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.
出处
《分析测试学报》
CAS
CSCD
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)
