催化褪色光度法测定痕量锰的研究及应用  

Study on Determination of Trace Manganese by Catalytic Decolourizing Spectrophotometry

作　　者：康文[1] 周发连[1] 邓先平 

机构地区：[1]华东地质学院应用化学系

出　　处：《华东地质学院学报》1997年第2期141-146,共6页Journal of East China Geological Institute

摘　　要：本文研究了在ｐＨ＝４．０醋酸－醋酸钠缓冲溶液中，锰（Ⅱ）催化ＫＩＯ４氧化５－Ｂｒ－ＰＡＤＡＰ的褪色反应及其动力学条件，建立了一个测定痕量锰的高灵敏度新方法。方法灵敏度为１．３２×１０－１０ｇ／ｍｌ。测定范围Ｍｎ２＋浓度为０～１．５μｇ／２５ｍｌ，用于测定人发、自来水、茶叶中痕量锰。The decolourizing reaction and kinetic conditions of oxidizing 5 Br PADAP with KIO 4 catalyzed by Mn(Ⅱ) in buffer solution of HAC NaAC (pH=4.0) is discussed in this papers.A new method of determinating trace Mn(Ⅱ) with sensitivity of 1.32×10 -9 g/ml is established The new method with the range of Mn 2+ concentration between 0～1.5 μg/25 ml is applied to determinate the trace Mn(Ⅱ) of hair, water and tea sample with satisfactory results.

关 键 词：痕量 锰 催化褪色 分光光度法 

分 类 号：O614.711[理学—无机化学]