【摘要】 采用HG-AFS法对工业硫酸中的砷含量的测定方法进行了研究,对优化HG-AFS法的测定条件进行了探讨。本方法检出限为0.022μg/L,试样的加标回收率范围为92.2%～106.3%。测定过程中体系的酸度对测定结果有一定的影响,砷的荧光强度随着酸度的增加而增大,当体系酸度在5%左右时,测定结果相对稳定。结果表明,本实验方法具有检出限低、精密度和准确度高、操作简捷等特点。更多还原

【Abstract】 The Hydride generation-atomic fluorescence spectrometry for determination of arsenic content in industrial sulphuric acid was studied and the optimization of determination conditions was discussed.The detection limit of this method was 0.022 μg/L and the recovery of spiked samples ranged from 92.2% to 106.3%.The acidity of the system during the measurement had some influence on the determination results.The arsenic fluorescence intensity increased with acidity.When the system acidity was at about 5%,the determination results were relatively stable.The results showed that the method had some advantages including low detection limit,high precision and accuracy,simple operation,etc.更多还原