基体分离-电感耦合等离子体质谱法测定高纯硒中13种杂质元素

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英文篇名：Matrix Separation and Determination of 13 Impurity Elements in High Purity Selenium by Inductively Coupled Plasma Mass Spectrometry 作者：胡芳菲 ; 于磊 ; 宋永清 ; 王长华 ; 祝利红 英文作者：HU Fang-fei;YU Lei;SONG Yong-qing;WANG Chang-hua;ZHU Li-hong;Guobiao ( Beijing) Testing & Certification Co.,Ltd.; 关键词：基体分离 ; 电感耦合等离子体质谱法 ; 高纯硒 ; 杂质元素 英文关键词：matrix separation;;inductively coupled plasma mass spectrometry;;high purity selenium;;impurity element 中文刊名：FXCQ 英文刊名：Analysis and Testing Technology and Instruments 机构：国标(北京)检验认证有限公司; 出版日期：2019-06-21 出版单位：分析测试技术与仪器 年：2019 期：v.25;No.108 语种：中文; 页：FXCQ201902013 页数：4 CN：02 ISSN：62-1123/O6 分类号：67-70

摘要

采用基体分离-电感耦合等离子体质谱法(ICP-MS)测定高纯硒中13种痕量杂质元素含量,优化了试验条件.利用二氧化硒在真空条件下升华温度低的特点挥发基体硒,选择合适的内标元素,考察基体效应的影响.结果表明,选择Cs作为待测元素的内标更合适.测定硒残留量小于100μg/m L的样品,不影响各待测元素.方法检出限为0.007～0.033μg/g,RSD为5.7%～19%,加标回收率在90.2%～115%之间,可以满足高纯硒中痕量杂质元素含量的测定.
        An inductively coupled plasma mass spectrometric method after matrix separation was developed for the determination of 13 impurity elements in high purity selenium. Selenium was separated under low sublimation temperature and vacuum conditions. An appropriate internal standard element was chosen and the influence of matrix effect was investigated. The results showed that caesium was the appropriate internal standard element for the elements to be measured,with residual selenium under 100 μg/m L,and do without interference for the determination of impurity elements. The limit of determination was 0. 007 ～ 0. 033 μg/g,the relative standard deviation was 5. 7% ～ 19% and the spiked recovery was 90% ～ 115%. This method can be used to determine trace elements in high purity selenium of99.999 9%.

引文

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