中文摘要：

在非水体系中，用电位滴定法对PET微波条件下水解产物中的端羧基含量进行测定。根据反应程度，采用两种不同的溶剂溶解固体产物，用氢氧化钾-乙醇标准溶液在室温下进行滴定。实验结果表明，用该方法测定PET微波水解产物中端羧基含量具有结果准确，方法简便等优点。

英文摘要：

In this paper, the carboxylic acid concentrations in the products of PET hydrolyzed by microwave were measured using an end- group analysis technique. Potentiometric titrations were carried out in two different solvent systems, depending on the extent of hydrolysis. Each solution was titrated with potassium hydroxide - ethanol solution at room temperature. The results showed that important features of the method are simple and accurate.