供货周期是3周左右8种组分,溶于己烷 浓度均为500μg/ml2-氯联苯2,2',3,'4,6-五氯联苯2,3-二氯联苯2,2',4,'4,'5,6'六氯联苯2,4,5-三氯联苯2,2'3,3'4,4'6,七氯联苯2,2'4,4'-四氯联苯 2,2'3,3'4,5'6,6'-八氯联苯