职业病人尿液中锑的原子荧光光谱测定法

Determination of antimony in urine of occupational patients by atomic fluorescence spectrometry

目的：建立职业病人尿液中锑的原子荧光光谱测定方法。方法：样品采用压力消解法进行处理,使用硫脲-抗坏血酸-碘化钾混合溶液作为预还原剂,研究了尿中锑原子荧光光谱测定方法的最佳测定条件。结果：本法选择20 g/LKBH4溶液作为还原剂,50 g/L硫脲-50 g/L抗坏血酸-50 g/L碘化钾混合溶液作为预还原剂,线性范围为0～10μg/L,相关系数r≥0.9999,锑检出限分别为0.027μg/L,加标回收率为94.7%,锑的相对标准偏差为1.69%。结论：该方法简便快速、灵敏度高、准确度好,适合尿液中锑的测定。

Objective：A robust, accurate and sensitive analytical procedure was developed for the determination of trace antimony in urine of occupational patients by hydride generation atomic fluorescence spectrometry （HG- AFS）. Methods： A method had been described for the determination of stibium （Sb） in the best condition in urine by hydride generation - atomic fluorescence spectrometry. Results：Reducer was 20 g/L KBH4. r was 0. 9999 in the range of 0 ～ 10 μg/L The detection limit was 0. 27μg/L, recovery 94. 7 and RSD 1.69. Conclusion：Using this method to determine Sb in urines is simple, reliable and accurate.