示波指示技术在动力学分析中的应用——Ⅳ.示波双安培法在Landolt 效应测定钼(Ⅵ)、铁(Ⅲ)和钒(Ⅳ)中的应用

Application of Oscillo-indicating Techniques in Kinetic Analysis Ⅳ.Determination of Molybdenum (Ⅵ),Iron (Ⅲ) and Vandium(Ⅳ) by Landolt Reactions With Oscillo-biamperometry

本文报道了示波双安培指示技术在Landolt效应测定MO(Ⅵ)、Fe(Ⅱ)和V (Ⅳ)中的应用,利用Mo(Ⅵ)和Fe(Ⅱ)对NaBO_3氧化KI反应的催化作用及V(Ⅳ)对KCIO_3氧化KI反应的催化作用分别测定了Mo(Ⅵ)、Fe(Ⅱ)和V(Ⅳ)。Mo(Ⅵ)、Fe(Ⅱ)和V(Ⅳ)的测定下限分别可达1×10^(-8)mol/L、1×10^(-7)mol/L和2×10^(-7)mol/L数量级。

The application of oscillo-biamperometric indicating technique for the determina tion of Mo(Ⅵ), Fe(Ⅲ)and V(Ⅳ)by Landolt effect was reported. They were determined on the basis of oxidation of KI yb NaBO_3 which was catalyzed by Mo(Ⅳ)and Fe(Ⅲ)and by KClO_3 which was catalyzed by V(Ⅳ). The detection limit was 1×10^(-8), 1×10^(-7) and 2×10^(-7) mol/L to Mo(Ⅵ), Fe(Ⅲ)and V(Ⅳ), respectively.