铬蓝黑R分光光度法测定钢中微量铬  

Spectrophotometric Determination of Microamounts of Chromium in Steel with Chrome Blue-Black R

作　　者：王士龙[1] 郑礼胜[1] 王西奎[1] 

机构地区：[1]山东建材学院应用化学系

出　　处：《冶金分析》1996年第5期15-16,19,共3页Metallurgical Analysis

摘　　要：研究了铬蓝黑Ｒ分光光度法测定钢中微量铬的方法。在ＨＡｃ－ＮａＡｃ弱酸性介质中，铬与铬蓝黑Ｒ形成蓝色络合物，最大吸收波长位于６００ｎｍ处，表现摩尔吸光系数ε＝２．１９×１０４，铬含量在０～６０μｇ／５０ｍｌ范围内符合比尔定律。方法用于钢中微量铬的测定，结果满意。A spectrophotometric method is proposed for the determination of chromium in steel with chrome blue-black R.The absorbance maximum of the complex is at 600 nm with apparent molar absorptivity being 2.19×10￣4.Beer's law is obeyed in the range of 0-60 μg Cr per 50ml.This method has been applied to the determination of microamounts of chromium in steel with satisfactory results.

关 键 词：铬 铬蓝黑R 分光光度法 

分 类 号：TG142.15[一般工业技术—材料科学与工程] TG115.335[金属学及工艺—金属材料]