冷原子吸收光谱法测定化妆品中汞
COLD-VAPOUR-AAS DETERMINATION OF MERCURY IN COSMETICS
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摘要: 应用冷原子吸收光谱法测定化妆品中痕量汞,在所选最佳测定条件下,测得方法的检出限为0.1 μg·kg-1,测定下限为0.40 mg·kg-1,取4.0 μg·L-1汞标液作精密度试验,算得相对标准偏差为0.6%,用标准加入法作回收率试验,所得结果在92%~97%之间.Abstract: Cold-vapour-atomic absorption spectrometry was applied to the determination of mercury in cosmetics.Under the optimum conditions of the determination,the detection limit was found to be 0.1 μg·kg-1 and the limit of determination to be 0.40 mg·kg-1.Precision test was made at the concentration level of 4.0 μg·L-1 of Hg and the value of RSD found was 0.6%.Test for recovery was made by the standard addition method,giving results in the range of 92%-97%.