偏硼酸锂熔融-电感耦合等离子体发射光谱法测定有色金属矿中二氧化硅  

Molten lithium metaborate-inductively coupled plasma emission spectrometry for determination of silicon dioxide in non-ferrous metal

作　　者：袁润蕾[1,2] 李小辉 于亚辉[1,2] 刘春霞 杜峥[1,2] 赵冲 YUAN Run-lei;LI Xiao-hui;YU Ya-hui;LIU Chun-xia;DU Zheng;ZHAO Chong(Henan Provincial Rock&Mineral Testing Centre,Zhengzhou 450012,China;Key Laboratory of Precious Metals Analysis and Exploration Technology,Ministry of Land and Resources,Zhengzhou 450012,China)

机构地区：[1]河南省岩石矿物测试中心,河南郑州450012 [2]自然资源部贵金属分析与勘查技术重点实验室,河南郑州450012

出　　处：《现代化工》2024年第S02期391-396,共6页Modern Chemical Industry

基　　金：河南省自然资源厅2023年度自然资源科研项目(2023-3);豫地矿科研([2021]Z-32)。

摘　　要：采用偏硼酸锂于950℃熔融样品,冷却后用盐酸溶解提取定容,选择Si发射波长251.6 nm为最佳分析谱线,建立了电感耦合等离子体发射光谱法测定有色金属矿中二氧化硅的方法。结果表明,二氧化硅在线性范围内的标准曲线相关系数为0.9999,方法检出限为0.32%。对4个国家一级有证标准物质中的二氧化硅进行分析,测定值均与认定值相符。该方法准确度和精密度均满足地质矿产实验室测试质量管理规范(DZ/T 0130—2006)的相关要求。Lithium metaborate is melted at 950℃and then dissolved in hydrochloric acid to extract and set the volume.By selecting Si 251.6 nm as the best spectral line,a method is established for the determination of silicon dioxide in non-ferrous metals ore by inductively coupled plasma emission spectrometry.Results show that the correlation coefficient of the standard curve of silicon dioxide in the linear range is 0.9999,and the detection limit is 0.32%.Silicon dioxide in certified reference materials at the national level is determined according to the experimental methods,the accuracy and precision of this method can meet the requirements of DZ/T 0130—2006.

关 键 词：偏硼酸锂 有色金属矿 电感耦合等离子体发射光谱法 二氧化硅 

分 类 号：O65[理学—分析化学]