Geochemistry and genotoxicity of the heavy metals in mine-abandoned areas and wasteland in the Hetai goldfields,Guangdong Province,China |
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| Authors: | Li Miao Yueliang Ma Ruisong Xu Wen Yan |
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| Institution: | (1) Key Laboratory of Marginal Sea Geology, Chinese Academy of Sciences, 510301 Guangzhou, GD, People’s Republic of China;(2) South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301 Guangzhou, GD, People’s Republic of China;(3) Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640 Guangzhou, GD, People’s Republic of China; |
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| Abstract: | The article presents the geochemical and biogeochemical characteristics of heavy metal elements within the soil–plant system
in the Hetai mine-abandoned areas and wasteland, China. The cytogenetic toxic effects of gold mine wastelands environment
on the chromosome and micronucleus were analyzed by genetic methods. The results showed that abundances of Au and Au-associated
heavy metal elements such as Cu, As, Cd, Pb and Hg in soils, plants and the pigments in those abandoned mine areas were much
higher than those in the background region. The cell structures of the plants in the abandoned mine areas were anomalous and
aberrant, and there were many nano-metal particles diffused in the cells. Moreover, the heavy metal elements in those abandoned
mine areas had entered the ultrastructure and caused toxicities to the organism. |
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