A reversed phase high performance liquid chromatography method for separation and determination of 4-carboxybenzaldehyde(4-CBA) and p-toluic acid(PT acid) in terephthalic acid(PTA) was described.

• 建立了反相液相色谱法定量分析对苯二甲酸(PTA)中的对羧基苯甲醛(4-CBA)和对甲基苯甲酸(PT酸)含量的方法。