Endemic Arsenosis Caused by Indoor Combustion of High-As Coal in Guizhou Province, P.R. China |
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Authors: | Zheng Baoshan Wang Binbin Ding Zhenhua Zhou Daixing Zhou Yunshu Zhou Chen Chen Chaochang Robert B. Finkelman |
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Affiliation: | (1) State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, 550002 Guiyang, Guizhou, P.R.China;(2) Sanitation and Anti-Epidemic Station of Qianxinan Autonomous Prefecture, 562400 Xingyi, Guizhou, P.R.China;(3) U.S. Geological Survey, Reston, VA 22092, USA |
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Abstract: | The arsenic (As) content of coal relating with mineralization of gold in Southwest Guizhou Province, China is up to 35,000 ppm. The coal is burned indoors in open pits for daily cooking and crop drying. As a result, arsenic is precipitated and concentrated in corn (5–20 ppm), chili (100–800 ppm) and other foods. Arsenic concentrations in the drinking water of high-As coal areas are lower than 50 ppb. The estimated main sources of As exposure in this area are from polluted food. Approximately, 3000 arsenosis patients were found by 1998, and more than 100,000 people from six counties were under the threat in China. This paper presents the major ingestion pathway of this type arsenosis and relative geochemistry of high-As coal. The project supported by National Natural Science Foundation of China (NSFC 40133010). |
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Keywords: | arsenosis high-As coal indoor combustion of coal |
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