Determination of bioavailable selenium in soils using atomic absorption spectrometry

被引：0
|
作者：
Bajcan, D
Zemberyová, M
Klimek, J
Rúriková, D
机构：
[1] Comenius Univ, Fac Sci, Inst Chem, Bratislava 84215, Slovakia
[2] Comenius Univ, Fac Sci, Dept Analyt Chem, Bratislava 84215, Slovakia
[3] Res Inst Chem Technol, Bratislava 83603, Slovakia
来源：
CHEMICKE LISTY | 2001年 / 95卷 / 10期
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D O I：
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中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Bioavailable Se was determined by AAS after extraction from soil with various extractants. Six extraction agents were tested for the determination of plant-available selenium. The Se extractability from soils decreased in the order: 2 mol.l(-1) HNO3 > 1 mol.l(-1) KH2PO4 > 0.1 mol.l(-1) KH2PO4 + K2HPO4 > 0.1 mol.l(-1) KH2PO4 > 0.05 mol.l(-1) EDTA (pH 7) > 0.43 mol.l(-1) CH3COOH. The 0.1 mol.l(-1) KH2PO4 + K2HPO4 (pH 7) seemed to be the most suitable. The amount of the bioavailable Se in soils was very low (max. 2.5 %) due to acid and neutral pH of the soils.
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页码：638 / 641
页数：4
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