摘要
基于稀硝酸介质中溴酸钾氧化藏红T,使其荧光猝灭,硒(Ⅳ)对此反应具有阻抑作用,使荧光强度增大,建立了催化荧光法测定痕量硒(Ⅳ)的新方法。方法检出限为0.12μg L,线性范围为0.5～10μg L。方法可用于测定水样中的硒(Ⅳ)。
A new kinetic fluorimetric method was proposed for the determination of trace Se(Ⅳ). The method was based on the inhibitory effect of Se(Ⅳ) on the oxidation reaction of safranin T with potassium bromate in a nitric acid medium. The optimal conditions for the determination were studied. The linear range for selenium was 0.5～10 μg/L. The detection of limit for selenium was 0.12 μg/L. This method was applied to determine trace selenium in drinking water and mineral water samples.
出处
《分析试验室》
CAS
CSCD
北大核心
2004年第5期65-67,共3页
Chinese Journal of Analysis Laboratory
关键词
催化荧光法
藏红T
硒
Catalytic fluorimetry
Safranin T
Selenium
