合肥市场6种淡水鱼体内Cu、Pb和Cd的分布及食用风险

重金属沿食物链传递并最终在人体中富集的事实已经得到越来越多的重视和研究.从合肥市场采集鲢鱼、鲈鱼、鳜鱼、鳊鱼、鲫鱼和草鱼,研究Cu、Pb和Cd在这6种鱼体内的分布和食用风险.结果表明:鲢鱼、鲈鱼、鳜鱼、鳊鱼、鲫鱼和草鱼的肌肉中w(Cu)、w(Pb)和w(Cd)均低于我国NY 5073—2006《无公害食品水产品中有毒有害物质限量》、GB 2762—2005《食品中污染物限量》及澳大利亚国家卫生和医学研究理事会制定的人体消费卫生标准,其总重金属食入健康风险数值也小于国际辐射防护委员会(ICRP)推荐的最大可接受水平5.0×10-5 a-1,说明合肥市场上这6种淡水鱼的肌肉通过食入途径所产生的Cu、Pb和Cd健康风险均在可接受水平. 

Distribution and Consumption Risk Assessment of Cu,Pb and Cd in Six Freshwater Fishes from the Main Market in Hefei

The distribution and consumption risk of Cu,Pb and Cd were investigated in six freshwater fishes-Silver Carp(Hypophthalmichthys molitrix),Bass(Lateolabrax japonicus),Mandarin Fish(Siniperca chuatsi),Bream(Parabramis pekinensis),Crucian Carp(Carassius aumtus) and Grass Carp(Ctenopharyngodon idellus)-from the main market in Hefei.The results showed that concentrations of Cu,Pb and Cd in the muscles of all the fishes were lower than the standard values in the national NY 5073-2006 Limited Quantity of Poisonous and Harmful Contents of the National Pollution-Free Aquatic Products,national standard GB 2762-2005 Limited Quantity of Contaminants in Foods,as well as those established by the Australian National Health and Medical Research Council(ICRP).The total consumption risk of the heavy metals in the six fishes was lower than 5.0×10-5 a-1,as recommended by ICRP.The health risks of Cu,Pb and Cd in the muscles of the six fishes in the main market of Hefei were acceptable for people’s consumption.