二安替比林苯甲烷光度法测定微量铜  

Determination of Minor Copper(Ⅱ) by Diantipyrylphenylmethane Spectrophotometric

作　　者：谢治民[1] 邓继勇[1] 王焕龙[1] 高影[1] 胡智[1] 

机构地区：[1]湖南工程学院,湖南湘潭411101

出　　处：《湖南有色金属》2005年第3期36-37,62,共3页Hunan Nonferrous Metals

摘　　要：在磷酸(1+10)介质中,二安替比林苯甲烷(DAPM)与过硫酸铵生成—橙色物质,微量铜能使其显色产物的吸光度值降低,铜浓度在0～5μg/10mL范围内符合比尔定律,λmax=475nm,ε=5.35×106L/mol·cm。由此建立了微量铜的测定方法,并用于铝合金中铜的测定,结果满意。in Phosphoric Acid medium,Diantipyrylphenylmethane is oxidized to form an orange product, the product's extinction reduces because of minor Copper(Ⅱ).Beer's law is obeyed in the range of 0～5 μg/10mL Copper(Ⅱ).The maximum absorption of the product is at 475nm ,and it molar absorptivity is 5.35×10~6L/mol·cm.This method has been applied to the determination of minor Copper(Ⅱ) in Alminum alloys and the result is satisfactory.

关 键 词：二安替比林苯甲烷 铜 光度法 铝合金 

分 类 号：O657.32[理学—分析化学]