碰撞池ICP-MS测定近海海水中的Cr、As、Se、Cd、Cu、Zn、Hg和Pb  

Determination of Cr,As,Se,Cd,Cu,Zn,Hg and Pb in offing seawater by collision cell inductively coupled plasma mass spectrometry

作　　者：彭荣飞[1] 黄聪[1] 卓召模[1] 侯建荣[1] 

机构地区：[1]广州市疾病预防控制中心,广州510080

出　　处：《中国卫生检验杂志》2008年第12期2529-2531,2542,共4页Chinese Journal of Health Laboratory Technology

基　　金：广东省医学科研课题(A2008571);广州市医学科研课题(2007-YB-122;2007-YB-123)

摘　　要：目的：建立碰撞池ICP-MS测定近海海水中Cr、As、Se、Cd、Cu、Zn、Hg和Pb的分析方法。方法：样品用0.2%HNO3＋0.2 mg/L Au溶液稀释5倍后直接用碰撞池ICP-MS进行分析,用耐高盐接口和内标法消除非质谱干扰,用碰撞池技术消除质谱干扰。结果：方法的检出限为0.005～0.03 ng/m l,精密度为0.5%～2.6%,回收率为96.0%～105%,对3个标准参考物质的分析结果令人满意。结论：可以采用碰撞池ICP-MS测定近海海水中Cr、As、Se、Cd、Cu、Zn、Hg和Pb,方法检出限低,并且简单、快速和准确,适用于实验室日常分析。Objective：To develop a accurate method to determine Cr,As,Se,Cd,Cu,Zn,Hg and Pb in offing seawater by collision cell inductively coupled plasma mass spectrometry.Methods：After dilution by a factor of 5 using 0.2%HNO3＋0.2 mg/L Au,the samples were directly determined by collision cell inductively coupled plasma mass spectrometry which used Xi interface and internal standardization to eliminate non-spectroscopic interference and collision cell technology to eliminate mass spectroscopic interference.Results：The detection limit was 0.005~0.03 ng/ml,the RSD 0.5%~2.6%,recoveries 96.0%~105% and the results of analyzing standard reference materiel were the same as certified value.Conclusion：This method is simple,sensitive and accurat and can be used to determine Cr,As,Se,Cd,Cu,Zn,Hg and Pb in offing seawater.

关 键 词：ICP-MS 海水 碰撞池 元素 

分 类 号：O657.63[理学—分析化学]