阻抑动力学光度法测定痕量间苯二酚  

Inhibitory Kinetic-Spectrophotometric Determination of Trace Resorcinol

作　　者：黄志勇[1] 陈国树[1] 彭在姜[1] 

机构地区：[1]南昌大学化学系,南昌330047

出　　处：《分析化学》1998年第11期1298-1302,共5页Chinese Journal of Analytical Chemistry

摘　　要：研究发现，在硫酸介质中，Ｆｅ（Ⅲ）能催化Ｈ２Ｏ２与甲基红之间的褪色反应；加入间苯二酚后，间苯二酚又能灵敏地阻抑该氧化褪色反应，同时研究了该阻抑褪色反应的动力学条件，从而建立了一种新的测定痕量间苯二酚的方法。该方法的测定范围为０．０～４０．０μｇ／Ｌ间苯二酚，检测限为１．２０ × １０－６ｇ／Ｌ间苯二酚。用于实验样品中间苯二酚的测定，结果令人满意。It has been observed that resorcinol can sensitively inhibit the reaction of H2 O2 discoloration of methyl red catalyzed by Fe(Ⅲ) in dilute sulfuric acid solution. The kinetics of this reaction was investigated in detail and a new method for the determination of trace resorcinol was proposed. The detection limit is 1 .2 x 10-6 g/L and the calibration graph is rectilinear from 0.0 - 4O.0 μg/L resorcinol. It has been applied.satisfactorily to the determination of trace resorcinol in waste water.

关 键 词：阻抑 动力学光度法 间苯二酚 分析 

分 类 号：O625.312[理学—有机化学]