微波消解-ICP-MS测定鱼肉中的铊  

Determination of thallium in fish by microwave-digestion-ICP-MS

作　　者：李敏[1] 梁春穗[1] 连晓文[1] 王晶[1] 姚敬[1] 

机构地区：[1]广东省疾病预防控制中心,广东广州510300

出　　处：《中国食品卫生杂志》2012年第4期336-338,共3页Chinese Journal of Food Hygiene

摘　　要：目的建立用微波消解-电感耦合等离子体质谱(ICP-MS)快速、准确测定鱼肉中铊的方法。方法优化微波消解前处理手段,采用ICP-MS测定样品中铊的含量。结果本方法在0.5～10μg/L范围内线性良好,相关系数(r)=0.999 9,检出限为0.2μg/kg,相对标准偏差(RSD)<10%,加标回收率为80%～99%。结论用微波消解-ICP-MS测定铊是一种灵敏准确、方便快速的检测方法。Objective To establish a rapid and accurate determination method for detecting thallium in fish.Methods Thallium was determined by optimal microwave-digestion-ICP-MS.Results The linear range of this method was 0.5-10 μg/L（r=0.9999）,detection limit was 0.2 μg/kg,relative standard deviation（RSD） was under 10%,recovery rate was 80%-99%.Conclusion The method of microwave-digestion-ICP-MS was sensitive,accurate,convenient and rapid for determination of thallium.

关 键 词：ICP-MS 铊 鱼 微波消解 食品安全 

分 类 号：O657.31[理学—分析化学] TS254.7[理学—化学]