催化动力学光度法测定痕量铜的研究  

Spectropbotometric Determination of Trace Cop-per by Catalytic Kinetics

作　　者：张文德[1] 孙仕萍[1] 

机构地区：[1]河北唐山市卫生防疫站

出　　处：《分析试验室》1994年第3期49-51,共3页Chinese Journal of Analysis Laboratory

摘　　要：本文研究了在氨水介质中铜（Ⅱ）催化过氧化氢氧化亮黄的褪色反应及其动力学条件，建立了一种超高灵敏、高选择性的测定环境试样中痕量铜的新方法，可测定０．００４～０．５μｇ／２５ｍＬ范围内的铜（Ⅱ）。A method has been studied in this paper for thedetermination of trace copper(Ⅱ)in environmentalsamples with high sensitivity and selectivity,based onthe fact that trace copper(Ⅱ )in ammonia water solu-tion may catalyze the discoloring oxidation reaction ofbrilliant yellow by hydrogen peroxide.The range ofdetermination is 0. 004～0.5μg/25mL and the indirectapparent molar absorptivity is 4.1×10￣6L·mol￣(-1)·cm￣(-1).

关 键 词：催化反应 分光光度法 铜 环境试样 

分 类 号：X830.2[环境科学与工程—环境工程]