Methods: The ointment was prepared with Chloramphenicol,Zinc oxide etc.The content of Chloramphenicol was detected by HPLC and zinc by complexometric titration.

• 方法:以氯霉素、氧化锌等制备软膏剂,采用高效液相色谱法测定氯霉素的含量,采用络合滴定法测定氧化锌含量。