Xing, Jian-min Recovery and purification of nicotine from waste tobacco by aqueous two-phase system/reverse extraction. [electronic resource] - Natural product communications Aug 2009 - 1093-4 p. digital Publication Type: Journal Article ISSN: 1934-578X Subjects--Topical Terms: 2-PropanolAmmonium SulfateHydrogen-Ion ConcentrationKineticsNicotine--isolation & purificationNicotiana--chemistryWaste Products--analysis