Mn(Ⅱ)-KIO_4-偶氮胂Ⅲ催化动力学光度法测定钢铁中痕量锰  

Spectrophotometric Determination of Trace Manganese in Steel by Catalytic Kinetics of Mn(Ⅱ)-KIO_4-Arsenazo Ⅲ System

作　　者：崔丽君[1] 李慧芝[1] 于京华[1] 藏传梅 

机构地区：[1]山东建材学院应化系,济南250022

出　　处：《冶金分析》1997年第2期21-22,20,共3页Metallurgical Analysis

摘　　要：研究了在硼砂-NaOH 介质中,锰催化高碘酸钾氧化偶氮胂Ⅲ褪色的指示反应。由此建立了一种高灵敏、高选择性测定痕量 Mn(Ⅱ)的新方法。可测0.01～1.5μg/10ml 范围的锰(Ⅱ),方法的检测限为2.86×10^(-11)g/ml。A method for the determination of trace manganese catalyzing the decolouring reaction of arsenazo Ⅲ reduced in Na_2B_4O_7-NaOH solution by potassium periodate has been studied.The kinetic condition was presented.The method has high sensitivity and selectivity for determing trace manganese in steel samples,and the range of determination is 0.01-1.5μg Mn/10ml and the detection limit is 2.86×10^(-11)g/ml.

关 键 词：锰 偶氮胂Ⅲ 钢铁 催化光度法 

分 类 号：TF031[冶金工程—冶金物理化学] TG115.335[金属学及工艺—物理冶金]