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目的了解青岛市市售食品中铅、镉、汞、砷重金属元素的污染情况。方法对该市区的超市及零售批发农贸市场按照随机原则采集各类食品12种,共计采集319份,测定重金属含量。结果铅、镉、汞、砷的总检出率分别为28.8%、59.2%、91.5%、39.8%。仅有小麦面粉镉超标1份,检出值为0.164 mg/kg,超标0.6倍。其他样品所检项目均符合食品中污染物限值。但水产品、禽畜内脏中铅平均值分别为0.0934和0.0473 mg/kg,镉平均值分别为0.477和0.0550 mg/kg;水产品中总汞和砷平均值分别为0.0114和2.27 mg/kg,皮蛋咸蛋总砷平均值为0.141 mg/kg。结论青岛市食品中铅、镉、汞、砷重金属污染总体较轻。
Objective To understand the pollution of heavy metals of lead, cadmium, mercury and arsenic in Qingdao municipal food. Methods A total of 129 kinds of foods were collected according to the random principle from the supermarkets and retail and wholesale farmer’s markets in the urban area. A total of 319 samples were collected for the determination of heavy metal content. Results The total detection rates of lead, cadmium, mercury and arsenic were 28.8%, 59.2%, 91.5% and 39.8% respectively. Only wheat flour exceeded 1 part of cadmium, the detection value of 0.164 mg / kg, exceeding 0.6 times. Other samples seized items are in line with the contaminant limits in food. However, the average values of lead and cadmium in aquatic products and livestock offspring were 0.0934 and 0.0473 mg / kg, respectively, and the average values of cadmium were 0.477 and 0.0550 mg / kg respectively. The average concentrations of total mercury and arsenic in aquatic products were 0.0114 and 2.27 mg / kg, The average value of total arsenic in egg preserved egg is 0.141 mg / kg. Conclusion The pollution of heavy metals in lead, cadmium, mercury and arsenic in food in Qingdao is generally mild.