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Environmental Geochemistry and Health

, Volume 28, Issue 1–2, pp 73–78 | Cite as

Assessment of toxicity of heavy metal contaminated soils by the toxicity characteristic leaching procedure

  • Yefang Sun
  • Zhengmiao  Xie
  • Jing Li
  • Jianming Xu
  • Zuliang Chen
  • Ravi Naidu
Article

Abstract

The concentrations of Cu, Zn, Pb and Cd in soils near a lead–zinc mine located in Shangyu, Zhejiang Province, China, were determined and their toxicity was assessed using the toxicity characteristic leaching procedure (TCLP) developed by the United States Environmental Protection Agency. The TCLP method is a currently recognized international method for evaluation of heavy metal pollution in soils. The available levels of Cu, Zn, Pb and Cd were 8.2–36, 23–143, 6.4–1367 and 0.41–2.2 mg kg−1, respectively, while the international standards were 15, 25, 5 and 0.5 mg kg−1, respectively. Soils around the mine were more polluted with Zn and Pb, followed by Cd and Cu. Moreover, the levels of heavy metals in the soils extracted by TCLP indicated that extraction fluid 2 was more effective than extraction fluid 1 in extracting the heavy metals from the polluted soils and there was a positive correlation between fluids 1 and 2. Available heavy metal contents determined by TCLP were correlated with soil total heavy metal contents.

Keywords

heavy metals mine tailings risk assessment soil TCLP toxicity testing 

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Notes

Acknowledgements

This research was financially supported by the Chinese Department of Agriculture and Zhejiang Provincial Ministry of Science and Technology.

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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Yefang Sun
    • 1
  • Zhengmiao  Xie
    • 1
  • Jing Li
    • 1
  • Jianming Xu
    • 1
  • Zuliang Chen
    • 2
  • Ravi Naidu
    • 2
  1. 1.Institute of Soil and Water Resources and Environmental ScienceZhejiang UniversityHangzhouChina
  2. 2.Centre for Environmental Risk Assessment & RemediationUniversity of South AustraliaMawson LakesAustralia

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