电感耦合等离子体原子发射光谱法测定头发中的微量元素

Determination of Trace Metal Elements in Hair by Inductively Coupled Plasma Optical Emission Spectrometry

建立了电感耦合等离子体原子发射光谱（ICP-OES）测定人发中 Ca、Fe、Cu、Zn、Pb 五种微量元素含量的分析方法.选择了最优的分析谱线，对每种元素建立了标准曲线，相关系数 r 均大于0.999，且每种元素的检出限都很低，样品的加标回收率为94.6％~103.1％，精密度好，5种元素的相对标准偏差（RSD，n =5）在0.65％~1.52％之间，用国家标准参考物质进行方法的准确度校正，结果准确可靠.

The method was established for the determination of five trace elements including Ca,Fe,Cu,Zn and Pb in human hair by inductively coupled plasma optical emission spectrometry（ICP-OES）. The optimal analysis spectral lines were selected and the standard curves were established for every element in this method,the correlation coefficients r were larger than 0. 999. The method had low detection limits,and the recoveries of the elements were in the range of 94. 6% - 103. 1% . The method had good precision and the RSD（n = 5）in the range of 0. 65%- 1. 52% . The accuracy of the method was confirmed by the analysis of certified standard reference materials and the results showed the proposed method was accurate and reliable.