ICP-MS法快速测定化妆品中铬、砷、镉、钕、铅

建立化妆品中铬，砷，镉，钕，铅的电感耦合等离子体质谱测定分析方法。样品预处理采用微波消解，以⁷²Ge、¹¹⁵In、²⁰⁹Bi为内标作定量分析，对3种不同基质的化妆品进行测定，对照分析了参考标准物质。各元素平均回收率为88.8%～108%，相关系数均大于0.999，相对标准偏差（RSD）为1.1%～8.8%。

Determination of Cr, As,Cd, Nd, Pb in Cosmetics by ICP-MS

Cr, As, Cd, Nd and Pb in cosmetics were analyzed by ICP-MS, and the sample was disposed by microwave digestion. The matrix suppression effects were corrected in determination with satisfactory results by adding the internal standard elements Ge, In and Bi. Five different kinds of cosmetics were analyzed. In order to check the accuracy of method, Standard Reference Material GBW07603 Bushes, Branches and Leaves were also analyzed. The average recoveries of all elements are 90%- 103%, the linear correlation is greater than 0.999, and precision is less than 10%.