ICP-AES测定ZnWO_4单晶中痕量元素的方法研究  

A Study on the Determination Method of Trace Elements in ZnWO_4 Monocrystal by ICP-AES

作　　者：姚士仲[1] 武少华[1] 翟福东[1] 曾曾[1] 

机构地区：[1]北京工业大学,北京市朝阳区平乐园100号100022

出　　处：《光谱实验室》1992年第6期27-33,共7页Chinese Journal of Spectroscopy Laboratory

摘　　要：本文建立了电感耦合高频等离子体原子发射光谱法(以下简称ICP-AES)测定钨酸锌单晶中几种掺杂元素的分析方法。用聚四氟乙烯(PTFE)高压密封溶弹溶解样品。对ZnWO_4的基体效应、溶液酸度的影响、溶样条件以及仪器工作条件等进行了实验研究。用本法测定钨酸锌单晶中掺杂元素锰、铬、钛的检出限分别为:0.09、0.041和0.01(ppm);相对标准偏差分别为3.4、4.4、和3.5(%);回收率分别为:97、104和90(%)。本法与电弧粉末发射光谱分析相比,具用简单、快速、准确的特点。An analytical method of the determination of trace elements in zinc tungstate monocrystal by inductively coupled plasma-atomic emission spec- troscopy (abbr ICP-AES) has been proposed in this paper. The problem of sample dissolution of ZnWO_4 monocrystal has been solved successfully by using polytetrafluoroethylene (abbr PTFE) high pressure closed digest bomb. Experiments were carried out on study of ZnWO_4 matrix effect and the impact of the solution acidity. Selection of dissolution procedures and opti- mization of instrumental working parameters were made. Finally, the sati- sfactory results were obtained when the actural specimen were determined. This method displays the features of simplicity, the rapidity and accuracy. The limits of detection of Cr, Mn and Ti were respectively 0.04ppm, 0.09 ppm and 0.0lppm. The recovery rates of the method fall into 90-104% for Cr、Mn and Ti. The relative standard diviations of Cr, Mn and Ti were 3.4%, 4.4% and 3.5% respectivelly.

关 键 词：ICP-AES 钨酸锌 单晶 掺杂元素 

分 类 号：O614.241[理学—无机化学]