摘要
研究了１－［（２－吡啶）］偶氮－２－萘酚－磺酸（简称ＰＡＮ－Ｓ）与锰显色反应的最佳条件。在ｐＨ９硼砂－ＨＣ１介质中，锰与ＰＡＮ－Ｓ形成１：２红色配合物，λｍａｘ＝５３５ｕｍ，ε５３５＝２．６６×１０４Ｌ·ｍｏｌ－１·ｃｍ－１．０～５０μｇＭｎ／２５ｍＬ符合比尔定律。本法可满意地用于测定碳素比色钢、低合金钢和碳素钢。
The reaction of PAN-S with manganese is studied. In Na2B4O7-HCI solution, manganese can form a red complex with PAN-S, which the ratio of manganese to PAN-S is 1: 2. The molor absorptivity is 2.66 ×104L. mol-1. cm-1at 535um. Beer's law is obeyed in the range of 0～50μg/25mL for manganese. The method has been applied to the determination of trace manganese in carbon steel, low steel alloy and carbon color steel with satisfactory results.
出处
《山东建材学院学报》
1994年第2期23-26,共4页
Journal of Shandong Institute of Building Materials
关键词
分光光度法
锰
显色剂
spectrophotometry
manganese
developer
