铱(Ⅲ)-氯化亚锡-罗丹明B高灵敏显色反应的研究——浮选光度法测定铱  

Study on Highly Sensitive Colour Reaction in the System of Iridium (Ⅲ)-Tin (Ⅱ) Chloride-Rhodamine B ——Flotation-Spectrophotometric Determination of Iridium

作　　者：杨国祥[1] 赵敏政[1] 李振亚[1] 

机构地区：[1]昆明贵金属研究所,1988届研究生昆明650221

出　　处：《分析化学》1990年第9期836-839,共4页Chinese Journal of Analytical Chemistry

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％.

关 键 词：铱 罗丹明B 浮选光度法 

分 类 号：O614.825[理学—无机化学]