Baoshan Zheng, Binbin Wang, Zhenhua Ding, Daixing Zhou, Yunshu Zhou, Chen Zhou, Chaochang Chen, Finkelman Robert B
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, 55000 Guiyang, Guizhou, P.R.China.
Environ Geochem Health. 2005 Sep;27(5-6):521-8. doi: 10.1007/s10653-005-8624-x.
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.
中国贵州省西南部与金矿成矿有关的煤中砷（As）含量高达35000 ppm。这种煤在室内露天坑中燃烧用于日常烹饪和作物烘干。结果，砷沉淀并富集在玉米（5 - 20 ppm）、辣椒（100 - 800 ppm）和其他食物中。高砷煤地区饮用水中的砷浓度低于50 ppb。该地区砷暴露的主要来源估计是受污染的食物。到1998年，大约发现了3000例砷中毒患者，中国六个县的10万多人受到威胁。本文介绍了这种类型砷中毒的主要摄入途径以及高砷煤的相关地球化学特征。
