Extraction of parathion by hydroxyl-functionalized ionic liquid aqueous two-phase system

摘要

An ionic liquid/aqueous two-phase system (ATPS) formed by the hydroxyl-functionalized ionic liquid 3-(2, 3-dihydroxypropyl)-1-methylimidazolium chloride ([2, 3-dhpmim]Cl) and salt has been developed for extraction of parathion. The experimental parameters affecting the extraction efficiency including the kind of salts, the amounts of the salt, the amount of ionic liquid, extraction times were investigated and optimized. The conclusion shows that the ionic liquid-ATPS can be used for extraction of parathion successfully from environmental water samples. Under optimized conditions, ionic liquid-ATPS has the highest extraction efficiency for parathion (83%).