邻苯二酚紫—溴化十六烷基三甲铵分光光度法测定钢中微量铬  

Spectrophotometric Determination of Microamounts of Chromium in Steel with Pyrocatechol Violet and Cetyltrimethylammonium Bromide

作　　者：郑礼胜[1] 王军[1] 沈霞 矫清华 

机构地区：[1]山东建材学院应化系,济南250022

出　　处：《冶金分析》1993年第5期23-24,共2页Metallurgical Analysis

摘　　要：本文研究了ＰＶ－ＣＴＭＡＢ光度法测定铬。在ＨＡｃ－ＮａＡｃ缓冲介质中，显色配合物最大吸收位于６５０ｎｍ处，表观摩尔吸光系数为６．２ｘ１０＾４。铬含量在０－１４μｇ／２５ｍｌ范围内符合比尔定律。本方法应用于钢中微量铬的测定，结果满意。A spectrophotometric method is proposed for the determination of chromium with pyrocatechol violet and cetyltrimethylammonium bromide. The absorbance maximum of the complex is at 650nm with apparent molar absorpt vity being 6.2×l04, Beer's law is obeyed in the range of 0-14ug Cr per 25 ml. This method has been applied to the determination of microamounts of chromium in steel with satisfactory results.

关 键 词：邻苯酚紫 CTMAB 铬 钢 微量分析 

分 类 号：TG142.15[一般工业技术—材料科学与工程]