摘要
采用硝酸溶样,以氯化银沉淀使之与硒分离,单体硒用高氯酸-硝酸溶解。在亚硫酸钠-高碘酸钾的氨性底液中,硒能产生灵敏的吸附催化波,于-0.6V起始阴极化扫描,进行硒的倒数示波极谱测定。测定范围0.0001%～0.0005%,回收率为97.22%～105.55%。
The sample is dissoloved in nitric acid.We separate subject by sivler chloride precipitation form.Pure selenium is dissolved by perchliricacid-nitric acid.Selenium has a sensitive wave in sodium sulfite-potassium periodate liquid.Begin scanning in -0.6 V,derivative polarography.Measurement range is 0.000 1%～0.000 55%,percent recovery is 97.22%～105.55%
出处
《有色矿冶》
2004年第5期60-62,共3页
Non-Ferrous Mining and Metallurgy
关键词
催化极谱法
硒
氨性底液
catalytic wave
selenium
ammoniac base solution
