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目的 探讨冷原子荧光法在测定人发汞时的工作条件。方法 发样经洗涤烘干后在管式炉内（750±50）℃燃烧5min,吸收液中的汞被SnCl2还原后于253.7 nm用冷原子荧光法测定。结果 以3g/L SnCl2为还原剂,线性范围0.04-2.0μg/L,r=0.9999,检出限为0.05μg/L,相对标准偏差为2.5％,平均回收率在90.0％～110.0％。结论 冷原子荧光法可用于人发痕量汞的测定。
Objective To investigate the working conditions of cold atomic fluorescence spectrometry in the determination of human hair mercury. Methods The samples were washed and dried in a tube furnace (750 ± 50) ℃ for 5 min. Mercury in the absorbing solution was reduced by SnCl2 and determined by cold atomic fluorescence spectrometry at 253.7 nm. The results showed that the linear range was 0.04-2.0μg / L, the detection limit was 0.05μg / L, the relative standard deviation was 2.5% and the average recovery was 90.0% -110.0% with 3g / L SnCl2 as reducing agent. Conclusion Cold atomic fluorescence spectrometry can be used to determine the trace mercury in human hair.