催化动力学法联合测定钼(Ⅵ)和钒(Ⅴ)的研究

Determination of Vanadium(Ⅴ)and Molybdenum(Ⅵ)by Kinetiic Method

本文研究了溴酸盐-碘化物体系的Landolt型反应在钼和钒共存时的测定方法。用抗坏血酸产生Landolt效应,柠檬酸盐掩蔽钼以测定钒;用硫脲掩蔽钒的同时产生Landolt效应,以测定钼,结果满意。

A trace vanadium can be determined by means of Landolt-typed reaction with bromate-iodide-ascorbic acid in the presence of molybdenum. While citrate-citric buffer solution is used to control the pH of the reaction mixture, the interference of molybdenum is effectively chocked with citrate ion. A trace molybdenum can be determined by means of Landolt-typed reaction with bromate-iodide-thiourea in the presence of vanadium. The interference of vanadium is reduced by masking with thiourea.