Study of metal fractionation in river sediments.: A comparison between kinetic and sequential extraction procedures

被引：97

作者：

Gismera, MJ

Lacal, J

da Silva, P

García, R

Sevilla, MT

Procopio, JR

机构：

[1] Univ Autonoma Madrid, Dept Analyt Chem & Instrumental Anal, E-28049 Madrid, Spain

[2] Univ Autonoma Madrid, Dept Agr Chem Geol & Geochem, E-28049 Madrid, Spain

来源：

ENVIRONMENTAL POLLUTION | 2004年 / 127卷 / 02期

关键词：

kinetic extraction procedure; metal mobility; heavy metal; sediment;

D O I：

10.1016/j.envpol.2003.08.004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The extraction kinetic of trace metals (Cd, Cu, Pb, and Zn) in river sediments by four extraction agents was studied. As extractants ammonium acetate, acetic acid, hydroxylamine and EDTA solutions were assayed. These reagents can leach the metals more or less selectively from several metal compartments of sediments. The metal leaching kinetic model permits classification of the metal species in labile and moderately-labile ones. The combination of two or more non specific reagents permits a high characterisation of metal distribution and leachability. The results obtained with this model in four river sediments were compared with data obtained by the SM&T sequential extraction procedure, in order to characterise the chemical nature of leached metal. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：175 / 182

页数：8

共 17 条

[1]

[Anonymous], 1984, CRYSTAL STRUCTURES C

[2] SEDIMENT ANALYSIS - LABILITY OF SELECTIVELY EXTRACTED FRACTIONS [J].