ased on the enzymatic hydrolysis ofpenicillin into penicilloic acid which reducesthe pH value in the injected sample with im-mobilized penicillinase on silica gel,a flow in-jection analysis(FIA)system was developedfor the measurement of penicillin.

• 基于青霉素在青霉素酶的作用下会水解生成青霉素酸，降低了系统的pH值，一个青霉素流动注射分析系统在我们实验室建立起来了。