青岛市蔬菜重金属污染及铅、镉健康风险评价

A Survey of Heavy Metal Contamination in Commercial Vegetables of Qingdao and Lead Health Risks Assessment

蔬菜是人们食用最多的食物之一,蔬菜的质量安全与否直接关系城市居民的身体健康。为评价蔬菜重金属污染状况和蔬菜安全水平,对青岛市的2个重要蔬菜批发市场的24种常见蔬菜分季节进行抽样检测,采用国家食品卫生标准限值计算单项污染指数和综合污染指数评价蔬菜Cd、Pb、Cr、Cu、Zn污染状况,并对青岛市民因摄入含Pb、Cd蔬菜的健康风险进行了分析。结果表明:青岛市冬季蔬菜重金属污染情况较春季蔬菜严重,且以Pb、Cd污染为主;葱蒜类Pb、Cd含量均为最高,且大蒜受到中度污染;健康风险评价表明,青岛市蔬菜中的Pb、Cd含量未对市民的健康产生显著的风险。

Vegetable is one of the largest foods consumed,and their quality directly relates to the physical health of urban residents.In order to evaluate the heavy metal contamination and the safe levels of vegetables,24 kinds of vegetables from two important vegetables wholesale markets of Qingdao were random sampled in different seasons,we measured and analyzed the contents of heavy metal and then evaluated single pollution index and comprehensive pollution index by the method of national food hygienic standard of China,and health risk assessment from intake of vegetables containing Pb and Cd was assessed.The result showed that the heavy metal pollution in winter vegetables in Qingdao was more serious than in spring,and relied mainly on the fact of Cd and Pb.Scallions had the highest concentration of Cd and Pb,and garlic reached the level of moderate pollution;The results of health risk assessment indicated that the Pb and Cd contents of vegetables has not produced the prominent risk to health of citizens in Qingdao.