全谱交直流电弧发射光谱仪测定多金属矿中微量锡

Determination of Trace Tin in Polymetallic Ore on Full Spectrum AC/DC Arc Emission Spectrometer

建立了全谱交直流电弧发射光谱仪直接测定多金属矿中锡的方法.以Ge为内标,K_(2)S_(2)O_(7)、Al_(2)O_(3)、KI、C粉为缓冲剂,缓冲剂与样品1∶1混合进行测定.方法检出限为0.16μg/g,精密度为4.43%~7.38%,加标回收率为91.4%~109.0%.使用方法测定国家一级标准物质,测定结果与标准值相符.方法简单、快捷,分析测试范围宽,能够满足多金属矿样品的分析要求.

A method for the direct determination of trace tin in polymetallic ore on a full spectrum AC/DC arc emission spectrometer was set up.Ge was used as the internal standard,K_(2)S_(2)O_(7),Al_(2)O_(3),KI,C powder were used as the buffer,and the buffer were mixed with the sample at a ratio of 1∶1 for the determination.The detection limit of this method was 0.16μg/g,the precision was 4.43%~7.38%,and the recovery was 91.4%~109.0%.The method was used to determine the national first-level standard materials,and the result was in good agreement with the standard value.The method is simple,rapid,is suitable for a wide range of analysis and testing,and can meet the requirements of the analysis of polymetallic ore samples.