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目的建立原子荧光光谱法同时测定化妆品中的砷和汞的方法。方法采用微波消解预处理样品和原子荧光光谱法同时测定化妆品中的砷和汞的含量。结果检出限:砷0.073ug/L,汞0.012ug/L。线性范围:砷0~32ug/L,相关系数为0.9999。汞0~3.2ug/L,相关系数为0.9996。砷、汞相对标准偏差分别为2.01%~1.28%、3.27%~1.44%。回收率分别为96.4%、94.9%。结论微波消解-双道原子荧光光谱法同时测定化妆品中的砷和汞具有操作简便、快速、检出限低、灵敏度高、结果准确等优点,适合于化妆品中砷和汞的同时测定。
Objective To establish a method for simultaneous determination of arsenic and mercury in cosmetics by atomic fluorescence spectrometry. Methods Simultaneous determination of arsenic and mercury in cosmetics by microwave digestion pretreatment and atomic fluorescence spectrometry. Results The detection limit: arsenic 0.073ug / L, mercury 0.012ug / L. Linear range: arsenic 0 ~ 32ug / L, the correlation coefficient of 0.9999. Mercury 0 ~ 3.2ug / L, the correlation coefficient of 0.9996. The relative standard deviations of arsenic and mercury were 2.01% -1.28% and 3.27% -1.44%, respectively. The recoveries were 96.4% and 94.9% respectively. Conclusion The simultaneous determination of arsenic and mercury in cosmetics by microwave digestion-dual-channel atomic fluorescence spectrometry is simple, rapid, low detection limit, high sensitivity and accurate. It is suitable for the simultaneous determination of arsenic and mercury in cosmetics.