Abstract:

In the presence of potassium biphthalate-sodium hydroxide buffer solution at pH4.5,trace aniline in-hibitsstrongly the fading reaction of malachite green by oxidizing with potassium M28permanganate.Based on thisstudy,a novel inhibitory kinetic-spectrophotometric method hasbeen developed for the determination of trace aniline.The experimental resultsshow that the detection limit for aniline is0.38μg/L,the linear range of the determination is0.0～9.2μg/L,The method hasbeen applied to the determination of trace aniline in wastewater with satisfactory results.

Key words: inhibitory, kinetic-spectrophotometric method, malachite green, aniline

摘要：

在pH4。5邻苯二甲酸氢钾-氢氧化钠缓冲溶液存在下，痕量苯胺对高碘酸钾氧化孔雀绿褪色反应有强烈的抑制作用，据此建立了阻抑动力学光度法测定痕量苯胺的新方法。方法检出限为0.38μg/L，测定范围为0.0～9.2μg/L。此法用于废水中苯胺的测定，结果令人满意。

关键词: 阻抑, 动力学光度法, 孔雀绿, 苯胺

CLC Number: 

• O661.1

• TU991.21