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Author |
Vanderborght, B.M.; Van Grieken, R.E. |
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Title |
Trace metal analysis of water containing humic substances by X-ray fluorescence |
Type |
A1 Journal article |
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Year  |
1978 |
Publication |
International journal of environmental analytical chemistry |
Abbreviated Journal |
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Volume |
5 |
Issue |
3 |
Pages |
221-237 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Chelation by oxine followed by adsorption on activated carbon results in the efficient collection of many trace metal ions, independent of the trace metal concentration and of high alkali and alkaline earth ion abundances. Preconcentration factors around 10000 are often achieved. When this preconcentration procedure is combined with energy-dispersive X-ray fluorescence, accurate and precise analysis can be carried out, as was proven in several experiments. The technique can also be applied for the determination of divalent ions in natural waters containing up to 10 ppm of humic substances. Trivalent ions can quantitatively be collected from natural water provided suKicient activated carbon is added. Omitting the oxine chelation prior to the activated carbon adsorption step still results in collection of a sometimes important fraction of the trace metal ions from natural waters. This is related to organically bound or colloidal forms of the trace metals. |
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Wos |
A1978FR88000005 |
Publication Date |
2007-07-07 |
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ISSN |
0306-7319 |
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UA library record; WoS full record; WoS citing articles |
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no |
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Call Number |
UA @ admin @ c:irua:116570 |
Serial |
8692 |
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Author |
Van Grieken, R.E.; Bresseleers, C.M.; Vanderborght, B.M. |
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Title |
Chelex-100 ion-exchange filter membranes for preconcentration in x-ray-fluorescence analysis of water |
Type |
A1 Journal article |
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Year |
1977 |
Publication |
Analytical chemistry |
Abbreviated Journal |
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Volume |
49 |
Issue |
9 |
Pages |
1326-1331 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1977DP25600011 |
Publication Date |
2005-03-08 |
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Edition |
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ISSN |
0003-2700; 5206-882x |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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no |
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Call Number |
UA @ admin @ c:irua:113632 |
Serial |
7639 |
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Author |
Vanderborght, B.M.; Van Grieken, R.E. |
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Title |
Enrichment of trace metals in water by adsorption on activated carbon |
Type |
A1 Journal article |
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Year |
1977 |
Publication |
Analytical chemistry |
Abbreviated Journal |
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Volume |
49 |
Issue |
2 |
Pages |
311-316 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISSN |
0003-2700; 5206-882x |
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UA library record |
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Call Number |
UA @ admin @ c:irua:116513 |
Serial |
7923 |
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Author |
Adams, F.C.; Van Grieken, R.E. |
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Title |
Absorption correction for X-ray-fluorescence analysis of aerosol loaded filters |
Type |
A1 Journal article |
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Year |
1975 |
Publication |
Analytical chemistry |
Abbreviated Journal |
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Volume |
47 |
Issue |
11 |
Pages |
1767-1773 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1975AN45700013 |
Publication Date |
2005-03-08 |
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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 |
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no |
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Call Number |
UA @ admin @ c:irua:113639 |
Serial |
7408 |
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Author |
Johansson, T.B.; Van Grieken, R.E.; Nelson, J.W.; Winchester, J.W. |
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Title |
Elemental trace analysis of small samples by proton-induced X-ray-emission |
Type |
A1 Journal article |
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Year |
1975 |
Publication |
Analytical chemistry |
Abbreviated Journal |
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Volume |
47 |
Issue |
6 |
Pages |
855-860 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1975AA02900016 |
Publication Date |
2005-03-08 |
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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 |
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Notes |
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no |
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Call Number |
UA @ admin @ c:irua:113638 |
Serial |
7895 |
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Author |
Van Grieken, R.; Speecke, A.; Hoste, J. |
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Title |
Geometry errors in 14 MeV neutron activation analysis |
Type |
A3 Journal article |
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Year |
