摘要
本文对采用铱(Ⅲ)-氯化亚锡-罗丹明B高灵敏显色体系浮选光度法测定铱进行了研究。表观摩尔吸光系数ε553nm=4.77×10~5L·mol^(-1)·cm^(-1),铱含量在0~18.0μg/25ml范围内符合比耳定律。对外来离子的干扰和分离进行了研究,拟定的方法可用于一些低品位物料中铱的分析。
A highly sensitive flotation一spectrophotometric method is based on the ion-associate for-med by the anionic tin(Ⅱ) chloride complex of iridium with rhodamine B.The ion asso-ciate,shaken with n一pentane and washed,is dissolved in absolute alcohol.The maxium absor-ption is at 553nm.The molar absorptivity is 4.77×lO^5L·mol^(-1)·cm^(-1). Beer′s law is obeyedin the range of 0一18.Oμg Ir/25ml.The relative standard deviation is less than 4%.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1990年第9期836-839,共4页
Chinese Journal of Analytical Chemistry
关键词
铱
罗丹明B
浮选光度法
Iridium
Rhodamine B
Flotation-spectrophetometry