摘要
Ｏｓ（Ⅳ）对酸性介质中溴酸钾氧化ＤＢＳ－偶氮氯磷的褪色反应有明显的催化作用。据此反应建立了微量锇的催化分光光度法，方法的检出限为０．０１μｇ／１０ｍｌ，Ｏｓ（Ⅳ）在０．０１～０．２０μｇ／１０ｍｌ有良好的线性关系。反应在水相中进行，灵敏度高，简便快速，用于贵金属精矿中锇的测定，结果满意。
A new catalytic spectrophotometric method for the determination of osmium was established based on the catalytic action of Os(Ⅳ)on the oxidative fading between 2-(4-chloro-2-phosphonophenyl)azo-7-(2,6-dibromo-4-suifophenyl)azo-1,8-dihyd roxy-,6-naphthalenedisuironic acid and KBrO3in acid medium on the water bath.The method offers the advantages of simplicity,rapidity,and sensitivity.Beer′law is obeyed in the range of 0.01～0.20μg/ 10ml The method has been applied to the determination of osmium in ore with satisfactory.
出处
《贵金属》
CAS
CSCD
北大核心
1996年第4期29-31,共3页
Precious Metals
基金
甘肃省自然科学基金
甘肃省教委资助
关键词
锇
催化分光光度法
Osmium,Catalytic spectrophotometry
