对苯二甲酸残渣中总酸含量的测定

Determination of Total Acid of P-phthalic Acid Residue

通过实验改进并总结了氧化残渣系统浆料总酸含量的测定方法,提出在滴定前加入吡啶作溶剂,EDTA作掩蔽剂,有效改善了滴定速度慢、终点判定不准的情况,成功实现了残渣系统浆料总酸含量的准确测定。

Through improving experiment and summarizing determination methods of total acid for the oxidation residue system, it was proposed that to add pyridine as solvent, EDTA as masking agent before titration can effectively improve low speed of titration and inaccuracy end point of titration. Accurate determination of total acid of the residue system was successfully realized.