为了解贵州东南部某汞矿区农作物重金属含量及其健康风险，测定了农作物食用部分中 Hg、As、Cu、Zn、Cd 和 Pb 等重金属元素的含量。采用目标危害系数评价了食用该矿区农作物对儿童和成人的健康风险。单一重金属健康风险目标危害系数（THQ）和多种重金属健康风险目标危害系数（TTHQ）分析显示，农作物中 Hg 、As 和 Cd 的潜在健康风险大，Pb 的健康风险较小，Cu和 Zn 没有健康风险；TTHQ 值均大于23，表明该汞矿区农作物具有多种重金属摄入的健康风险；对比儿童和成人摄入农作物的健康风险，儿童受到重金属暴露的风险更大。%To evaluate the heavy metals content and health risks of corps in mercury mine area of southeastern Guizhou Province,Hg,As,Cu,Zn,Cd and Pb content in corps for eating were analyzed. Target Hazard Quotients (THQ)method was use to evaluate the health risk on both children and adults of eating the crops in the area.The single heavy metals health risks THQ and the multiple synthetical heavy metals health risks Target Hazard Quotients (TTHQ)analysis indicated that Hg,As,and Cd has great potential health risks,health risks of Pb is relatively smaller,Cu and Zn has no health risks;TTHQ aver-age value is higher than 23,crops of this mercury mine area has health risks by variety heavy metals. Children are more easily exposed by heavy metals by comparison of consume corps of children and adults.
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