Identification of fractions of mercury in water,soil and sediment from a typical Hg mining area in Wanshan,Guizhou province,China |
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| Authors: | Yan Lin Thorjørn Larssen Rolf D Vogt Xinbin Feng |
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| Institution: | 1. Department of Chemistry, University of Oslo, P.O. Box 1033, 0315 Oslo, Norway;2. Norwegian Institute for Water Research, Gaustadalleen 21, 0349 Oslo, Norway;3. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China |
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| Abstract: | Water, sediment and soil in a region with severe Hg contamination resulting from Hg mining and retorting continue to receive anthropogenic Hg loading from discarded tailings and mine waste calcine piles, even after mining has ended. Crucial for potential long-term mobilization and uptake in biota, however, are chemical forms of Hg in the environment. In order to assess potential mobility and bioavailability of Hg in contaminated areas, a refined sequential extraction technique was used for Hg in soil and sediment, allowing identification of the following conceptual Hg fractions: elemental Hg, exchangeable Hg, strongly-bound Hg and organically-bound Hg. |
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