摘要
目的采用氢化物发生-原子荧光光谱法测定生活饮用水中的汞。方法采用2%硝酸溶液作为载流代替原来的5%盐酸溶液,20 g/L的硼氢化钾溶液作为实验的还原剂。结果本方法适用于生活饮用水中汞的测定,回收率90.0%～100.5%,标准曲线r>0.995,检出限为0.033 8μg/L,相对标准偏差为1.24%。结论本方法方便、快速、准确,灵敏度高,能消除实验中的干扰因素,满足日常生活水质的检测要求。
Objective To determine the mercury of drinking water by hydride generation - atomic fluorescence spectrometry. Methods 2% nitric acid solution was used as a carrier instead of the original 5% hydrochloric acid solution; 20 g / L of potassium borohydride solution was a reducing agent for experimental. Results The method was suitable for the determi- nation of mercury in drinking water. The recovery rate was 90. 0% - 100. 5%, the standard curve was above 0. 995, the detection limit was 0. 033 8μg/L, standard deviation was 1.24%. Conclusion The method is convenient, rapid and ac- curate. It can eliminate the interference factors in the experiment and satisfy the detection requirements of the water quality of daily life.
出处
《中国卫生工程学》
CAS
2013年第1期63-64,67,共3页
Chinese Journal of Public Health Engineering
关键词
原子荧光法
生活饮用水
汞
Atomic fluorescence spectrometry
Drinking water
Mercury
