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.
出处
《冶金分析》
CAS
CSCD
北大核心
1996年第5期15-16,19,共3页
Metallurgical Analysis
关键词
铬
铬蓝黑R
分光光度法
Chromium, Chrome blue-black R,Spectrophotometry
