电感耦合等离子体质谱(ICP-MS)同时测定人发中的微量元素

Abstract

建立了微波消化、等离子体质谱同时测定人发样品中20种元素含量的方法，对影响测定结果的因素进行了讨论和优化，所测元素的检出限（3σ，n＝11）最高为1.39ng/Ml（SE），最低为0.0001ng/Ml（bA），标准加入回收率介于95%~110%之间，对国家标准物质样品分析的结果与所给参考值一致.本方法具有灵敏度高，基体干扰小，简便快速，结果可靠等优点，已成功地应用人发样品中微量元素的测定.

Contents of twenty elements in human hair were measured with microwave digestion and inductively coupled plasma massspectrometry (ICPMS).The experimental conditions were discussed and optimized.Detection limits(3σ,n=11) results indicated that the highest DL was 1.39 ng/mL(Se) and the lowest was 0.000 1 ng/mL (Ba).The recoveries of spikes For 20 elements were between 94%--110%.The analytical results of national certiFied reFerence material demonstrated the applicabilityof the proposed method.