共沉淀富集-FAAS测定饮用水中铅和镉的含量
Determination of Lead and Cadmium Content in Potable Water by FAAS with Coprecipitation Concentration
闫月娥1
作者信息
- 1. 攀枝花学院 国家钒钛检测重点实验室 钒钛资源综合利用四川省重点实验室,四川 攀枝花 617000
- 折叠
摘要
本文采用火焰原子吸收光谱法测定饮用水中铅和镉的含量.结果表明,Pb含量在 0～0.020 mg·L-1线性关系良好,相关系数(R2)为 0.999 2,最低检测浓度为 0.004 mg·L-1;Cd含量在 0～0.010 mg·L-1 线性关系良好,相关系数(R2)为 0.999 3,最低检测浓度为 0.002 mg·L-1.两种元素重复测定的相对标准偏差在 7.0%～8.8%,加标回收率在 95.0%～103.8%.该方法操作简便,测定结果稳定,适用于饮用水中铅和镉含量的测定.
Abstract
The content of lead and cadmium in drinking water was determined by flame atomic absorption spectrometry.The results showed that the linear relationship between Pb content in the range of 0～0.020 mg·L-1 was good,the correlation coefficient(R2)was 0.999 2,and the lowest detection concentration was 0.004 mg·L-1.The linear relationship between Cd content in the range of 0～0.010 mg·L-1 was good,the correlation coefficient(R2)was 0.999 3,and the lowest detection concentration was 0.002 mg·L-1.The relative standard deviations of the two elements were 7.0%～8.8%,and the recoveries were 95.0%～103.8%.The method is simple and stable,and is suitable for the determination of lead and cadmium in drinking water.
关键词
共沉淀/饮用水/铅/镉Key words
coprecipitation/potable water/lead/cadmium引用本文复制引用
出版年
2024
NETL
NSTL
万方数据