生态学杂志2011，Vol.30Issue(5)：914-921,8.
贵州汞矿区居民食用大米的甲基汞暴露及健康风险评价
Methylmercury exposure through rice consumption and its health risk assessment for the residents in Guizhou mercury mining areas
摘要
Abstract
Rice, vegetable, pork meat, and drinking water were sampled from Guizhou mercury (Hg) mining areas to analyze their total mercury (T-Hg) concentrations. All the samples had higher concentration T-Hg, but only rice accumulated methylmercury ( Me-Hg) . The average intake of Me-Hg through rice consumption by the residents in three villages of Wanshan Hg mining area occupied 97.5％ , 94. 1％ , and 93.5％ of the total Me-Hg intake, respectively, and the Me-Hg intake from rice per resident per day had significant relationship with the Me-Hg level of hair, suggesting that rice consumption was the main route of Me-Hg exposure for the local residents in Guizhou Hg mining areas. The T-Hg concentration in the hairs of artisanal mining workers was significantly higher than that of the common people and control group, and the proportion of Me-Hg to T-Hg in the hairs of the common people and control group was only 12.4％ on average, illustrating the impact of Hg vapor from artisanal mining activities. Comparing with control group, the residents in Guizhou Hg mining areas had a higher Me-Hg concentration in their hairs. The daily Me-Hg intake through rice consumption by parts of the residents in Guizhou Hg mining areas exceeded the JECFA-recommended value (0. 23 μg · d-1 · kg-1) , and that for a majority of the residents exceeded the USEPA-recommended value (0. 10 μg · d-1 · kg-1). The residents in Gouxi and Laowuchang of Tongren areas were at a health risk of Me-Hg exposure through rice consumption, and those in other Hg mining areas were at a potential risk of Me-Hg exposure.关键词
贵州汞矿区/甲基汞/大米/汞暴露/健康风险评价Key words
Guizhou mercury mining area/ methylmercury/ rice/ mercury exposure/ health risk assessment.分类
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李平,冯新斌,仇广乐..贵州汞矿区居民食用大米的甲基汞暴露及健康风险评价[J].生态学杂志,2011,30(5):914-921,8.基金项目
贵州省自然科学基金项目(黔科合J字[2009]2003号)、国家自然科学基金项目(21007068)和国家高技术研究发展计划项目(2008AA06Z335)资助. （黔科合J字[2009]2003号）
