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Chinese Standard: GB/T 30921.1-2014

Test method of purified terephthalic acid (PTA) for industrial use—Part 1:Determination of concentrations of 4-carboxybenzaldehyde (4-CBA)and p-toluic acid (p-TOL)

全国化学标准化技术委员会石油化学分技术委员会(SAC/TC 63/SC 4)

GB/T 30921的本部分规定了测定工业用精对苯二甲酸(PTA)中对羧基苯甲醛(4-CBA)和对甲基苯甲酸(p-TOL)含量的高效液相色谱法和高效毛细管电泳法。
本部分规定的高效液相色谱法适用于4-CBA和p-TOL的含量分别在2 mg/kg和10 mg/kg以上的精对苯二甲酸试样的测定;高效毛细管电泳法适用于4-CBA和p-TOL的含量分别在1 mg/kg和5 mg/kg以上的精对苯二甲酸试样的测定。

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