Li J, Xie Z M, Xu J M, Sun Y F
Institute for Soil and Water Resources and Environmental Science, Zhejiang University, 310029 Hangzhou, China.
Environ Geochem Health. 2006 Feb-Apr;28(1-2):37-44. doi: 10.1007/s10653-005-9009-x.
Concentrations of heavy metals (Pb, Zn, Cd, Cu) were determined in soils and vegetables (chrysanthemum, spinach and four cultivars of Chinese cabbage from the area adjacent to a Pb/Zn mine in Shaoxing, Zhejiang province, China, and compared with the Chinese National Standards for Soil Environmental Quality. The accumulation of heavy metals in cabbage cv. Siyuegreen was investigated at different distances from the center of the mine. The vegetable plantation soils were polluted with Pb, Cd, Cu and Zn, especially by Pb and Cd. The levels of Pb and Cd were 20 and 30 times higher than the permitted standards, indicating that this Pb/Zn mining area is unsuitable for agricultural use. Chinese cabbage, chrysanthemum and spinach had different enrichment coefficients. The enrichment coefficient of Cd from soil to roots of chrysanthemum was >80% and from roots to leaves of cabbage cv. Shanghaigreen was >120%. These vegetables were polluted by heavy metals and could not be regarded as safe for human consumption. Environmental accumulation of heavy metals in the vegetable plantation soils was proportional to heavy metal accumulation in vegetables and both were inversely proportional to the distance from the lead/zinc mine.
对中国浙江省绍兴市某铅锌矿附近地区的土壤和蔬菜（菊花、菠菜以及四个大白菜品种）中的重金属（铅、锌、镉、铜）含量进行了测定，并与中国土壤环境质量国家标准进行了比较。研究了距矿区中心不同距离处，四月慢品种大白菜中重金属的积累情况。蔬菜种植土壤受到铅、镉、铜和锌的污染，尤其是铅和镉。铅和镉的含量分别比允许标准高出20倍和30倍，表明该铅锌矿区不适宜农业使用。大白菜、菊花和菠菜具有不同的富集系数。菊花从土壤到根部的镉富集系数大于80%，上海青品种大白菜从根部到叶片的镉富集系数大于120%。这些蔬菜受到重金属污染，不能视为可供人类安全食用。蔬菜种植土壤中重金属的环境积累与蔬菜中重金属的积累成正比，且二者均与距铅锌矿的距离成反比。
