NDLI: Bioavailability, mobility, and toxicity of Cu in soils around the Dexing Cu mine in China

Content Provider	Springer Nature Link
Author	Guo, Guangyong Yuan, Tao Wang, Wenhua Li, Dan Cheng, Jinping Gao, Yang Zhou, Pei
Copyright Year	2010
Abstract	Total concentration is not a reliable indicator of Cu mobility or its bioavailability in soils. The chemical fraction determines the behavior of Cu in soils and hence its toxicity for terrestrial biota. We used the sequential extraction procedure and barley toxicity tests to examine the transfer of Cu in soils around the Dexing Cu mine and to make an ecological risk assessment of Cu in this area. The bioavailable Cu (exchangeable Cu and carbonate-bound Cu) in each soil profile did not change significantly with soil depth, indicating that the Cu itself was vertically mobile and thus potentially a higher risk to the environment. Cu toxicity and bioaccumulation in plants varied with the soil physicochemical characteristics [e.g., pH, clay content, and cation exchange capacity (CEC)] and the level of bioavailable Cu. Multiple regression analysis revealed that bioavailable Cu and CEC could be used to predict Cu toxicity to barley and that other characteristics (such as soil pH, clay content, or total organic carbon) did not predict the risk of toxicity as well as CEC. For the soil to be suitable for agriculture use, treatment of the local soil contamination with guest soil reclamation and phytoremediation with heavy metal-resistant plants would be necessary.
Starting Page	217
Ending Page	224
Page Count	8
File Format	PDF
ISSN	02694042
Journal	Environmental Geochemistry and Health
Volume Number	33
Issue Number	2
e-ISSN	15732983
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-08-10
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cu Fraction Soil Bioavailability Sequential extraction Mobility Soil Science & Conservation Terrestrial Pollution Environmental Chemistry Geochemistry Environmental Health Public Health/Gesundheitswesen
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Medicine Geochemistry and Petrology Environmental Engineering Water Science and Technology

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