氢化物原子荧光光谱法同时测定生活饮用水中砷和硒

建立了氢化物发生原子荧光光谱法同时测定生活饮用水中砷和硒的方法.测试结果表明砷和硒在质量浓度分别为0.00μg/L~10.00μg/L和0.00μg/L~40.00μg/L范围内呈线性关系,相关系数分别为(砷r=0.9998,硒r=0.9997)。仪器检出限为砷:0.03μg/L硒:0.05μg/L。本方法检出限砷为0.075μg/L;硒为0.125μg/L。水质样品中砷的回收率为92.6%~96.5%,精密度为0.8%~1.4%;硒的回收率为91.2%~97.4%,精密度为1.0%~1.6%。应用本方法测定生活饮用水中的砷和硒方法简便、快速,结果准确可靠,较好地提高了工作效率。

Simulatneous Determination of Arsenic and selenium in Drinking Water Samples by Hydride Generation Atomic Fluorescence Spectrometry

A method for simulatneous determination of Arsenic and selenium in drinking water samples by hydride generation atomic fluorescence spectrometry.As a matter of fact ,the linear range of Arsenic was 0.00μg/L~10.00μg/L and the related coefficient was 0.9998;While the linear range of Selenium was 0.00μg/L~40.00μg/L and the related coefficient was0.9997. Instrument detection limit was 0.03μg/L（arsenic）and 0.05μg/L（selenium）.Detection limits of the method was 0.075μg/L （arsenic）and 0.125μg/L（selenium）. The rate of arsenic recovery was 92.6%~96.5%and the precision in the drinking water was in the range of 0.8%~1.4%.while the rate of selenium recovery was 92.6%~96.5%and the precision in the drinking water was in the range of 1.0%~1.6%.The experimental results shows that the method is applicable .