18%20液膜萃取技术在环境样品前处理中的应用

25220063FENXICESHIXUEBAO(JournalofInstrumentalAnalysis)Vol125No12126131,,(,300071):3:(SLME)(MMLLE),(HFLPME)3:;;;(SLME);(MMLLE);(HFLPME):O65812:A:1004-4957(2006)02-0126-06ApplicationofLiquidMembraneExtractionforEnvironmentalSamplePreparationFUXin2mei,DAIShu2gui,FUXue2qi(CollegeofEnvironmentalScience&Engineering,NankaiUniversity,Tianjin300071,China)Abstract:Areviewontheapplicationofliquidmembraneextractionforenvironmentalsampleprepara2tionispresented.Theextractiontechniquesaregeneralizedunderthreecategories:thesupportedliquidmembraneextraction(SLME)andmicroporousmembraneliquid-liquidextraction(MMLLE)basedonflatmembraneandtheliquidphasemicroextraction(HFLPME)basedonhollowfibermembrane.Thesetting2up,principlesandpracticalapplicationsofthesethreecategoriesforenvironmentalsampleprep2arationareintroduced,respectively.Keywords:Liquidmembraneextraction;Environmentalsample;Preparation;SLME;MMLLE;HFLPME,,,[1]3:(supportedliquidmembraneextraction,SLME)(microporousmembraneliquid-liquidextraction,MMLLE),(hollowfibre2basedliquidphasemicroextraction,HFLPME)-(liquid-liquidextraction,LLE)[2-4][2](solidphaseextraction,SPE),(1mL),,,,,,;,(GC)(HPLC)(CE)(AAS)(ICP),1(SLME)SLME1,:2005-04-15;:2005-06-21:(20377025):(1968-),,,;,,Tel:[phone],E-mail:sgdai@public1tpt1tj1cn©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,,,,SLME,,SLME,2SLME1SLMEFig11ThesettingupforSLME1.donorsolution();2.donorsolutionchannel();3.acceptorsolution();4.acceptorsolutionchannel,stagnant(,);5.flatmembrane()3MMLLEFig13SchematicdescriptionoftheMMLLEprinciple1.donorsolution,flowing(,);2.waste();3.acceptorsolution,stagnantorflowing(,);4.organicmembrane();N.analyte()-,pH,,,H+,,,,,,,,,2SLMEFig12SchematicdescriptionoftheSLMEprinciple1.basicdonorsolution,flowing(,);2.waste();3.acidicacceptorsolution,stagnant(,);4.organicmembrane();A.acidradicalion();B.basicmolecule();N.neutralmolecule(),SLME,pH,SLMESLME,2(MMLLE)MMLLESLME,,(),:-,,3MMLLE,(),,,MMLLE-,,,,MMLLEMMLLE,721©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.();2.collectionofacceptorsolution();3.donorsolution();4.magneticstirrer();5.hollowfibermembrane();B:1.10LGCsyringe(10LGC);2.donorsolution();3.hollowfibermembrane();4.acceptorsolution();5.magneticstirrer()3(HFLPME)HFLPMESLMEMMLLE,HFLPME,SLMEMMLLE,,4,14mL,0154mLHFLPME(600m,200m,012m0164m),,A:018mm,48cm,,,,200LB:,,HFLPME,,,,;HFLPME,,,,HFLPME,,SLME;HFLPME,,MMLLESLMEMMLLEHFLPME,125L,,,,,SLMEMMLLE,HFLPME,4411SLME([5-7],[8])([9-11])[9,12-14]([15-18]),MMLLE,[19][20]SLMEMMLLE,,[21]SLMEMMLLE,()()HFLPMESLMEMMLLE,,LPME[22-24],[23][24];[25-30],[25-26,28][28][29]412,(E)(Ee)[31-37]821©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=na/niEe=ca/ci=E(Vi/Va)nani,caci,VaViEEeSLMEE(Ee)K,(pH),,SLMEK(),,E,K,,,E,K,E[38],-(lgK)214313,E,lgK3130lgK2EE(Ee),,pHE(Ee),,,pHpKa23pH[9][9]SLME,pH110010,Ee5003000SLMEE(Ee)E,Ee[12-13,18],,,EeE(Ee)(,,),,E[17]SLME,1(22)(DEHPA),Cr()(Cr3+),2(Aliquat336)Cr()(HCrO-4CrO2-4Cr2O2-7),MMLLE,E(Ee)SLMEMMLLEEeK,K,Ee,,K,;K,,E,Ee2[39],MMLLE,,Ee2,Ee250,,,SLMEMMLLE,HFLPME,,,[40],,HFLPME,MMLLEKE(Ee),K,E,K,LPME[40],,HFLPME,HFLPMESLME,KpH()E(Ee),,[32];,pHpKa23,pHpKa23[32];,pH,HFLPME,,[32],,[41],HFLPME,100[32],(solidphasemicroextraction,SPME),HFLPME[29,42]921©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(g/L),100,3000[9],HFLPMEHFLPME,,[40]113Table1Applicationofliquidmembraneextractionforenvironmentalsamplespreparation3AnalytePretreatmentmethodDonorsolutionOrganicsolventinmembrancewallAcceptorsolutionAnalyticalmethodLimitofdetectionReferenceSLME1mol/LNaOH0.5mol/LH2SO4LC/UV0.1g/L[14]SLMEpH=9.2+TOPO0.015mol/LH2SO4LC/UV0.250.5ng/mL[21]MMLLEpH=6.2Cr()SLMEpH=7.0HNO3/Aliquat3360.75mol/LHNO3GFAASCr()0.01g/L[17]Cr()SLMEpH=3.0HNO3/DEHPA0.10mol/LHNO3Cr()0.12g/LMMLLE12/12/LC/UV0.75g/L[39]MMLLEGC-MS50890pg/g[20]HFLPMEpH=930%NaClGC-MS0.0020.04g/L[28]0.0130.06g/LHFLPMEGC-MS0.0050.1g/L[29]HFLPME0.1mol/LNaOH;20%NaCl;2%0.5mol/LHCl;0.5mol/LLC/UV0.050.1g/L[24]HFLPMEpH=1HCl0.1mol/LNaOHcLC/UV0.51.0ng/mL[23]3TOPO.(tri2n2octylphosphineoxide);Aliquat336.(methyltricaprylammoniumchloride);DEHPA.(22)(di2(22ethylhexyl)phosphoricacid);GFAAS.(graphitefurnaceatomicabsorptionspectroscopy)413HFLPME,,,SLMEMMLLE,,[43-44],,,(),,,[5,45-46],,,,,(ionicliquid)[47-49],,,[50]5,,,,,,,,031©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:[1],.[J].,2004,32(10):1389-1394.[2],.[J].,2003,22(3):106-109.[3],,,.[J].,2004,32(8):1047-1049.[4],,,.[J].,2004,32(3):329-331.[5]LIUJF,LIANGX,JIANGGB,etal.[J].AnalChimActa,2003,487:129-135.[6],.[J].,2003,31(5):594-597.[7]KNUTSSONM,MATHIASSONL,JONSSONJA.[J].Chromatographia,1996,42(3/4):165-170.[8]KNUTSSONM,NILVEG,MATHIASSONL,etal.[J].JChromatogr,A,1996,754:197-205.[9]CHIMUKAL,MEGERSAN,NORBERGJ,etal.[J].AnalChem,1998,70:3906-3911.[10]AUDUNSSONG