We use internal standard method to seperate and test the a.i.of cyanazine 40 SC,and the internal standard is dicyclohexyl phthalate.

• 采用气相色谱法,内标物为邻苯二甲酸二环己酯,用内标法对40%25氰草津水悬浮剂的有效成分进行分离和检验。