
27 |
Issue |
3 |
Pages |
363-370 |
| Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
Dry deposition velocities have been calculated using three different approaches. Turbulent wind profile theory has been used to predict the drag coefficient, wind speed and friction velocity at 10 m height when the wind speed is measured at a higher altitude. The resulting parameters were introduced in a two-layer deposition model. The second approach was the well-known model of Slinn and Slinn (1980, Atmospheric Environment 14, 1013-1016), whereas the third corresponded to the model published by Williams (1982, Atmospheric Environment 16, 1933 1938). Results point to clear differences. However, in a field experiment carried out at the Southern Bight of the North Sea, all three approaches show relatively comparable results. The role played by the size distribution of atmospheric particulate matter is essential. In our case any of the three models could have given satisfactory outcomes taking into account the wide spread of the experimental results cited in the literature for the same airshed. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Wos |
A1993KQ75200008 |
Publication Date |
2003-08-06 |
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0004-6981 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:100018 |
Serial |
7690 |
| Permanent link to this record |
