The separationbehaviourof 90Y from 90Sr wasinvestigatedbydiluentvariationusingsolventextraction
and supportedliquidmembranetechniquesemployingN,N,N0,N0-tetra-2-ethylhexyldiglycolamide
(T2EHDGA)astheextractant.BothDY (distributionratioofY(III))andS.F.(separationfactor)were
foundtobehighinthesolventextractionstudieswhenchloroformwasusedasthediluent.Subsequent
supportedliquidmembrane(SLM)studiesusingPTFEflatsheetmembranescontaining0.2MT2EHDGA
in variousdiluentsindicatedthetrendofYtransportasxylene4hexone4chloroform4carbon
tetrachloride4n-dodecaneþ30% iso-decanolmixture.However,theSr(II)transportrateswerealso
high withxylene,hexone,andcarbontetrachlorideasthediluentswhichledustocarryoutsubsequent
studiesusingchloroformand n-dodecaneþ30% iso-decanolmixture.Acidvariationstudiesinchloro-
form systemindicatedaninterestingphenomenaofincreasingY(III)transportanddecreasingSr(II)
transportwithincreasingacidconcentration.Separationof 90Y fromamixtureof 90Sr and 90Y wasalso
attempted.