原子吸收分光光度法测定化妆品中锶

Study of Detection of Sr in Cosmetics by Atomic Absorption Spectroscopy

目的 建立化妆品中锶的测定方法。结果 锶的测定范围 :0～ 2 0mg/L ,检出浓度 :0 .10mg/kg ,定量下限 0 .4 0mg/kg ,相对标准偏差 <5 % ,回收率 94 %～ 10 5 %。结论 适用于化妆品中锶的测定。

Objective to establish a detection method of Sr in cosmetics. Methods flame atomic absorption spectroscopy was used Results detection scope was 0～0.2mg/L, detection concentration was 0.1mg/kg, lower limit of quantitative determination was 0.40mg/kg, Bias of relative standard was less than 5%, retrieve rate was 94%～105%. Conclusions this method could be applied to detection of Sr in cosmetics with its precision and accuracy.