A method for the determination of dicofol and pyridaben in mixed Mc by gas chromatography was studied.The internal standard is dioctyc phthalate.

• 利用气相色谱法，以邻苯二甲酸二辛酯为内标物，同时测定复配混合乳油中的三氯杀螨醇和哒螨灵的含量。