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Sequential and Single Step Extraction Procedures Used for Fractionation of Selenium in Soil Samples
Hagarová, I., Žemberyová, M. and Bajčan, D. Sequential and Single Step Extraction Procedures Used for Fractionation of Selenium in Soil Samples Chemical Papers, Vol.59, No. 2, 2005, 93-98
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n592a93.pdf
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592a93.pdf |
application/pdf |
520.60KB |
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| Author(s) |
Hagarová, I.
Žemberyová, M.
Bajčan, D.
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| Title |
Sequential and Single Step Extraction Procedures Used for Fractionation of Selenium in Soil Samples
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| Journal name |
Chemical Papers
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| Publication date |
2005
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| Year available |
2005
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| Volume number |
59
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| Issue number |
2
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| ISSN |
0366-6352
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| Start page |
93
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| End page |
98
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2005
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| Language |
english
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| Subject |
250000 Chemical Sciences
250400 Analytical Chemistry
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| Abstract/Summary |
The sequential extraction and single step extraction procedures were used to assess potentially bioavailable selenium from Slovak soils. The used sequential extraction allows to differentiate live forms of selenium bound in soils (exchangeable fraction and fraction bound to carbonates, fraction bound to manganese-iron oxides, fraction bound to organic matter, fraction bound to humid compounds, fraction bound to sulfides) and residual fraction. The single step extraction of soil with 0.1 mol dm-3 KH2PO4 + K2HPO4 (pH 7.0; P-buffer) releases different forms of selenium: soluble, adsorbed, ligand-exchangeable, and plant protein-bound. Application of the P-buffer to soils resulted in a low recovery of selenium (3-12 %) when compared to the total selenium content of the respective soils. The total selenium was determined after total decomposition using HNO3 and HF acids. The determination of selenium in the individual fractions and total selenium was performed by now injection hydride generation atomic absorption spectrometry (FI-HGAAS).
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