摘要
目的：对饮用水中六价铬的含量进行测定。方法：采用电感耦合等离子体质谱法,样品经离子交换法分离,浓缩。结果：该分析方法的相对标准偏差均＆lt;5%（n=7）,相关系数大于0.9998,线性范围为0.0-100.0 ng/ml,最低检测浓度为0.02 ng/ml,加标回收率在96.2%-107.4%之间。结论：该方法检出限低,线性范围宽,具有良好的准确度和精密度,元素之间的干扰相对少,能适应不同基体的水质。
Objective： To determine Cr（Ⅵ）in drinking water by inductively coupled plasma-mass spectrometry（ICP-MS）.Methods：Cr（Ⅵ） in drinking water was separated and concentrated by ion exchange and determined by ICP-MS.Results：The linear correlative coefficient of this method was more than 0.9998 in range of 0.0～100.0 ng/ml,the RSD（n=7） was less than 5%,the recoveries were in the range of 96.2%～107.4%,and the detection limit was 0.02 ng/ml.Conclusion：This is a feasible method with low detection limit,wide linear range,less interference,good precision and high accuracy.This method can be used for determination of Cr（Ⅵ） in different matrices.
出处
《中国卫生检验杂志》
CAS
2009年第8期1784-1785,共2页
Chinese Journal of Health Laboratory Technology
关键词
电感耦合等离子体质谱
饮用水
六价铬
离子交换
Inductively coupled plasma-mass spectrometry（ICP-MS）
Drinking water
Cr（Ⅵ）
Ion exchange
