摘要
研究了１－〔（５－溴－２－吡啶）偶氮〕－２－萘酚－６－磺酸（简称５－Ｂｒ－ＰＡＮ－Ｓ）与锰显色反应的最佳条件。在ｐＨ＝９．０的硼砂－盐酸缓冲溶液中，试剂大吸收波长为５６８ｎｍ，其摩尔吸光系数为２．０６×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，锰的含量在０～５０μｇ／２５ｍＬ，符合比尔定律。
This paper studies the best conditions of manganese (Ⅱ) reacting with 1 5 Bromine 2 pyridine)azo 2 naphthol 6 sulfonic acid(5 Br PAN S)to form a red complex at pH=9 0 borax sodium hydrochloric acid buffer solution.The molar absorptivity of the complex is 2 06×10 4L·mol -1 ·cm -1 at the maximum absorption wave length 568nm.The results are consistent with the Beers law when the Mn(Ⅱ) is in the range of 0 to 50μg/25mL.
出处
《山东建材学院学报》
1996年第3期82-84,共3页
Journal of Shandong Institute of Building Materials
关键词
分光光度法
锰
显色剂
spectrophotometry
manganese(Ⅱ)
developer
