环境水样中邻苯二胺测定的阻抑动力学光度法  

Inhibitory Kinetics Spectrophotometry Determination of Trace o-Phenylenediamine in Environmental Water Sample

作　　者：陈国树[1] 阳小燕[1] 彭在姜 

机构地区：[1]南昌大学化学与材料科学学院,江西南昌330047

出　　处：《分析测试学报》2000年第6期21-24,共4页Journal of Instrumental Analysis

基　　金：江西省自然科学基金资助项目(Z01424)

摘　　要：研究发现，在盐酸介质中痕量邻苯二胺能灵敏地阻抑Ｆｅ３＋催化双氧水氧化甲基红的褪色反应。研究 了该反应的动力学参数，并探讨了反应机理，建立了一种测定环境水样中邻苯二胺的新方法。该法的测定范围 为 ０．０～４０．０ μｇ／Ｌ，检出限为 ２．４ μｇ／Ｌ，用于环境水样中邻苯二胺的测定，获得了满意结果。It has been found that o -phenylenediamine can sensitively inhibit the methyl red discoloration reaction with H2O2 catalyzed by Fe(Ⅲ) in chlorhydric acid medium. The kinetic parameters of the re- action were investigated and reaction mechanism was discussed. A new method for the determination of trace o -phenylenediamine was proposed with the detection limit of 2. 4 μg/L and linear range of 0.0- 40. 0 μg/L. It has been applied satisfactorily to the determination of trace o -phenylenediamine in envi- ronmental water sample.

关 键 词：阻抑动力学光度法 邻苯二胺 测定 环境水样 

分 类 号：X832.02[环境科学与工程—环境工程] X132