ASTM E1588-2010e1 扫描电子显微术/能量散射X射线光谱法射击残留物分析的标准指南

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【英文标准名称】:StandardGuideforGunshotResidueAnalysisbyScanningElectronMicroscopy/EnergyDispersiveX-raySpectrometry
【原文标准名称】:扫描电子显微术/能量散射X射线光谱法射击残留物分析的标准指南
【标准号】:ASTME1588-2010e1
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E30.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:energydispersiveX-rayspectrometry;forensicscience;gunshotresidue;scanningelectronmicroscopy;Energy-dispersivespectroscopy(EDS);Guns;Gunshotresidue(GSR);Residue;Scanningelectronmicroscope(SEM)
【摘要】:ThisdocumentwillbeofusetoforensiclaboratorypersonnelwhoareinvolvedintheanalysisofGSRsamplesbySEM/EDS(4).SEM/EDSanalysisofGSRisanon-destructivemethodthatprovides(5,6)bothmorphologicalinformationandtheelementalprofilesofindividualparticles.Particleanalysiscontrastswithbulksamplemethods,suchasatomicabsorptionspectrophotometry(AAS)(7),neutronactivationanalysis(NAA)(8),inductivelycoupledplasmaatomicemissionspectrometry(ICP-AES),andinductivelycoupledplasmamassspectrometry(ICP-MS),wherethesampledmaterialisdissolvedorextractedpriortothedeterminationoftotalelementconcentrations,therebysacrificingmorphologicalinformationandindividualparticleidentification.X-rayfluorescencespectrometry(XRF)isatechniquethathasbeenusedtomaptheplacementanddistributionofGSRparticlessurroundingbulletholesinordertoestablishshootingdistances(9).Unlikethesolution-basedbulkmethodsofanalysis,XRFisnon-destructive;however,XRFstilldoesnotprovidemorphologicalinformationandisincapableofindividualGSRparticleidentification.1.1Thisguidecoverstheanalysisofgunshotresidue(GSR)byscanningelectronmicroscopy/energy-dispersiveX-rayspectrometry(SEM/EDS)bymanualandautomatedmethods.Theanalysismaybeperformedmanually,withtheoperatormanipulatingthemicroscopecontrolsandtheEDSsystemsoftware,orinanautomatedfashion,wheresomeamountoftheanalysisiscontrolledbypre-setsoftwarefunctions.1.2Sincesoftwareandhardwareformatsvaryamongcommercialsystems,guidelineswillbeofferedinthemostgeneraltermspossible.Forproperterminologyandoperation,consulttheSEM/EDSsystemmanualsforeachsystem.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C04
【国际标准分类号】:11_020
【页数】:5P.;A4
【正文语种】:英语