The first dissociation constants of four water-miscible porphyrins were measuredusing the method of pH potential titration with computer treatment and thermodynamic func-tion value △G,△H,△S were also obtained.
采用ｐＨ电位滴定－联机处理法测定了四种水溶性卟啉的一级解离常数，同时求得了这一过程的热力学函数值△Ｇ，△Ｈ和△Ｓ。