浙江省海水贝类中无机砷测定和安全性分析

目的测定浙江省不同养殖区常见海水贝类中的无机砷含量,分析其安全性。方法采用液相色谱-原子荧光光谱法测定海水贝类中无机砷的含量,按单因子污染指数法评价其安全性。结果在三门湾、乐清湾、沿浦湾、南麂岛、嵊泗列岛5个养殖区采集缢蛏、贻贝、泥蚶、血蚶、牡蛎、文蛤、青蛤等7种海水贝类201个样品,测定无机砷含量范围为0.015~2.7 mg/kg,其中三门湾地区10个缢蛏样品超过安全限量0.5 mg/kg,缢蛏平均污染指数Pi为0.56,其他品种样品无机砷含量全部符合安全限量要求,平均污染指数Pi均小于0.4。结论浙江省海水贝类中无机砷污染指数总体状况属于微污染一轻污染水平,但部分地区缢蛏存在一定生物质量安全隐患,需引起重视。

Determination and safety analysis of inorganic arsenic in marine shellfish in Zhejiang province

Objective To determine the content of inorganic arsenic in common marine shellfish in different breeding areas in Zhejiang province and analyze its safety.Methods The content of inorganic arsenic in marine shellfish was determined by liquid chromatography-atomic fluorescence spectrometry,and its safety was evaluated by single factor pollution index method.Results A total of 201 samples of 7 kinds of marine shellfish,including constrictor clams,mussels,cockles,blood cockles,oysters,clams,and green clams in 5 culture areas in Sanmen Bay,Yueqing Bay,Yanpu Bay,Nanji Island,and Shengsi Islands were collected,and the content range of inorganic arsenic were 0.015-2.7 mg/kg.Among them,10 samples of Sinonovacula constricta in the Sanmen Bay area exceeded the safety limit of 0.5 mg/kg,the average pollution index(Pi)of Sinonvacula constricta was 0.56,the inorganic arsenic content of samples of other varieties all met the safety limit requirements,and the average pollution index Pi was less than 0.4.Conclusion The overall status of the inorganic arsenic pollution index in seawater shellfish in Zhejiang province belongs to the level of micro-pollution-light pollution.However,there are certain hidden dangers in biological quality and safety of Sinonovacula constricta in some areas,which requires attention.