铜陵市义安区蔬菜产地镉污染调查与评价

通过在铜陵市义安区5个乡镇点对点采集蔬菜及土壤样品，分析其中镉含量，并运用土壤及农产品综合质量影响指数(IICQ)对蔬菜产地镉污染状况作评价。结果表明，义安区蔬菜产地土壤镉平均值为0.56 mg/kg，高于背景值。32.5%的土壤样品镉质量比高于风险筛选值而低于风险管制值，7.5%的样品镉质量比高于风险管制值，集中在D乡镇。8种蔬菜样品的IICQ范围在0.01～7.34之间，D乡镇的污染程度最严重。蔬菜镉富集系数存在差异性，叶菜类较块茎类对镉的吸收能力更强，蔬菜产地蔬菜样品整体符合安全食用标准。

Investigation and Evaluation of Cadmium Pollution in Vegetable Growing Areas in Yi'an District, Tongling City

The content of cadmium in vegetable and soil samples collected from five villages and towns in Yi''an District, Tongling City was analyzed, the pollution status of cadmium in the vegetable growing area was evaluated by soil and agricultural product comprehensive quality impact index (IICQ). The results showed that the average value of cadmium in soil of vegetable growing area was 0.56 mg/kg, which was higher than the background value. The cadmium mass ratio of 32.5% of soil samples was higher than the risk screening value and lower than the risk control value, and that of 7.5% of soil samples was higher than the risk control value, which concentrated in D township. The IICQ of 8 vegetable samples ranged from 0.01 to 7.34. D township was the most polluted. There were differences in cadmium enrichment coefficients of vegetables. Leaf vegetables had stronger absorption capacity of cadmium than tubers. The whole vegetable samples from the vegetable growing areas met the food safety standards.