【作者】 姜杰； 张慧敏； 杨俊； 刘桂华； 林凯； 黎雪慧；

【Author】 JIANG Jie,ZHANG Hui-min,YANG Jun,et al.(Shenzhen Center for Disease Control and Prevention, Shenzhen 518020,China)

【机构】 Shenzhen Center for Disease Control and Prevention；

【摘要】 目的采用冷原子吸收法测定深圳市场牡蛎的总汞含量,评价普通人群汞暴露的风险。方法采集深圳市场中牡蛎,利用高压密闭消解法对牡蛎样品进行消解,用冷原子吸收法对牡蛎中汞含量进行测定,根据无公害食品水产品有毒有害物质标准限量对牡蛎的食用安全性进行评估。结果方法检出限为0.0018 mg/kg,精密度为5.2%～8.4%之间,回收率在83.3%～106.2%之间,国家标准参考物质的分析结果在证书值范围内。所检牡蛎中总汞含量均低于无公害水产品质量安全标准。结论本法测定牡蛎中汞含量灵敏度高,准确可靠,深圳人群牡蛎中总汞摄入量是安全的。更多还原

【Abstract】 Objective The contents of mercury in oysters from Shenzhen markets were investigated by cold atomic-absorption spectroscopy and the risk of mercury exposure to human was evaluated.Methods The oyster samples were collected from some markets in Shenzhen city,then the contents of mercury in oysters were measured by cold atomic-absorption spectroscopy after samples were digested by HNO₃ in high-pressure closed-vessel,their edible security was measured refer to the standard values of harmless fishery food.Results The detection limit was 0.0018mg/kg,the recoveries were between 83.3%～106.2%, the precision ranged from 5.2%to 8.4%,and the result of analyzing standard material was in the certificate values.The contents of mercury in oysters were below the standard value of harmless fishery.Conclusions The method was sensitive and suitable for determination of total mercury in oysters,the result showed that the total mercuric intakes in Shenzhen people were safe..更多还原