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Van Grieken, R.; Injuk, J.; Otten, P.; Rojas, C.; van Malderen, H.; Laane, R. |
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Title |
Fluxes and sources of heavy metal inputs into the Southern Bight of the North Sea |
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H3 Book chapter |
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Year |
1992 |
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184-193
T2 - Industrial air pollution: assessment |
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H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Call Number |
UA @ admin @ c:irua:2859 |
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7975 |
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Author ![sorted by Author field, descending order (down)](img/sort_desc.gif) |
Rojas, C.M.; Van Grieken, R.E.; Laane, R.W. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Comparison of 3 dry deposition models applied to field-measurements in the Southern Bight of the North-Sea |
Type |
A1 Journal article |
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Year |
1993 |
Publication |
Atmospheric environment |
Abbreviated Journal |
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Volume |
27 |
Issue |
3 |
Pages |
363-370 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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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. |
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A1993KQ75200008 |
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2003-08-06 |
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0004-6981 |
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Call Number |
UA @ admin @ c:irua:100018 |
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7690 |
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Author ![sorted by Author field, descending order (down)](img/sort_desc.gif) |
Rojas, C.M.; Otten, P.M.; Van Grieken, R.E.; Laane, R. |
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Title |
Dry aerosol deposition over the North Sea estimated from aircraft measurements |
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H3 Book chapter |
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Year |
1991 |
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419-425
T2 - Air pollution modeling and its applic |
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H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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UA @ admin @ c:irua:680 |
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7826 |
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Author ![sorted by Author field, descending order (down)](img/sort_desc.gif) |
Rojas, C.M.; Injuk, J.; Van Grieken, R.; Laane, R.W. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Dry and wet deposition fluxes of Cd, Cu, Pb, and Zn into the Southern Bight of the North Sea |
Type |
A1 Journal article |
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Year |
1993 |
Publication |
Atmospheric environment: part A : general topics |
Abbreviated Journal |
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27 |
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251-259 |
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A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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A1993KP20600014 |
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2003-08-06 |
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0960-1686; 1878-2124 |
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UA @ admin @ c:irua:6236 |
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7827 |
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Author ![sorted by Author field, descending order (down)](img/sort_desc.gif) |
Injuk, J.; Otten, P.; Laane, R.; Maenhaut, W.; Van Grieken, R. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Atmospheric concentrations and size distributions of aircraft-sampled Cd, Cu, Pb and Zn over the Southern Bight of the North Sea |
Type |
A1 Journal article |
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Year |
1992 |
Publication |
Atmospheric environment : an international journal |
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26a |
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2499-2508 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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A1992JN29900003 |
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2003-08-06 |
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1352-2310 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:2837 |
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7520 |
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Author ![sorted by Author field, descending order (down)](img/sort_desc.gif) |
Hoornaert, S.; Treiger, B.; Van Grieken, R.; Laane, R. |
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Title |
Trend analysis of the published concentrations of heavy metals in aerosols above the North Sea and the English Channel for the period 1971-1994 |
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A1 Journal article |
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1999 |
Publication |
Environmental reviews |
Abbreviated Journal |
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7 |
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191-202 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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1181-8700 |
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Call Number |
UA @ admin @ c:irua:27590 |
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8700 |
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Author ![sorted by Author field, descending order (down)](img/sort_desc.gif) |
de Maeyer-Worobiec, A.; Dekov, V.M.; Laane, R.W.P.M.; Van Grieken, R. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
EPXMA survey of shelf sediments (Southern Bight, North Sea): a glance beyond the XRD-invisible |
Type |
A1 Journal article |
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2009 |
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Microchemical journal |
Abbreviated Journal |
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91 |
Issue |
1 |
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21-31 |
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Keywords |
A1 Journal article; Laboratory Experimental Medicine and Pediatrics (LEMP); AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Shelf sediments of the southern North Sea, were studied with a microanalytical [electron probe X-ray microanalysis (EPXMA)] and two bulk [X-ray diffraction (XRD) and X-ray fluorescence (XRF)] techniques. The investigation proved that the promptness of the microanalytical method is combined with a reasonable analytical reliability. XRD studies of such a type of sediments with monotonous mineral composition are not able to provide mineralogical information beyond the main well-crystalline minerals and the mineralogical quantitative characteristic of the sediment based on XRD estimations are incorrect. The EPXMA mineralogical interpretations are based on the statistical evaluation of a huge data set (thousands of mineral particles) and provide a rather correct quantitative determination of the main minerals. The comparative EPXMAXRF study revealed that the Al, Si, K, Ca, Fe and to some extent Ti contents estimated by EPXMA are fairly reliable. In this respect the accuracy of the EPXMA-based mineral identification of the pure silicates, pure aluminosilicates, and Al-, Ca-, Fe- and Ti-containing minerals with simple composition is very high. Mg-calcite, augite and apatite determinations are assessed to be correct. The supposed accuracy of the clay mineral determinations is slightly lower (7080%) than that of the other main minerals due to the complex and varying composition of the clays. The identification of XRD-invisible accessory minerals and quantification of their presence in the sediments is an essential advantage of the EPXMA, which makes it a useful approach in tracing the origin of the sediments, the pathways of their transport and the geochemical processes they have undergone. However, the EPXMA has several flaws, which need to be solved in the future sediment investigations: (1) calibration with natural standards is needed in order to provide a higher accuracy of the mineral determinations; (2) any EPXMA study of sediments needs to be secured with XRF examinations of selected samples since EPXMA gives only semi-quantitative information about the abundance of the elements; (3) ultra-thin window EPXMA of low-Z elements has to be used since some of them (O, C) are always present in the main sediment components: silicates, aluminosilicates, carbonates and metal oxyhydroxides; (4) the interpretations of the clay fraction have to be supported with detailed XRD investigations of selected samples, while the mineralogy of the silt and sand fractions needs to be backed up with optical microscopy studies. The information from different analytical techniques (EPXMA with XRFXRD-optical microscopy of selected samples) combined with the knowledge about the most possible minerals in a given environment, would give the most reliable results in studying mineralogical composition of shelf sediments. |
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000262963300006 |
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2008-07-14 |
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0026-265x; 0026-265x |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:71604 |
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7933 |
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