高虹镇稻米中重金属污染状况及健康风险评价  

Heavy metal pollution in rice of Gaohong Town with a health risk assessment

作　　者：许佳霖 武帅 梁鹏[1,2] 张进[1,2] 吴胜春[1,2] 

机构地区：[1]浙江农林大学环境与资源学院,浙江杭州311300 [2]浙江农林大学浙江省土壤污染生物修复重点实验室,浙江杭州311300

出　　处：《浙江农林大学学报》2017年第6期983-990,共8页Journal of Zhejiang A&F University

基　　金：浙江省重点科技创新团队资助项目(2013TD12);国家国际科技合作专项(2014DFE90040);国家自然科学基金资助项目(21577130;21677131)

摘　　要：为调查浙江省高虹镇稻米重金属污染状况及其对人体健康的影响,从高虹镇采集了51个本地稻米样品和37个市售外地稻米样品进行分析。采用污染指数法、相关性分析及聚类分析法评价了高虹镇本地和市售稻米中的重金属污染状况和分布特征。依据对当地居民进行的问卷调查结果,采用危险商法和高危指数法评价了稻米中的重金属对当地居民可能造成的风险。结果表明:高虹镇稻米铬、砷和铅的污染比较严重,分别为0.03~13.45mg·kg-1,0.01~1.64 mg·kg-1和0.04~7.84 mg·kg-1,超标比率分别为70.59%,31.37%和27.45%。本地稻米和市售稻米的综合污染指数分别为3.01和1.95,整体上分别处于重度污染和轻度污染的水平。本地稻米和市售稻米的高危指数值分别为3.50和2.18,食用高虹镇本地产稻米对人体潜在的健康风险更大。To assess the heavy metal contamination in rice and human health risks induced by rice consumption in Gaohong Town, Zhejiang Province, 51 local and 37 commercial rice samples were collected and analyzed for heavy metal concentrations. This was followed by a pollution index calculation, correlation analysis, and cluster analysis. In addition, potential health risk through rice consumption was evaluated using a hazard index（IHI）based on the data and questionnaire surveys. Results showed that rice samples were contaminated by Cr, As,and Pb in Gaohong Town with concentration ranges of 0.03-13.45 mg·kg-1 for Cr, 0.01-1.64 mg·kg-1 for As,and 0.04-7.84 mg·kg-1 for Pb. Of the rice samples that exceeded the National Food Safety Standard, 70.59%were Cr, 31.37% were As, and 27.45% were Pb. The comprehensive pollution index of local rice reached 3.01,which implied a moderate pollution level. By comparison, the pollution index of commercial rice from external sources was 1.95, meaning a mild pollution level. The IHIvalue of local rice samples was 3.50, and for market rice samples it was 2.18. Thus, the overall health risk from heavy metals induced through local rice consumption was higher than commercial rice.

关 键 词：环境化学 稻米 重金属 污染指数 健康风险评价 

分 类 号：S181[农业科学—农业基础科学] X820.4[环境科学与工程—环境工程]