中文摘要：

通过采集蔬菜和对应土壤样品进行室内分析测试,研究了芜湖市三山区蔬菜和土壤中重金属的含量分布、富集特征及其经食入途径对人体的健康风险评估。结果表明,与食品中污染物限量值相比较,蔬菜中As、Zn、Cu、Pb和Cr含量均未超标。不同品种蔬菜中重金属含量不同,花菜和青菜中As、Zn、Pb、Cr、Fe、Ni、Co和Mn的含量相对于其他蔬菜中的同种重金属含量要高。除Cu、Cr外,其他重金属在根茎类蔬菜中的含量最低,除Pb外,其他重金属在花果类中的含量最高。各元素平均富集系数大小为：Zn〉Cu〉Mn〉Cr〉Ni〉Pb〉As〉Co〉Fe。叶菜类对As、Pb的富集系数最大,花果类对其他重金属的富集明显。三山区蔬菜对重金属的富集系数总体偏低,主要是受土壤pH值偏高、周围良好的大气环境质量的影响。三山区蔬菜中重金属所致的健康风险主要来自化学致癌物Cr,而花果类蔬菜中Cr含量最高,因此该区应加强土壤Cr的防治,居民应减少花果类蔬菜的种植和摄入,保障其饮食安全。

英文摘要：

Vegetables and corresponding soils were collected from Sanshan district in Wuhu City,China.Concentrations,accumulation fea-tures and health risk assessment of heavy metals were analyzed.Results showed that：In addition to Cr,Ni,other heavy metals concentration especially for As of soil in Sanshan district exceeded the soil background values,but heavy metals concentration in soil in Sanshan district were lower than those reported for other regions.Concentrations of As,Zn,Cu,Pb and Cr in the vegetables were not exceeded,compared to the value of the limited food contaminants.Different type vegetables had different metal concentration,As,Zn,Pb,Cr,Fe,Ni,Co and Mn con-centration in cauliflower and cabbage were higher than those in other vegetables.In addition to Cu,Cr,other heavy metals in root vegetable had the lowest concentrations,in addition to Pb,other heavy metals concentration in the flowers and fruits were the highest.The order of veg-etables enrichment factors of heavy metals from soil refered as to ZnCuMnCrNiPbAsCoFe.Enrichment factor of Pb and As were the largest in leaf pairs,and enrichment factor of other heavy metals were the largest in flowers and fruits.Vegetables enrichment capacity of heavy metals from alkaline soil was low.Human health risks from heavy metals in vegetables in Sanshan district were mainly caused by chemical carcinogens Cr.In particular,Cr concentration was high in flowers and fruits vegetable,so we should strengthen prevention and control of soil Cr in this area,and local residents should reduce planting flowers and fruits vegetable and intake them,then to ensure their food security.