摘要
钒对许多均相反应都有催化作用,但利用催化光度法测定痕量钒国内研究较少。作者发现钒(Ⅴ)对稀硫酸介质中溴酸钾氧化溴酚蓝褪色的反应有催化作用,通过条件试验,建立了利用这一新指示反应催化光度法测定痕量钒的方法。
A new catalytic spectrophotometric method has been developed for determination of trace amount of vanadium based on oxidation decoloration of bromophenol blue with potassium bromate in sulfuric acid (pH=2.2). Addition of citric acid could advance the sensitivity. The range of determination is 0.001 to 0.50μg/25mL vanadium (V). Combining with the separation technology of ionic exchange, the method was applied to determination of trace amount of vanadium in nature water.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1989年第3期305-307,共3页
Chemical Journal of Chinese Universities
关键词
钒
催化
溴酚蓝
分光光度法
Catalysis, Bromophenol blue, Decoloration, Activation, Spectropho- tometry
