毛细管电泳法测定PTA中BA、4-CBA和p-TOL含量

Determination of the Content of BA、4-CBA、p-TOL in PTA by Capillary Electrophoresis

苯甲酸 (BA)、4 -羧基苯甲醛 (4 - CBA)和对甲基苯甲酸 (p- TOL)是对苯二甲酸 (PTA)产品的重要质量指标。本文用毛细管电泳法测定 PTA中 BA、4 - CBA和 p- TOL含量 ,加标回收率为 96 %— 10 6 % ,方法操作简便、快速、准确。

The amounts of benzaldehyde(BA)?4-carboxy benzaldehyde (4-CBA) and para toluic acid (p-TOL) as a main quality index in PTA product were determined by Capillary electrophoresis with the recovery of 96%-106%.The method is simple,rapid and accurate.