2023年全國碩士研究生考試考研英語一試題真題（含答案詳解+作文范文）_第1頁
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1、DeterminationofTraceElementsinSteelbyhighsensitivityinductivelycoupledplasmamassspectrometrywithoutmatrixseparationNIELingqing1JIHongling1CHENYingying1LIUXiaoping1WANGYangping2（1.BaosteelResearchInstituteShanghai201900Ch

2、ina2EastChinaUniversityofScienceTechnology200237China）Abstract:Inconnectionwithincreasingqualitydemsinsteelsteelproductiondecreasingchemicalanalysisofthesetraceelementsdowntotheｕggrangeisincreasingimptant.Inourstudyafast

3、preciseaccuratemultielementsdeterminationmethodftraceelementsBAlPPbSnSbAsBiintherangeofμgg1subμgg1insteelhasbeenestablishedbyhighsensitivityinductivelycoupledplasmamassspectrometry(HRICPMS)withoutanymatrixseparationanyin

4、ternalstard.IthasgoodprecisionlowlimitofdetectionwithRSD5%LOD0.01μgg1fmostelements.Themeasuredvaluetalliedwiththestardvalve.Therecoveryissatisfied.Keywds:HRICPMSsteeltraceelementswithoutmatrixseparation0IntroductionThepr

5、opertiesqualityofsteelareamongotherthingsaffectedbytramptraceelementswhichareeitheraddedduringthesteelmakingprocesspresentasimpuritiesiginatingfromtherawmaterials1.someelementssuchasPbareunwholesometous.Inconnectionwithi

6、ncreasingqualitydemsinsteelsteelproductiondecreasingchemicalanalysisofthesetraceelementsdowntotheｕggrangeisofincreasingimptant2.InrecentyearsHRICPMShasbeenemployedtodeterminingtraceanalysisinvariousfields.Inironsteelfiel

7、dsomepaper34repteddeterminingoftraceamountsofelementsinhighpurityironsteelafterseparatingtheironmatrixbyexchangechromatographybysolidphaseextractionInsomeresearch5traceelementswereanalyzedusingmatrixmatchedstardsolutionc

8、alibrationinternalstard.1EXPERIMENTAL1.1InstrumentationTheICPMSusedinourstudywasElement2(FinniganMATBremenUSA).TheconditionsfICPMSweredailyoptimized.Sotheconditionsspecialtchpositiongasflowwerealittledifferentdaily.Themi

9、crowaveusedinthisstudywasMDS2100(CEMUSA).TheconditionsfGenerallymatrixeffectswerecoursedbyalargeamountofFecomplexcompositionofsteelwhereastheextentofinfluenceisdifferentfromdifferentinstrument.Inourstudyonlyafewminuteswe

10、reneededinourexperimentalprocesscommonlymatrixeffectsareinconspicuousfmostelements(2ngg1)under100μgg1matrixwhenusingshtinjectingtimeasshowninFig.1.Ontheotherhthehigherconcentrationofmatrixistheeasiliertheconeificeisclogg

11、edbydepositofdissolvedmetaloxidesinsolutions.Sowechoose100μgg1matrixwithoutanyinternalstardastheanalyticalsolutioninourstudy.Fig.1signalvarietyfcontinueinjectingtimeIndertovalidateourconclusionthefunctionofinternalstarde

12、lementswasstudy.WedeterminedofBwithwithoutinternalstard.Asshownintable2therewasn’tanyconspicuousdifferencebetweenthedatafrom“withoutinternalstard”methodthedatafrom“withinternalstard”method.Table2themeasurevalueofBwithwit

13、houtinternalstardelement2.3LimitofdetectionRecoveryThelimitofdetectioninsolutionwascalculatedonthebasisofstarddeviationofelevensuccessivemeasurementsofblanksolutioncalculatingasthefollowingfmula(1).Table3showstheLODofmos

14、telementsisunder0.01μgg1inmassexceptPwiththeLODof0.144μgg1perhapspartlyaccdingtolowintensityofit.Recoveryyieldsoftraceelementswereexaminedby1ugg5ugg10ugg50uggofstardsolutionintosamplescontainingveryfewinterestingtraceele

15、ments.Asdemonstratedintable3therecoveryoftraceelementsofsteelswassatisfied.CRMBwithoutISBwithISYBwithISBeCertifiedvalueGBW013230.00230%0.00231%0.00227%0.0023%GBW013270.00094%0.00098%0.00102%0.001%020000040000060000080000

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