沉碲后液中镍、铜、银、硒的测定

Determination of nickel,copper,silver and selenium in liquid after deposition of tellurium

针对沉碲后液中镍、铜、银、硒的测定进行了方法研究,建立了火焰原子吸收法测定镍、铜、银,沉淀富集分离-硫代硫酸钠滴定法测定硒的分析方法。方法简便、快速、准确,其RSD在0.5%~5.73%之间,回收率在97.0%~108.1%之间,精密度试验和加标试验结果令人满意。

The methods for the determination of nickel,copper,silver and selenium in the liquid after precipitation tellurium were studied.The methods for the determination of nickel,copper and silver by flame atomic absorption method and selenium by precipitation enrichment and separation-sodium thiosulfate titration were established.The method is simple,rapid and accurate.The RSD of the method are 0.5%~5.73%,and the recoveries are 97.0%~108.1%.The precision test and standard test results are satisfactory.