Heavy metals in rice and garden vegetables and their potential health risks to inhabitants in the vicinity of an industrial zone in Jiangsu, China
Heavy metals in rice and garden vegetables and their potential health risks to inhabitants in the vicinity of an industrial zone in Jiangsu, China
复制标题
水稻和蔬菜中的重金属及其对中国江苏工业区附近居民的潜在健康风险
DOI：
10.1016/s1001-0742(09)60321-1
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发表时间：
2010-01-01
影响因子：
6.9
通讯作者：
Men, Yi
中科院分区：
文献类型：
--
作者：
Cao, Hongbin;Chen, Jianjiang;Men, Yi
由于工业的快速发展，土壤和农产品受到重金属的污染已引起人们的严重关注。在这项研究中，我们调查了重金属（Cu，Zn，Pb，Cr，Hg和Cd）的水稻和菜园蔬菜，以及耕地土壤中的浓度，在苏南农村工业发达地区，中国，并估计潜在的健康风险的金属对居民通过消费当地生产的水稻和菜园蔬菜。根据一项以粮食为基础的膳食消费率调查显示，大米和蔬菜占总食品消费量的64%，超过60%的大米和蔬菜是在当地种植的。水稻中Cr、Cu、Zn、Cd、Hg和Pb的平均含量分别为0.75、2.64、12.00、0.014、0.006和0.054 mg/kg干重;菜园蔬菜中Cr、Cu、Zn、Cd、Hg和Pb的平均含量分别为0.67、1.18、4.34、0.011、0.002和0.058 mg/kg鲜重。除蔬菜中的铬外，其余均低于我国食品中的最大允许浓度。叶菜类蔬菜的重金属含量高于茄科蔬菜。居民从大米和蔬菜中摄入的Cr、Cu、Zn、Cd、Hg和Pb的日平均摄入量分别为5.66、16.90、74.21、0.10、0.04和0.43 μ g/（kg·d）。虽然个别金属的危害商数值均小于1，但将自种水稻和菜园蔬菜摄入的6种金属综合起来，危害指数值接近1。自种水稻和菜园蔬菜中重金属暴露的潜在健康风险需要更多的关注。
Contamination of soil and agricultural products by heavy metals resulting from rapid industrial development has caused major concern. In this study, we investigated heavy metal (Cu, Zn, Pb, Cr, Hg and Cd) concentrations in rice and garden vegetables, as well as in cultivated soils, in a rural-industrial developed region in southern Jiangsu, China, and estimated the potential health risks of metals to the inhabitants via consumption of locally produced rice and garden vegetables. A questionnaire-based survey on dietary consumption rates of foodstuffs showed that rice and vegetables accounted for 64% of total foodstuffs consumed, and over 60% of rice and vegetables were grown in the local region. Average concentrations of Cr, Cu, Zn, Cd, Hg and Pb were 0.75, 2.64, 12.00, 0.014, 0.006 and 0.054 mg/kg dw (dry weight) in rice and were 0.67, 1.18, 4.34, 0.011, 0.002 and 0.058 mg/kg fw (fresh weight) in garden vegetables, respectively. These values were all below the maximum allowable concentration in food in China except for Cr in vegetables. Leafy vegetables had higher metal concentrations than solanaceae vegetables. Average daily intake of Cr, Cu, Zn, Cd, Hg and Pb through the consumption of rice and garden vegetables were 5.66, 16.90, 74.21, 0.10, 0.04 and 0.43 mu g/(kg.day), respectively. Although Hazard Quotient values of individual metals were all lower than 1, when all six metal intakes via self-planted rice and garden vegetables were combined, the Hazard Index value was close to 1. Potential health risks from exposure to heavy metals in self-planted rice and garden vegetables need more attention.