锰(Ⅱ)—对二安替比林基邻溴苯基甲烷催化光度法测定痕量铜(Ⅱ)  

Catalytic Spectrophotometric Determination of Trace Copper(Ⅱ)with Diantipyryl-(2-bromo)phenylmethane

作　　者：龙莉[1] 徐其亨[1] 

机构地区：[1]云南大学化学系,昆明650091

出　　处：《冶金分析》1997年第3期12-14,共3页Metallurgical Analysis

基　　金：云南应用基础基金

摘　　要：研究了在磷酸介质中 Cu(Ⅱ)抑制 Mn(Ⅱ)对二安替比林基邻溴苯基甲烷(DAoBM)与铬(Ⅵ)的显色反应动力学条件,建立了一种利用灵敏的阻催反应选择性测定痕量 Cu(Ⅱ)的新方法,可测0.5～5.0μg/25ml范围的铜(Ⅱ)。方法检测限为2.0×10^(-8)g/ml。A method was studied for the determination of trace copper(Ⅱ)which can inhibit the colour reaction of chro- mium(Ⅵ)to diantipyryl-(2-bromo)phenylmethane(DAoBM)in phosphoric acid solution.The reaction condition was also studied.The method has high sensitivity and selectivity for determining trace copper.The range of determination is 0.5-5.0μg/25ml and the detection limit is 2.0×10^(-8)g/ml.

关 键 词：动力学光度法 DAoBM 铜 催化光度法 

分 类 号：O614.121[理学—无机化学] O657.39[理学—化学]