Studies on the Element Characteristics of Nephrite Minerals from Different Deposits by GD-MS.pdfVIP
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Studies on the Element Characteristics of Nephrite Minerals from Different Deposits by GD-MS.pdf
FULLPAPER
StudiesontheElementCharacteristiCsofNephriteMinerals
frOm DifferentDepositsbyGD-MS
Siqinbilige(斯琴毕力格) Qian,Rong (钱荣) Zhuo,Shangjun (卓尚军)
Gan,Fuxi。(干福熹)
“ShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciences,Shanghai201800,China
ShanghaiMassSpectrometryCenter,ShanghaiInstituteofCeramics,
ChineseAcademyofSciences,Shanghai200050,China
FudanUniversity,Shanghai200433,China
Elementcharacteristicsofnephritemineralsweredeterminedbyglowdischragemassspectrometry(GD—MS)
throughsurfaceadherencemethOd.TOsolvetheconductivityproblem ofnon—conductivenephritesamples,highpu—
rityindium pin(99.9999%)wasusedasdischragehost.Duringtheprepraationprocedure,asmallpieceofneph—
ritesamplewasgroundintopowder(about200meshes),andthenthesamplepowderwascoatedonthesurfaceof
indium pintoform arodsample.Typica1elementsofnephritemineralswereanalyzedbvGD—MS,andhterelative
standraddeviationsshowedthatthestabilityandreproducibilityofthismehtodweregood.M eanwhile,fourneph—
ritesamplesfromtwodifferentdepositswerefurtherstudiedbvmismethod.TheGD—MSresultsofmajorelements
andtraceelementsrevealedhtattypicalelementsofthenephritemineralsfrom samedepositweresimilra,andthose
from differentdepositsexhibitedsignificantdifference.Inaddition,resultsofexternal—bema protoninducedX—ray
emissionfPIXE wereconsistentwiththeresultofGD—MSdetermination.Thepresentapproachhadbeenprovento
besimple.emcienttoperform therapidscreeningandmulti—elementsemi—quantitativeanalysisofnephritesamples.
Keywords glow discharge,masssp
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