重庆市水江地区水稻重金属含量特征与健康风险评估
Heavy Metal Content Characteristics and Health Risk Assessment of Rice in Shuijiang Area of Chongqing City
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摘要: 该文以重庆市南部水江地区水稻为研究对象，分析了水稻中As、Hg、Cd、Cr、Cu、Pb和Zn的元素含量，评估了成人和儿童食用当地水稻造成的健康风险。结果表明，As、Hg、Cd、Cr、Cu、Pb和Zn含量的平均值分别为0.13、0.005、0.14、0.11、3.11、0.10和22.99 mg/kg，其中Hg、Cr、Cu和Zn元素无超标样品，As、Pb和Cd元素的超标率分别为8%、8%和32%。由此可知，食用当地水稻，As元素对成人有明显的健康风险，As和Cd元素对儿童有明显的健康风险；成人和儿童的复合重金属健康风险指数分别为4.64和7.25，有显著的健康风险，其中As元素在总健康风险水平中起决定性作用。Abstract: Rice contents in Shuijiang area of southern Chongqing were studied.Contents of As，Hg，Cd，Cr，Cu，Pb and Zn in rice were analyzed，and health risks caused by eating rice in adults and children were evaluated.Results showed that average values of As，Hg，Cd，Cr，Cu，Pb and Zn were 0.13，0.005，0.14，0.11，3.11，0.10 and 22.99 mg/kg，respectively，and Hg，Cr，Cu and Zn elements were not exceeded.Over-standard rates of the As，Pb and Cd elements were 8%，8% and 32%，respectively.Eating local rice，As element had obvious health risks for adults，As and Cd had obvious health risks for children，adult and children′s composite heavy metal health risk index was 4.64 and 7.25，respectively，with significant health risks，of which As element played a decisive role in the overall health risk level.
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