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1、MagneticIn-TubeSolidPhaseMicroextractionY.Moliner-Martínez†,HelenaPrima-Garcia‡,AntonioRibera‡,EugenioCoronado‡,andP.Campíns-Falcó*††DepartamentodeQuímicaAnalítica,FacultaddeQuímica,UniversidaddeValencia,Dr.Moliner50,E46100−Burjassot,Valencia,España‡InstitutodeCienciaMolecular
2、(ICMol),UniversidaddeValencia,CatedráticoJoséBeltrán2,E46980−Paterna,Valencia,EspañaAnal.Chem.,2012,84(16),pp7233–7240DOI:10.1021/ac301660kPublicationDate(Web):July30,2012Copyright©2012AmericanChemicalSocietyAbstractWereportanewin-tubesolidphasemicroextractionapproachnamedmagn
3、eticin-tubesolidphasemicroextraction,magnetic-IT-SPME.Magnetic-IT-SPMEhasbeendeveloped,takingadvantageofmagneticmicrofluidicprincipleswiththeaimtoimproveextractionefficiencyofIT-SPMEsystems.First,amagnetichybridmaterialformedbyFe3O4nanoparticlessupportedonSiO2wassynthesizedand
4、immobilizedinthesurfaceofabaredfusedsilicacapillarycolumntoobtainamagneticadsorbentextractionphase.Thecapillarycolumnwasplacedinsideamagneticcoilthatallowedtheapplicationofavariablemagneticfield.Acetylsalicylicacid,acetaminophen,atenolol,diclofenac,andibuprofenweretestedastarg
5、etanalytes.Theapplicationofacontrolledmagneticfieldresultedinquantitativeextractionefficienciesofthetargetanalytesbetween70and100%.Theseresultsdemonstratedthatmagneticforcessolvethelowextractionefficiency(10–30%)ofIT-SPMEsystems,whichisoneoftheirmaindrawbacks.我们报告一个新的管固相微萃取方法，
6、命名为磁管固相微萃取。Magnetic-IT-SPME已经被开发出来,利用磁性微流控原则,目的是提高IT-SPME系统的萃取效率。
