不同基体改进剂对粉状化妆品中铅含量测定的影响

Influence of Different Matrix Modifiers on Determination of Pb in Powder Cosmetics

本文研究了石墨炉原子吸收光谱法测定粉类化妆品中铅含量的方法。重点讨论了不同基体改进剂对样品铅测定结果的影响。结果表明,0.25%磷酸二氢铵可有效改善和提高粉类化妆品铅含量测定的稳定性和灵敏度,RSD达到1.5%。

The determining method of Pb in powder cosmetics by graphite furnace atomic absorption spectrometry （GFAAS） was studied. The influence of different matrix modifiers on this determination was emphasized studied. When 0.25% （NH4）H2PO4 was used as matrix modifier, the stability and sensitivity of the determination of Pb in powder cosmetics were effectively improved.