示波电位动力学分析法测定环境水样中的痕量芳胺

Determination of super trace aromatic amine in environmental water samples with oscillographic potentiometric kinetic method

将动力学分析法与示波电位法相结合，利用ＫＢｒＯ３与ＫＢｒ的反歧化反应和溴代反应体系，提出了测定痕量芳胺的新方法。在２５℃，０．０４ｍｏｌ／ＬＨＣｌ介质中，该法的最低检出限为２．８ｎｇ／ｍＬ，相对标准偏差为１．４７％。将其应用于农业环境水样中芳胺的测定，结果与国际法相差在±５％以内。

A new oscillographic potentiometric kinetic method for determining super trace aromatic amine was developed, based on the brominating reaction of aromatic amine and bromine. The limit of detection was 2.8 ng/mL, and the relative standard deviation was 1.47%. The contents of aromatic amine in enviromental water samples were determined with this method, and the relative deviation was within ±5% compared with the national standard method.