离子排斥色谱结合光度检测的水质监-省略-系统用于测定离子型营养物-英文-Dais

2012年7月Vol．30No．7July2012ChineseJournalofChromatography721～727ArticlesDOI:10．3724/SP．J．1123．2012．02033*Correspondingauthor:DaisukeKOZAKI．Tel:+81-82-424-6905，E-mail:Emerald．Green．2-10@hotmail．co．jp．Foundationitem:ThisstudywasfinanciallysupportedfromTOSOHCorporationandFellowshipsProgramforYoungScien-tistsoftheJapanSocietyforthePromotionofScienceonFY2011．Receiveddate:2012-02-22Waterqualitymonitoringsystemfordeterminationofionicnutrientsbyion-exclusionchromatographywithspectrophotometricdetectiononcation-andanion-exchangeresincolumnsusingwatereluentDaisukeKOZAKI1*，NobutakeNAKATANI2，MasanobuMORI3，NobukazuNAKAGOSHI1，KazuhikoTANAKA1，4(1．GraduateSchoolofInternationalDevelopmentandCooperation，HiroshimaUniversity，Higashi-Hiroshima739-8529，Japan;2．FacultyofEnvironmentalSystems，RakunoGakuenUniversity，Hokkaido069-8501，Japan;3．GraduateSchoolofEngineering，GunmaUniversity，Gunma376-8515，Japan;4．DepartmentofChemistry，TsinghuaUniversity，Beijing100084，China)Abstract:Aunifiedion-exclusionchromatography(IEC)systemformonitoringanionicandcationicnutrientslikeNH+4，NO－2，NO－3，phosphateion，silicateionandHCO－3wasdevelopedandappliedtoseveralenvironmentalwaters．TheIECsystemconsistedoffourIECmethodologies，includingtheIECwithultraviolet(UV)detectionat210nmfordeterminingNH+4onanion-exchangeseparationcolumninOH－formconnectedwithanion-exchangeUV-conversioncolumninI－formintandem，theIECwithUV-detectionat210nmfordeterminingsimultaneouslyNO－2andNO－3oncation-exchangesepara-tioncolumninH+form，theIECwithUV-detectionat210nmfordeterminingHCO－3oncation-exchangeseparationcolumninH+formconnectedwithanion-exchangeUV-conversioncolumninI－formintandem，andtheIECwithvisible-detectionbasedonmolybdenum-bluereactionfordeterminingsimultaneouslysilicateandphosphateionsoncation-exchangesepara-tioncolumninH+form．TheseIECsystemswerecombinedthroughthreemanually-driven6-portcolumnselectionvalvestoselecteachseparationcolumntodetermineselectivelytheionicnutrients．Usingthissequentialwaterqualitymonitoringsystem，theanalyticalperform