钒催化三溴偶氮胂的褪色反应特性及应用  

The Characteristic of Tribromo-arsenazo Decolorizing Reaction with Vanadium?as Catalysis and Its Analytical Application

作　　者：陆茜[1] 蔡汝秀[1] 

机构地区：[1]武汉大学化学与环境学学院,武汉430072

出　　处：《分析化学》2000年第11期1417-1420,共4页Chinese Journal of Analytical Chemistry

摘　　要：研究了在活化剂柠檬酸的存在下 ,钒 催化溴酸钾氧化三溴偶氮胂褪色反应特性 ,测定了反应级数和反应速率方程 ,拟定了反应的最佳条件 ,建立了测定痕量钒的新方法。该法灵敏度为 7.78× 10 -12 g mL ,线性范围为 0～ 8× 10 -9g mL ,用于测定人发中的痕量钒 ,结果令人满意。The decolorizing reaction of tribromo arsenazo (TBA) in the presence of potassium bromate and citric acid with vanadium? as catalyst and its application for the determination of trace vanadium? were studied. The sensitivity is 7.78×10 -12 g/mL and linear range is 0～8×10 -9 g/mL for vanadium?. The method has been applied to the determination of trace vanadium in human hair with satisfactory results.

关 键 词：催化动力学光度法 三溴偶氮胂 钒 人发 测定 

分 类 号：Q581[生物学—生物化学] O614.511[理学—无机化学]