摘要
目的建立氢化物发生—原子吸收光谱法测定尿中锑的方法。方法利用尿样中锑与硼氢化钠反应生成气态锑化氢分子,在火焰加热下,锑化氢分子解离出锑原子,用原子吸收光谱仪测定锑的含量。采用L16(44)正交实验设计方法选择最佳实验条件。结果该法在0～16μg/L范围内,直线回归相关系数测定为0.9998,检测限为0.056μg/L,相对标准偏差为2.94%～7.55%,加标回收率为96.06%～98.75%。结论该方法准确、灵敏、精确度高,而且简单、快速、实用、值得推广。
[ Objective] To establish determination method of urine antimony by hydride generation- atomic absorption spectrometry. [ Methods ] The antimony in urine reacted with sodium bornhydride to generate gas molecules of stibine from which antimony atom was isolated under the flame heating. Atomic absorption spectrometer was applied to measure antimony content. The optimum experimental condition was selected by using L16144 ） orthogonal design method. [ Results] Whitin the comcentration range of 0 - 16 μg/L, The linear regression correlation coefficient was 0. 9998 ,The detection limit was 0.056 μg/L,the relative standard deviation were between 2.94% - 7.55%, the recovery were between 96.06% -98.75%. [ Conclusion] With the characteristics of accurate, sensi- tive and high accuracy as well as simple, rapid and practical, the method is worthy of promotion and application
出处
《职业与健康》
CAS
2009年第17期1804-1806,共3页
Occupation and Health
关键词
原子吸收光谱法
尿锑
氢化物发生
Atomic absorption spectrometry
Urine antimony
Hydride generation
