二安替比林-(3,4-二溴)-苯基甲烷催化光度法测定痕量铑  

Kinetic Catalytic Spectrophotometric Determination of Rhodium(Ⅲ) with DADBM

作　　者：崔永春[1] 胡秋芬[2] 尹家元[2] 

机构地区：[1]昆明师范高等专科学校化学系,昆明市昆师路2号650031 [2]云南大学化学系,昆明市650091

出　　处：《光谱实验室》2002年第4期466-469,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：研究了在磷酸介质中 ,铑 ( )对溴酸钾氧化二安替比林 - (3,4 -二溴 ) -苯基甲烷 (DADBM)显色反应的催化作用 ,建立了一种铑的高灵敏分析方法 ,其检出限为 1.0× 10 -9g/ L,铑含量在 0— 2 0 μg/ L范围内符合比耳定律 ,本方法用于铝基催化剂中痕量铑的测定 ,结果令人满意。Based on catalytic effect of rhodium(Ⅲ) on the oxidative color reaction of diantipyryl-3,4-(dibromo)-phenylmethane (DADBM) with KBrO 3 in phosphoric acid medium in boiling water bath,a new kinetic catalytic spectrophotometric method for the determination of rhodium was established.The detection limit is 1.0×10 -9g/L.Beer's law is obeyed in the range of 0-20μg/L.This method were applied to the determination of rhodium in catalysts with satisfactory results.

关 键 词：测定 动力学光度法 铑 二安替比林-(3 4-二溴)-苯基甲烷 痕量分析 铝基催化剂 

分 类 号：O614.821[理学—无机化学] TQ426.81[理学—化学]