冷原子吸收法测定深圳市场牡蛎中总汞含量  

Determination of total mercury in oysters from Shenzhen markets by cold atomic-absorption spectroscopy

作　　者：姜杰[1] 张慧敏[1] 杨俊[1] 黎雪慧[1] 丘红梅[1] 林凯[1] 申治国[1] 

机构地区：[1]深圳市疾病预防控制中心理化检验中心,广东深圳518020

出　　处：《中国热带医学》2011年第5期561-562,共2页China Tropical Medicine

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0.0018mg/kg,精密度为5.2%~8.4%,回收率在83.3%~106.2%。所检牡蛎中总汞含量均低于无公害水产品质量安全标准。结论冷原子吸收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。Aim To detect the contents of mercury in oysters from Shenzhen markets by cold atomic-absorption spectroscopy.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 referring 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 criteria of harmless fishery.Conclusions The method was sensitive and suitable for determination of total mercury in oysters.

关 键 词：汞 冷原子吸收 牡蛎 深圳 

分 类 号：R155.55[医药卫生—营养与食品卫生学]