三亚市果蔬Cd、Pb含量及其评价

Research on the Concentration of Pb-Cd in Vegetable and Fruit in Sanya City and its Evaluation

测定了海南省三亚市74个水果瓜菜种植点土壤和果蔬的Cd、Pb含量。采用国家土壤环境质量标准和国家食品卫生标准计算单项因子指数和综合污染指数,通过内梅罗污染指数标准进行了评价。结果表明,三亚果蔬地土壤Cd、Pb平均含量分别为0.095和36.66mg/kg,整体上为清洁安全无污染水平,极个别监测点出现轻度污染和接近污染现象。果蔬中Cd、Pb平均含量分别为0.021和0.11mg/kg,Cd的超标率为16.22%,均为轻度污染;Pb的超标率为10.81%,各点间差异较大,两个点的果蔬出现重度污染。

The contain of Cd and Pb in soil,vegetable and fruit were measured and analyzed in 74 vegetable fields of Sanya,and then evaluated with the method of single and synthesis pollution index according to the national environmental quality standard for soils and the national food and environment quality standard, The results showed that： in vegetable field the contain of Cd was 0.095 mg/kg and the Pb was 36.66 mg/kg, which accorded with the cleardiness safe and non-pollution,and only a few field was with low-grade pollution.The contain of the heavy metal CA in vegetable.was 0.02 mg/kg,meaning 16.22% over compared with the standard.Pb was 0.11 mg/kg,meaning 10.81% over compared with the standard.