College of Food Science and Engineering,Jilin Agricultural University,Changchun 130118,China;
Jilin Province Product Quality Supervision and Inspection Institute,Changchun 130103,China;
College of Chemistry,Jilin University,2699 Qianjin Street,Changchun 130012,China;
Dynamic microwave-assisted extraction; Liquid phase microextraction; Gas chromatography; Organochlorine pesticides; Grain;