ICP–MS法测定食品接触纸制品中铬、镍、砷、镉、铅、汞  

Determination of Cr, Ni, As, Cd, Pb, Hg in food contact paper products by inductively coupled plasma mass spectrometry

作　　者：李延升[1] 祁珍祯 张媛媛[1] 高岩[1] LI Yansheng;QI Zhenzhen;ZHANG Yuanyuan;GAO Yan(Liaoning Provincial Center for Disease Control and Prevention,Shenyang 110005,China)

机构地区：[1]辽宁省疾病预防控制中心,沈阳110005

出　　处：《化学分析计量》2018年第2期56-59,共4页Chemical Analysis And Meterage

摘　　要：建立电感耦合等离子体质谱法(ICP–MS)测定食品接触纸制品中铬、镍、砷、镉、铅、汞6种重金属含量的方法。样品经微波消解处理后用ICP–MS进行测定,内标法定量。在优化实验条件下,测定汞元素的线性范围在0~10μg/L之间,测定铅、镉、铬、镍、砷元素的线性范围在0~100μg/L之间,相关系数均大于0.999。各元素的检出限为0.001~0.1 mg/kg,加标回收率为89.3%~116.0%,测定结果的相对标准偏差为3.5%~7.9%(n=6)。该方法样品处理简单,检测灵敏度高,适用于食品接触纸制品中铬、镍、砷、镉、铅、汞的检测。The method for determining Cr,Ni,As,Cd,Pb,Hg in food contact paper products by inductively coupled plasma mass spectrometry(ICP-MS)was established.After being treated by microwave digestion method,the contents of Cr,Ni,As,Cd,Pb,Hg in samples were determined by ICP-MS,internal standard method was used.The linear range of detection was 0-10μg/L for Hg,and 0-100μg/L for Pb,Cd,Cr,Ni,As,and the correlation coefficients were more than 0.999.The detection limits were in the range of 0.001-0.1 mg/kg.The recovery rates of six elements ranged from 89.3%to 116.0%,and the relative standard deviations of detection results were 3.5%-7.9%(n=6).The method is simple in sample pretreatment,accurate and sensitive,it is suitable for the determination of Cr,Ni,As,Cd,Pb,Hg in food contact paper products.

关 键 词：电感耦合等离子体质谱法 微波消解 食品接触纸制品 铬 镍 砷 镉 铅 汞 

分 类 号：O657.3[理学—分析化学]