1973 |
Publication |
Journal of radioanalytical chemistry |
Abbreviated Journal |
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Volume |
13 |
Issue |
1 |
Pages |
225-233 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The effects of inaccurate sample sizes and sample positioning on 14 MeV neutron activation analysis results are estimated for 30, 20 and 10 mm diameter targets. It appears that axial positioning is the most critical parameter and that using a larger tritium target will yield an overall improvement of the reproducibility. |
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Publication Date |
2006-10-11 |
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ISSN |
0134-0719; 2064-2857 |
ISBN |
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Additional Links |
UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:116453 |
Serial |
7999 |
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Author |
Van Grieken, R.; Speecke, A.; Hoste, J. |
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Title |
Spatial neutron flux distributions around A 14 MeV neutron generator |
Type |
A3 Journal article |
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Year |
1972 |
Publication |
Journal of radioanalytical chemistry |
Abbreviated Journal |
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Volume |
10 |
Issue |
1 |
Pages |
95-104 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The neutron flux distribution in the vicinity of 30, 20 and 10 mm diameter targets is measured by irradiating concentric ring-type iron monitors at different distances from the target and counting the induced56Mn activity. Considering the many uncertainties, satisfactory agreement was found between theory and experiment. |
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Publication Date |
2006-11-07 |
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ISSN |
0134-0719; 2064-2857 |
ISBN |
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Additional Links |
UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:116452 |
Serial |
8567 |
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Author |
Van Schandevijl, R.; Van Grieken, R.; Hoste, J. |
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Title |
The half-life of 28Al |
Type |
A3 Journal article |
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Year |
1971 |
Publication |
Journal of radioanalytical chemistry |
Abbreviated Journal |
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Volume |
9 |
Issue |
1 |
Pages |
55-60 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The half-life of28Al was redetermined on aluminium samples of different origin. Three different counting techniques were applied. The availability of highly purified samples (up to 99.9999%), the use of very fast electronic counting equipment and a complete automatisation allowed a good precision to be obtained in the final result of 2.2405 min. |
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Publication Date |
2006-10-11 |
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Abbreviated Series Title |
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Series Issue |
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ISSN |
0134-0719; 2064-2857 |
ISBN |
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Additional Links |
UA library record |
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Open Access |
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no |
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Call Number |
UA @ admin @ c:irua:116451 |
Serial |
8016 |
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Author |
Van Grieken, R.; Speecke, A.; Hoste, J. |
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Title |
Simultaneous determination of silicon and phosphorus in cast iron by 14 MeV neutron activation analysis |
Type |
A3 Journal article |
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Year |
1970 |
Publication |
Journal of radioanalytical chemistry |
Abbreviated Journal |
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Volume |
6 |
Issue |
2 |
Pages |
385-398 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
A fast (10 min), non-destructive simultaneous determination of silicon and phosphorus in cast iron and steel by 14 MeV neutron activation was developed. The 1.78 MeV28Al activity (T=2.24 min) induced by the reaction28Si(n, p)28Al is counted on a NaI(Tl) detector. Two measurements are made to correct for the 1.81 MeV56Mn activity (T=2.58 hr) from the iron matrix. However,28Al is also produced via31P(n, α)28Al. By (n, 2n) reaction, phosphorus yields also30P (T=2.6 min), the 0.511 MeV annihilation radiation of which is counted by two opposite NaI(Tl) detectors in coincidence. Again, two successive coincidence measurements are carried out in order to take into account the53Fe activity (β+; T=8.9 min) from54Fe(n, 2n)53Fe. The28Al measurement is appropriately corrected via the computed phosphorus content. An oxygen flux monitor was used to normalize to the same flux. Nuclear interferences have been examined. Special attention has been paid to the presence of copper. The standard deviation for phosphorus being as high as ca. 0.09% P for a single determination, this technique can only be practical as an independent phosphorus analysis for high phosphorus cast irons. The precision on the28Al measurement is 5% relative for 0.2% Si and 2.5% above 1% Si. |
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Publication Date |
2006-10-11 |
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ISSN |
0134-0719; 2064-2857 |
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Additional Links |
UA library record |
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Call Number |
UA @ admin @ c:irua:116450 |
Serial |
8528 |
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