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1、OrganicGeochemistry95(2016)21–28ContentslistsavailableatScienceDirectOrganicGeochemistryjournalhomepage:www.elsevier.com/locate/orggeochemGroup-typecharacterizationofcrudeoilandbitumen.PartI:Enhancedseparationandquantificationofsaturates,aromatics,resinsandasphalten
2、es(SARA)a,⇑a,b,⇑aaabK.K.(Adry)Bissada,JingqiangTan,EwaSzymczyk,MikeDarnell,MeiMei,JunpingZhouaCenterforPetroleumGeochemistry,DepartmentofEarthandAtmosphericSciences,UniversityofHouston,TX77204-5507,UnitedStatesbStateKeyLaboratoryofCoalMineDisasterDynamicsandControl
3、,ChongqingUniversity,Chongqing,400044,ChinaarticleinfoabstractArticlehistory:Compositionalanalysisofcrudeoilsisveryimportantalongtheentirevaluechainoftheoilindustry,Received14October2015fromupstreamtomidstreamanddownstreamoperations.Anessentialstepofthisanalysisist
4、oseparateReceivedinrevisedform19January2016crudeoilintofractionsofsaturatehydrocarbon(saturates),aromatichydrocarbon(aromatics),resins,Accepted10February2016andasphaltenes(SARA).ThoughanumberofmethodshavebeendevelopedforSARAseparation,tradi-Availableonline16Februar
5、y2016tionalmethodsinvolvesignificantdrawbacksthatinclude,butarenotlimitedto,inconsistentresultsamonglabsandmethods,extensivecross-contamination,andpooranalyticalprecision.Here,wereportKeywords:onanovelautomatedmulti-dimensionalhighperformanceliquidchromatography(AMD
6、-HPLC)SARAseparationapproachtoenhancegroup-typecharacterizationofcrudeoilorbitumen.TheAMD-HPLCsystemisfullyOilgroup-typecharacterizationHighperformanceliquidchromatographyautomatedanddevelopedbasedonacombinationofadsorptionandpartitionchromatography.ItisCrudeoil/bi
7、tumencompositionequippedwithacyanocolumnandasilicacolumn.EachsetofSARAcolumnsisconnectedinseriesviamulti-positionvalvesthatallowagivencolumntobeinserted‘‘in”ortobebypassed‘‘out”oftheflowpathofthemobilephaseatpre-settimesintheprocess.Inpractice,abitumenoroilsampleof0
8、.02gisdissolvedinasolventmixtureof15%methanol,15%acetone,and70%chloroform,andinjectedintotheinstrument.Thesampleisfractionatedintothefourgroupsby
