催化分光光度法-流动注射连用测定饮用水中痕量铜  

Determination of Trace Copper in drink water with Flow Injection-Catalyzing Spectrophotometry

作　　者：杨东静[1] 吕治东[1] 李楠[1] 蒋和梅[1] 陈姝娟[1] 张新申[1] 

机构地区：[1]四川大学皮革化学与工程教育部重点实验室,四川成都610065

出　　处：《皮革科学与工程》2013年第5期60-64,67,共6页Leather Science and Engineering

基　　金："国家863攻关项目"(项目编号:2007AA092001-5)

摘　　要：建立了用邻菲哕啉（phen）活化Cu^2＋催化双氧水氧化邻氨基酚（o-AP）显色为指示反应，在恒温50℃时采用金属元素分析仪分析痕量铜的新方法。产物在430am波长处有最大吸收，线性方程y=0．0935x-0．0544（R^2=0．999），检出限1μg／L，相对标准偏差（RSD）=2．36％，（50μg／L，n=10）。利用本方法测定纯净水中的铜，回收率在90．3％～110．6％，灵敏度高，操作相对简单结果令人满意。The study found a method with the high sensitivity and simple operation in this paper. It works as flows： based on the catalytic action of Cu （ II ） on the oxidation of hydrogen peroxide in the action with o-aminophenol,leading to pro- duce a new color.We used automatic metal elements analyzer for analysis. The results showed that the copper content and the absorbance at 430 nm showed a good linear relationship.On the condition of 50 celsius degree,we got a linear equation y = 0.0935x - 0.0544, and the linear correlation coefficient was 0.99.The detection limit was 1 ug/L and the relative standard deviation was 2.36%.With this method,we got a satisfactory result when determined the content of copper in drinking water.The standard addition recoveries was between 90.3% and 110.6%.

关 键 词：铜 流动注射 邻菲罗啉 邻氨基酚 饮用水 

分 类 号：O657.3[理学—分析化学] R123.1[理学—化学]