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Potentially harmful elements in rice paddy fields in mercury hot spots in Guizhou, China
Marthe-Lise Søvik;  Thorjørn Larssen;  Rolf D. Vogt;  Grethe Wibetoe;  Xinbin Feng
2011
Source PublicationApplied Geochemistry
Volume26Issue:2Pages:167-173
Abstract

Levels of the chalcophile metals Hg, Pb, Cd, Cu and Zn and the metalloid As in soils from rice paddy fields were assessed in two regions impacted by different industrial activities in Guizhou province, China. The two study areas (Wanshan and Qingzhen) have previously received attention in the international literature due to heavy Hg pollution, though levels of other potentially harmful elements have not previously been reported. The regions were selected as representing two important, but categorically different metal(loid) contaminated areas in China: Wanshan has been a major region for Hg production while Qingzhen is an important region for a large range of various heavy industries based on coal as an energy source.

Within a limited distance of the Hg mine tailings in Wanshan the rice paddy fields are heavily contaminated by Hg (median concentration 25 μg g−1, maximum 119 μg g−1) and moderately contaminated by Zn and Cd (median concentrations of 86 and 0.9 μg g−1, respectively). Zinc and Cd levels correlate well with Hg contamination, which indicates a similar source and mechanism of transport and accumulation. Other studies have concluded that the main sources of Hg contamination in Wanshan are the numerous Hg mine tailings. This is likely as these metals are all geochemically associated with the mineral cinnabar (HgS). The other chalcophile elements (Pb, Cu and As) are nevertheless found at background levels only. In Qingzhen the soils were found to contain elevated levels of As and Hg (median concentrations of 38 and 0.3 μg g−1, respectively). These are elements that are known to be more associated with coal and released during coal combustion.

Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/9484
Collection环境地球化学国家重点实验室
Affiliation1.Norwegian Institute for Water Research, Gaustadalléen 21, 0349 Oslo, Norway
2.Department of Chemistry, University of Oslo, POB 1033, 0315 Oslo, Norway
3.State Key Laboratory of Environmental Geochemistry, Chinese Academy of Sciences, Guiyang 550002, PR China
Recommended Citation
GB/T 7714
Marthe-Lise Søvik;Thorjørn Larssen;Rolf D. Vogt;Grethe Wibetoe;Xinbin Feng. Potentially harmful elements in rice paddy fields in mercury hot spots in Guizhou, China[J]. Applied Geochemistry,2011,26(2):167-173.
APA Marthe-Lise Søvik;Thorjørn Larssen;Rolf D. Vogt;Grethe Wibetoe;Xinbin Feng.(2011).Potentially harmful elements in rice paddy fields in mercury hot spots in Guizhou, China.Applied Geochemistry,26(2),167-173.
MLA Marthe-Lise Søvik;Thorjørn Larssen;Rolf D. Vogt;Grethe Wibetoe;Xinbin Feng."Potentially harmful elements in rice paddy fields in mercury hot spots in Guizhou, China".Applied Geochemistry 26.2(2011):167-173.
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