SUBSCRIBESUBSCRIBESUBSCRIBEHomeHistory & SocietyScience & TechBiographiesAnimals & NatureGeography & TravelArts & CultureProConMoneyGames & QuizzesVideosOn This DayOne Good FactDictionaryNew ArticlesHistory & SocietyLifestyles & Social IssuesPhilosophy & ReligionPolitics, Law & GovernmentWorld HistoryScience & TechHealth & MedicineScienceTechnologyBiographiesBrowse BiographiesAnimals & NatureBirds, Reptiles & Other VertebratesEnvironmentFossils & Geologic TimeInsects & Other InvertebratesMammalsPlantsGeography & TravelGeography & TravelArts & CultureEntertainment & Pop CultureLiteratureSports & RecreationVisual ArtsImage GalleriesPodcastsSummariesTop QuestionsLists and StoriesBritannica KidsAsk the ChatbotGames & QuizzesHistory & SocietyScience & TechBiographiesAnimals & NatureGeography & TravelArts & CultureProConMoneyVideosseparation and purificationIntroductionGeneral principlesBasic concepts of separationsReasons for making separationsClassification of separationsSeparations based on equilibriaSeparations based on ratesParticle separationsSingle-stage versus multistage processesPrinciples of specific methodsEquilibrium separationsDistillationChromatographyExclusion and clathrationSupercritical-fluid methodsCrystallization and precipitationZone meltingRate separationsField separationsBarrier separationsParticle separationsSedimentationFiltration and screeningElutriationParticle electrophoresis and electrostatic precipitationFoam fractionation and flotationReferences & Edit HistoryQuick Facts & Related TopicsSciencePhysicsMatter & EnergyFacebookXhttps://www.britannica.com/science/separation-and-purificationseparation and purificationPrinciples of specific methodsBarry L. Karger
James L. Waters Professor of Analytical Chemistry; Director, Barnett Institute, Northeastern University, Boston. Coauthor of Introduction to Separation Science.Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....Historymoleculesmolecular sievesSize-exclusion chromatographytraversecalibratedmolecular weightcompoundsSupercritical-fluid methodsviscousSupercritical-fluid extractionCrystallizationcompounddissolvedprecipitationdifferentiatedchemical reactionsolublemasking agents
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