激光诱导击穿光谱技术分析岩石和煤样品

,2009,29(1):30234MetallurgicalAnalysis,2009,29(1):30234:1000-7571(2009)01-0030-05,,,,(,100044):(LIBS)1064nmNd:YAG,011nm,LIBS,,;SiI(25116nm),,,Si,Si,:;;;:O657131:A:2008-09-30:(1960-),,,,;Tel:[phone],E2mail:jshwang@bjtu1edu1cn(LIBS),,,LIBS,[1-5]LIBS,SallBatrice[6],,[7],[8][9]LIBS,,LIBS,[10]LIBS,,LIBS,Si,11,Nd:YAG(BigSkyLaser),110Hz,10ns,1064nm,440mJ,f=20mm,,f=50mm(AvaSpec22048FT,Avantes),200500nm,011nm,,03,,,..,2009,29(1):302341Fig11Schematicdiagramoftheexperimentalset2up2211,,(),:20mJ,1Hz,3s2220320nm(AB)Fig12LIBSspectraoftworocksamplesin220-320nm(Fig1A,Fig1B),,,,2220320nm2A,,;,;,,,2B,,,;,,,,212,LIBS,,5:(GBW07103),(GBW07105),(GBW07108),(GBW07109)(GBW07112),1#5#,:24mJ,1Hz,3s,,,,3,Si,SiI(25116nm)13WANGJia2sheng,LUYun2zhang,LIWei2lin,etal.Laser2inducedbreakdownspectroscopictechniqueforanalyzingrockandcoalsamples.MetallurgicalAnalysis,2009,29(1):3023431#3#(SiI25116nm)Fig13Spectraofsample1#and3#(SiIlineat25116nm),6,(),,RSD(1)1#,2#,3#,4#5#,logI/logC,SiI(251.6nm),41SiI(25116nm)Table1DataofspectralintensityofSiI(line25116nm)Sample1#2#3#4#5#Intensity372827202028302825783753283819303868242636643126186834062839411028331862355527373755285622603751274237623352187434682956Averageintensity379513295412197013351217271310RSD(%)01040108010801080107Sicontent(w/%)331992018371282514216166logC1153111319018621140511222logI31579314703129531546314334SiI(25116nm)Fig14Logarithmicrelationbetweenthecharac2teristicspectralintensityanditscontentofSiI(line25116nm)4,Si(25116nm),,Si,,,,,LIBS,23,,,..,2009,29(1):30234213,,32mJ,5s,LIBS55,,25200500nmLIBSFig15LIBSspectraofcoalin200-500nm2Table2CharacteristicspectrallinesofsomeelementsincoalsampleElement(nm)CharacteristicspectrallinesC247186,60113,60915,60919,74713,74716,78611H65613O61516,61517,62114,65615,65711,67117,67211,70012,72517,77712,77715N61618,64815,64911,65010,65915,67010,67015,67016,67019,67213,77217S67413,67418,67419,67517,76816,76916Ca37317,39314,39618,42217,43013,43018Si251.6,28811,39016,41218,41311Mg38312,38318,44218,44314,51814Al39414,39611Fe36812,27310,37210,37315,37416,37418,38116Ti36416,36515,37611,39516,39518,39919,,Mg,FeAlC247186nm,H,O,N,S500nm,,SiTiU,Sr,Ba,Ni,Co,Rh,,(30mJ),LIBS,,,3LIBS,,,,,,,,LIBS;Si,33WANGJia2sheng,LUYun2zhang,LIWei2lin,etal.Laser2inducedbreakdownspectroscopictechniqueforanalyzingrockandcoalsamples.MetallurgicalAnalysis,2009,29(1):30234,LIBS:[1]SunQ,TranM,SmithBW,etal1DeterminationofMnandSiinironorebylaser2inducedplasmaspec2troscopy[J]1AnalyticaChimicaActa,2000,413(1):1872195.[2]ZhangHS,YuehFY,SinghJP1Laser2inducedbreakdownspectroscopyasamultimetalcontinuous2emissionmonitor[J]1AppliedOptics,1999,38(9):145921466.[3]BustamanteMF,RinaldiCA,FerreroJC1Laserin2ducedbreakdownspectroscopycharacterizationofCainasoildepthprofile[J]1SpectrochimicaActaPartB,2002,57(1):3032309.[4]CarranzaJE,FisherBT1On2lineanalysisofambientairaerosolsusinglaser2inducedbreakdownspectros2copy[J]1SpectrochimicaActaPartB,2001,56(2):8512856.[5]YoonY,KimT,YangM,etal1Quantitativeanaly2sisofpotteryglazebylaserinducedbreakdownspec2troscopy[J]1MicrochemicalJournal,2001,68(1):2512256.[6]SalleB,LacourJ2L,VorsE,etal1Laser2inducedbreakdownspectroscopyforMarssurfaceanalysis:capabilitiesatstand2offdistancesanddetectionofchlorineandsulfurelements[J]1SpectrochimicaActaPartB,2004,59(9):141321422.[7]DeathDL,CunninghamAP,PollardLJ1Multi2ele2mentanalysisofironorepelletsbylaser2inducedbreakdownspectroscopyandprincipalcomponentsre2gression[J]1SpectrochimicaActaPartB,2008,63(7):7632769.[8],,1[J]1()(JournalofSouthChinaUniversityofTechnology:NaturalScienceEdition),2007,35(10):1852193.[9],,,1[J]1(SpectroscopyandSpectralAnalysis),2008,28(1):2002202.[10],1[J]1(ChinaScienceandTechnologyInformation),2007,9:21222.[11]FichetP,TabarantM,SalleB,etal1ComparisonbetweenLIBSandICP/OES[J]1Anal1Bioanal1Chem1,2006,385(2):3382344.[12]BousquetB,SirvenJB,CanioniL1Towardsquanti2tativelaser2inducedbreakdownspectroscopyanalysisofsoilsamples[J]1SpectrochimActaPartB,2007,62(12):158221589.[13],”,,1[J]1(JournalofAtomicandMolecularPhysics),2007,24(1):25230.Laser2inducedbreakdownspectroscopictechniqueforanalyzingrockandcoalsamplesWANGJia2sheng,LUYun2zhang,LIWei2lin,QIAODong2po,TANGYing(SchoolofScience,BeijingJiaotongUniversity,Beijing100044,China)Abstract:Rockandcoalsampleswithdifferentelementalcompositionsandbulkdensitieswereana2lyzedbylaser2inducedbreakdownspectroscopic(LIBS)technique.TheLIBSsystemwasmainlymadeupofapulsedNd:YAGlaserwithanoperatingwavelengthof1064nm,asamplestageandaminia2turespectrometerwithaspectralresolutionof0.1nm.LIBSsignalscollectedbythespectrometerwerespectrallyresolvedandprocessedbyacomputer.Throughqualitativeanalysis,rocksamplesofunknownvarietyweresimplyclassifiedonthebasisofcharacteristiclinesofsomeelementsintheLIBSspectra.TheSiIlines(251.6nm)wereusedtoanalyzesiliconcomponentsinstandardrockpowdersamples.Agoodlogarithmiclinearitybetweentherelativespectralintensitiesandtheelementcontentswasfound,whichcanserveasthecalibrationcurveforSitodetermineSicontents.Similarprocedurecanbeappliedtoanalyzeotherelementsinthesam