Reduction of Cr(VI) by peat and coal humic substances

被引：76

作者：

Zhilin, Denis M. ^{[1
]}

Schmitt-Kopplin, Philippe

Perminova, Irina V.

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119992, Russia

[2] GSF Res Ctr Environm & Hlth, Inst Ecol Chem, D-85764 Neuherberg, Germany

来源：

ENVIRONMENTAL CHEMISTRY LETTERS | 2004年 / 2卷 / 03期

关键词：

humic substances; chromium; redox; capillary zone electrophoresis; remediation;

D O I：

10.1007/s10311-004-0085-4

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reduction of Cr(VI) by humic substances from leonardite and peat was investigated by capillary zone electrophoresis at various pHs. Both humic materials reduced Cr(VI) at pH 5.4, but not at basic pH. The capacity of leonardite humic substances to reduce Cr(VI) was lower than that of peat humic substances. Fe(III) accelerated the reduction of Cr(VI) by peat humic substances, but not by leonardite humic substances. Cr(VI) reduction mechanisms are proposed. The coal humic substances seem more suitable for remediation of Cr(VI)contaminated sites.

引用

页码：141 / 145

页数：5

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