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Heavy metal contamination in soils and food crops around Dabaoshan mine: implication for health risk |
作者:庄萍,邹碧,李… 文章来源:Environmental Geochemistry and Health 点击数 更新时间:2010/9/25 16:59:21 文章录入:anny 责任编辑:anny |
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大宝山矿区土壤和农作物重金属污染:健康风险评价Heavy metal contamination in soils and food crops around Dabaoshan mine: implication for health risk AbstractThis study was designed to investigate heavy metal (Cu, Zn, Pb, and Cd) contamination levels of soils, vegetables, and rice grown in the vicinity of the Dabaoshan mine, south China. The concentration of Cu, Zn, Pb, and Cd in paddy soil exceeded the maximum allowable concentrations for Chinese agricultural soil. The heavy metal concentrations (mg kg−1, dry weight basis) in vegetables ranged from 5.0 to 14.3 for Cu, 34.7 to 170 for Zn, 0.90 to 2.23 for Pb, and 0.45 to 4.1 for Cd. The concentrations of Pb and Cd in rice grain exceeded the maximum permissible limits in China. Dietary intake of Pb and Cd through the consumption of rice and certain vegetable exceeded the recommended dietary allowance levels. The status of heavy metal concentrations of food crops grown in the vicinity of Dabaoshan mine and their implications for human health should be further investigated.
Keywords Heavy metals - Human health - Vegetables - Rice - Dabaoshan mine |
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