Multi-metal contamination of a calcic cambisol by fallout from a lead-recycling plant

被引：76

作者：

Cecchi, M. ^{[1
]}

Dumat, C. ^{[1
]}

Alric, A. ^{[1
]}

Felix-Faure, B. ^{[2
]}

Pradere, P. ^{[3
]}

Guiresse, M. ^{[1
]}

机构：

[1] INP ENSAT UPS, CNRS, Lab EcoLab, UMR 5245, F-31326 Castanet Tolosan, France

[2] Lara Europe Anal 1 Impasse Lisieux, F-31025 Toulouse 3, France

[3] STCM, F-45480 Bazoches Les Gallerandes, France

来源：

GEODERMA | 2008年 / 144卷 / 1-2期

关键词：

trace elements distribution; sequential extraction; soil profile; metal binding minerals; risk assessment;

D O I：

10.1016/j.geoderma.2007.11.023

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

The present study deals with the impact of a lead-recycling plant on metal accumulation in soils, evaluated by a global pedological analysis. This general approach can be used on various contaminated sites to evaluate impact of an anthropogenic activity and inform on metal origin and behavior. A soil profile collected in the vicinity of a lead-recycling plant in operation for 40 years was studied. Correlations between major and trace elements highlighted different patterns of metals according to their origins. Two groups of metals were identified: (j) Pb, Sb, Sn, As, Cu and Zn of anthropogenic origin and (ii) Ni and Cr of natural origin. The results showed that Pb, Sb and Sri presented the highest relative contamination followed by Cu, As and Zn. Moreover, Pb and Sb migrated most along the profile at an estimated rate of 1.5 cm y(-1), followed by Sri, then Zn, Cu and finally As. Sequential extractions showed that all metals were mainly solubilized by reduction and therefore estimated to be bound to iron oxides, except lead which was rather in the acid-soluble fraction in the contaminated horizons. Furthermore, high levels of lead were found in water-soluble and exchangeable fractions (4.2 mg kg(-1)) suggesting the occurrence of lead transfer towards the trophic chain. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：287 / 298

页数：12

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