原子荧光法测定生活饮用水中的砷

Atomic Fluorescence Spectrometry in the Determination of Arsenic in Drinking Water

摘要:
目的采用氢化物发生-原子荧光光谱法测定饮用水中的砷含量。
方法在5%硝酸介质中，加入硫脲-抗坏血酸混合试剂，以NaBH₄20 g/L溶液为还原剂，测定砷荧光强度。
结果在最佳实验条件下，测定生活饮用水中的砷含量，回收率砷为90.5% ~ 93.1%。
结论此方法简便，快速，准确。

Abstract:
Objectives To determine the content of arsenic in drinking water with hydride generation atomic fluorescence spectrometric method.
Methods Thiourea and L-ascorbic acid were added to the medium of 5% HNO₃, and 20% NaBH₄ was used as a reducer to determine the strength of fluorescence.
Results Under the best conditions of experimentation, the recovery rate of the method was 90.5% ~ 93.1% for arsenic.
Conclusion This method is simple, fast and accurate.