水中砷和铁的反应池-电感耦合等离子体质谱测定法的改进  

Improvement of method for determination of arsenic and ferrum in water by inductively coupled plasma mass spectrometry using DRC system

作　　者：刘柳[1] 张岚 王慧彬[1] 赵霞[1] 李书明[1] 

机构地区：[1]北京市朝阳区疾病预防控制中心理化检验科,北京100021 [2]中国疾病预防控制中心环境与健康相关产品安全所

出　　处：《环境与健康杂志》2014年第5期448-450,共3页Journal of Environment and Health

摘　　要：目的建立水中砷和铁反应池-电感耦合等离子体（ICP）-质谱（MS）直接测定法。方法样品直接进行ICP—MS引入分析，采用在线内标法及反应池技术校正干扰。结果该方法能有效消除质谱干扰及非质谱干扰。10μg／L时As背景等价浓度为0．041μg／L，Fe为1．893μg，L，RSD〈3．0％，As和Fe回收率分别为98．6％～103．0％、101．1％-104．5％。结论该方法简便、快速、准确，完全能够满足水中砷、铁的检测要求。Objective： To establish a method for the determination of arsenic and ferrum in water by DRC-ICP-MS system. Methods The samples were directly determined by ICP-MS which used internal standardization and DRC system to eliminate disturbance. Results The method could eliminate mass spectrum interferences and non-mass spectrum interferences. The BEC was 0.041 μg/L for arsenic, and 1.893 μg/L for ferrum, relative standard deviation （RSD%） 〈3%. The recovery range of arsenic was between 98.6%-103.0%, as for ferrum was between 101.1%-104.5%. Conclusion The method was simple, rapid, accurate and completely meet the requirements of the determination of arsenic and ferrum in water.

关 键 词：电感耦合等离子体质谱 水 铁 砷 

分 类 号：O657.6[理学—分析化学]