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.
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
关键词
痕量
锰
催化褪色
分光光度法
catalytic decolorizing
spectrophotometry
trace manganese
