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
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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.