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MC-ICPMS

By Edwin Carter,2014-12-15 02:22
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MC-ICPMS

    MC-ICPMS

    FUNDAMENTALANDAPPLIEDFUNDAMENTALRESEARCH?Radiochemistryan

    dNuclearChemistry207

    DeterminationofPlutoniuminEnvironmentalSamples

    byID?-MC?-ICPMS

    ZHULiuchao,WANGTongxing,ZHAOYonggang,ZHANGJilong

    AmethodfordeterminationoftraceplutoniuminenvironmentalsamplesbyID

    ICPMSwas

    establishedinthelaboratory.ThecontentofplutoniuminallIAEAconferencematerialIAEA368was

    determinedbythemethod.

    Sextuplesamplesandthe2puspikewereweighedintocrucibles.

    Afterashingat600?.the

    sampleswereleachedbynitricacid.Plutoniumintheleachingsolutionwasseparatedandpurifiedby

    TBPandTOAextractionchromatographiccolumn.

    TheoperatingparametersoftheMC

    ICPMSwereoptimizedbyusinga10Pg?g_.Pusolution.The

    massbiaswascorrectedbyplutoniumisotopestandardsolution.Thedeterminedconcentrationof

    plutoniuminIAEA

    368is(12.74_+0.51)Pg?g_.,whichagreedwellwiththevaluededucedfromthe referencevalue.

    InterComparisononIsotopicAbundanceMeasurementofNeodymium

    JIANGXiaoyan,ZHAOYonggang,LILili,ZHANGJilong,WANGTongxing

    Theconsistencybetweentheexperimentalresultsandthereferencevalueareindicatedby repeatabilityandreproducibility.Tl1eintercomparisonmeasurementsareoftenadoptedtoe

valuatethe

    repeatabilityandreproducibility.Thepurposeofintercomparativeexperimentsistovalidatethe

    experimentalresultscomingfromthe1aboratorieswhichhaveioinedtheexperimentsandtoevaluate

    theabilityandthelevelofthevariouslaboratories.

    AnintercomparisononisotopicabundancemeasurementsofneodymiumhadbeenperformedbV

    MCICP-MS.TheoperatingparametersfordeterminingtheabundanceratioofNdbyMCICPMS

    werestudiedandoptimizedbyNdreferencemateria1.Faradaycupswereusedtoreceivethesignalsof

    sevenisotopesofNd.ThemassbiasandKfactorhadbeencalculatedandemendatedbymeasuringthe

    isotopicraftoof2Nd/d,

    .N(1/d

    ,

    Nd/4Nd,46Nd/4Nd,Nd/d,~Na/44NdinNd

    referencemateda1.TheisotopicratioofNdinsampleshadbeencalibratedbyKfactorandthefinal

    isotopeabundanceofNdinsampleshadbeenobtained.Theuncertaintyoftheresultshadbeen evaluatedandlistedintheTable1.Theresultsshowedthehighprecisionandthesatisfiedrepeatability.

    Table1ResultsofabundanceofNdisotope

    IsotopeIsotopeabundanceExpanduncertainty(K=2)IsotopeIsotopeabundanceExpanduncertainty(K=2)

    2NdO.256350.000196Nd0.16250O.00011

    Nd0.1151010.000073lSNdO.0543320.000058

    d0.279930.00014oNd0.0531570.000076

    5Nd0.078633O.000050

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