Methodological study of extraction procedures applied to urban particulate matter |
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| Authors: | Jirina Sysalova Jirina Szakova Walter Goessler Jana Tremlova |
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| Institution: | 1.Institute of Chemical Technology,AAS Laboratory,Prague 6,Czech Republic;2.Department of Agrochemistry and Plant Nutrition,Czech University of Agriculture,Prague 6,Czech Republic;3.Institute of Chemistry-Analytical Chemistry,Karl-Franzens University,Graz,Austria |
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| Abstract: | The modified BCR three-step sequential extraction procedure has been applied to two different samples of urban particulate
matters (PM). The distribution of selected trace elements As, Cd, Cr, Mn, Ni, Pb, Zn was investigated and, in a comparative
study, the presence of common organic air filters in extraction procedures was evaluated. Analytes in separate fractions were
determined by ICP-OES and GFAAS, respectively, depending on concentration levels. While, due to air filters, a significant
increase of some analytes mobility in individual fractions has been observed in case of the jet-milled PM (tunnel Letna),
but in case of the PKC sample such effect was not found. The analyte impurities built in some filters has been tested, and
the impact on the reliability of analyte results has been discussed. The arsenic species occurrence and their stability in
presence of air filters (size 47 mm) were investigated in both urban PM samples as well, using HPLC-ICP-MS technique. Water
soluble and by three-step BCR procedure extractable arsenic forms are shown in chromatograms |
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