optima5300dv光谱定性和定量分析的化学计量学方法分析

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1、RESEARCHONCHEMON旺!TIUCSN住!THODSOFQUALITATIVEANDQUANTITATIVESPECTRALANALYSISWITHOPTIⅣ队5300DVABSTRACTICP—AESisoneoftheimportantmethodsofquantitativeandqualitativeanalysisfortraceimpuritiesinhi曲concentrationmatrix．Thispaperreviewsthecommonqualitativeanalyticalmethodsandquantitativemet

2、hodswhichcontainICP—AESspectralanalysis，spectralinterferenceeliminationandtheprecisionimprovement．ThecorrectinglimitationofdeterminationoftraceREimpuritiesinLa，CeandYbmatrixbyusingMSFandthemethodofPLSfordeterminationoftraceimpuritiesinhighconcentrationmatrixbyICP—AESwereinvestigate

3、drespectivelywithOptima5300DV．Inaddition，anqualititivemethodofcommonelementforOptima5300DVwasbuilt．Mainworkasfollows：1．Thedetectionlimitof228analyticallinesfor54elementsrespectivelyweremeasuredbyOptima5300DVandtheresultsofthedetertionlimitofradialandaxiallookdirectionwemeasuredwere

4、compared，alsothedetertionlimitformtheexpertdatabaseinOptima5300DV．Theresultsshowedthat，themostdetectionlimitofradiallookdirectioniSlowerthanthedatawhichfromtheexpertdatabase．thedetectionlimitofaxiallookdirectionisoneortwomagnitudelowerthanthatdata，just7analysislines’detectionlimiti

5、shigherthanthatdata．Inaddition，Themostdetectionlimitofaxiallookdirectionislowerthanthatofradiallookdirection，butforafewspectrallineswhichintherangeofmolecularband(NO、OH、NHandN2+)，thedetectionlimitofradial10(嫩directionisbetterthanthatofaxiallookdetection．IV矿。●，’∥}旷，2．AnMSFqualitativ

6、emethodofcommonelementsforOptima5300DVwerebuilt．Inthispart,MSFtechnologywasusedtocorrectthespectralinterference．Therelativestandarddeviation(RSD)orrelativestandarddeviation(ROwasusedasqualitativeanalysisparameters．Whentheconcentrationofthetestedelementsoverrunningtheinstrumentallim

7、itsofdetectionandRSD<100％orR6<67％，theelementexists．Usingthismethodtoanalysetheelementaryofstreamsediment(GBW07312)andsevenaollysamples，theanalyticalaccuracyisover95％．3．ThespectralinterferenceontheREimpuritiescausedbyLa，CeandYbmatrixwereinvestigatedrespectivelywimOptima5300DV．Within

8、thespectrumwindowsofREimpu