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目的研究东海水域海产品中的重金属污染及食用安全性状况。方法以来自宁波和舟山市场的110例海产品(含鱼类、软体类和甲壳类3类)为研究对象,依据国家食品卫生标准《食品中污染物限量》(GB 2762—2012)检测铅、砷、镉、汞的含量,并采用生物质量指数进行评价。结果 110份检测样品的总合格率为72.7%;铅、砷、镉、汞的合格率分别为96.4%、95.4%、80.9%、99.1%;采用生物质量指数进行评价,在这3类海产品中,软体类中镉的合格率最低,镉污染指数大多位于污染水平和重度污染水平之间,差异具有统计学意义(P<0.05)。结论铅、砷、镉、汞等重金属在东海水域的海产品中有不同程度的蓄积,特别是软体类海产品中的镉含量超标严重,已经对周边人群的健康形成潜在威胁,应引起高度重视。
Objective To study the status of heavy metal pollution and food safety in seafood in the East China Sea. Methods A total of 110 marine products (including 3 species of fish, molluscs and crustaceans) from Ningbo and Zhoushan markets were selected as research objects. According to the national food hygiene standard “Limit of Contaminants in Food” (GB 2762-2012), lead, Arsenic, cadmium, mercury content, and the use of biomass quality index for evaluation. Results The total qualified rate of 110 samples was 72.7%. The passing rates of lead, arsenic, cadmium and mercury were 96.4%, 95.4%, 80.9% and 99.1% respectively. The biomass quality index was used for evaluation. In the software category, the pass rate of cadmium was the lowest, and the cadmium pollution index was mostly between the pollution level and the severe pollution level, the difference was statistically significant (P <0.05). Conclusions Heavy metals such as lead, arsenic, cadmium and mercury accumulate to varying degrees in the seafood in the East China Sea waters. In particular, the cadmium content in soft seafood is extremely serious, which may pose a potential threat to the health of the surrounding people and should be highly valued .