电感耦合等离子体质谱法测定海洋贝类中镉、铬、铜和铅  

ICP-MS Determination of Cd,Cr,Cu and Pb in Seashell

作　　者：龚倩[1,2] 金高娃[2] 李小蕾[1,2] 史永富[2] 蔡友琼[2] 顾润润[2] 

机构地区：[1]中国海洋大学食品科学与工程学院,青岛266003 [2]中国水产科学研究院东海水产研究所,上海200090

出　　处：《理化检验（化学分册）》2012年第5期594-596,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：国家科技支撑计划重大项目(2009BADB7B02);中央级公益性科研院所基本科研业务费项目(No.2009M02)

摘　　要：采用微波消解法处理海洋贝类样品,用电感耦合等离子体质谱法测定样品中镉、铬、铜和铅等4种重金属元素的含量。选择111 Cd、53 Cr、63 Cu和208 Pb等待测元素的同位素克服了质谱干扰。4种元素分别在一定的质量浓度范围内呈线性,检出限(3s)在0.005～0.17μg.L-1之间。镉、铬、铜和铅的回收率分别为94.7%,102.1%,101.9%,105.3%;测定值的相对标准偏差(n=7)分别为4.3%,3.8%,1.5%,6.0%。Sample of seashell was pretreated by microwave assisted digestion, and the contents of Cd, Cr, Cu and Ph in sample solution were determined by ICP-MS. The isotopes （i. e. , 111Cd, 53Cr, 63Cu and 208Pb） of the elements determined were selected to overcome the mass spectrometric interferences. Linear relationships of the 4 elements were kept in definite ranges, with detection limits （3s） in the range of 0. 005--0. 17μg·L-1. Values of recovery and RSD＇s （n=7） found were 94. 7% and 4.3% for Cd, 102. 1% and 3.8μ for Cr, 101.9% and 1.5% for Cu, 105. 3% and 6.0% for Ph.

关 键 词：电感耦合等离子体质谱法 微波消解 贝类 镉 铬 铜 铅 

分 类 号：O657.63[理学—分析化学]