微波消解-原子荧光法测定化妆品中的汞

Determination of mercury in cosmetics by hydride atomic fluorescence method

目的建立微波消解一原子荧光法测定化妆品中汞的方法。方法化妆品采用微波消解，双道氢化物发生原子荧光法测定样品中的汞。结果汞浓度在0～0．20μg/L范围内与原子荧光强度呈良好的线性关系，相关系数为0．9991，方法检出限为0．0066μg／L，回收率为91．31％-96．77％。结论方法简便、快捷、准确、灵敏度高，应用双道氢化物发生原子荧光法可测定化妆品汞含量。

Objective To establish a method for determining Mercury（Hg） in cosmetics. Methods The cosmetics were dissolved by microwave and Hg in them were determined by double - channel hydride generation - atomic fluorcsceneeee spectrometry. Results The mercury content was linear with the fluorenseenee intensity in the range of 0 - 0. 20 μg/L with correlation coefficient of 0. 9991. The detection limit of this method was 0. 0066 μg/L. Recovery experiment was carried out and recovery was 95 % - 100%. Conclusions The method was simple, rapid, accurate and high sensitive. Hg in thecosmetics can be determined by hydride generation - atomic fluorescence spectrometry.