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【英文标准名称】:Specificationforhardmetals-DeterminationofcontentsofmetallicelementsbyX-rayfluorescence-Solutionmethod
【原文标准名称】:硬质合金规范.用X射线荧光分析法对金属元素含量的测定.溶液法
【标准号】:BSEN24883-1993
【标准状态】:现行
【国别】:英国
【发布日期】:1993-06-15
【实施或试行日期】:1993-06-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:校正;碳化物;成份允差;锆;锰;钴;硬质合金;钽;烧结产品;含量测定;铌;混合物;铁;钒;镍;试样制备;钨;钛;试验条件;X射线荧光光谱法;金属;钼;合金;化学成分;粉末冶金
【英文主题词】:Carbides;Chemicalanalysisandtesting;Cobalt;Determinationofcontent;Elements;Hardmetals;Iron;Manganese;Materials;Metals;Molybdenum;Nickel;Niobium;Powdermetallurgy;Solutions;Spectrophotometry;Tantalum;Testing;Titanium;Tungsten;Vanadium;X-rayfluorescencespectrometry;Zirconium
【摘要】:ThisInternationalStandardspecifiesanX-rayfluorescencesolutionmethodforthedeterminationofcobalt,iron,manganese,molybdenum,nickel,niobium,tantalum,titanium,tungsten,vanadiumandzirconiumcontentsofcarbidesandhardmetals.
【中国标准分类号】:H72;H10
【国际标准分类号】:77_160
【页数】:12P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodsforLowConcentrationsofDiethlyeneGlycolinEthyleneGlycolbyGasChromatography
【原文标准名称】:用气相色谱法对乙二醇中低浓度二甘醇的标准试验方法
【标准号】:ASTME611-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:E15.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:含量测定;试验;色谱法;化合物;二甘醇;乙二醇
【英文主题词】:diethylenegylcol;ethyleneglycol;gaschromatograph
【摘要】:Eithertestmethodmaybeusedtodeterminetheconcentrationsofdiethyleneglycolinethyleneglycol.Theconcentrationsofthecomponentsareobtainedbyanormalizationtechnique,basedontheassumptionthatallcomponentsareelutedundertheconditionsused.Ifallcomponentsshouldnotbeeluted,thecalculatedconcentrationswillbeerroneouslyhigh,withthemajorcomponentshowingthemostsignificantabsoluteerror.Sincewaterisnotdetectedbytheseprocedures,theresultsareonawater-freebasis.WatermaybedeterminedinaccordancewiththeapplicablesectionsofTestMethodsE202andthegaschromatographicresultscorrectedforthewaterconcentration.Bothtestmethodsarecurrentlyinindustrialuse.TestMethodAisthesimplerofthetwotestmethodsbecauseitdoesnotrequirethepreparationofderivativespriortogaschromatographicanalysis.TheresultsobtainedbyTestMethodAareslightlymoreaccuratethanthoseobtainedbyTestMethodB.Withrespecttoprecisionthereisnosignificantdifferencebetweenthetwotestmethods.TestMethodBhasbeenreportedtobesuitablealsofortheanalysisofawidevarietyofglycolethers,butthisuseisbeyondthescopeofthisstandard.1.1Thesetestmethodsareintendedprimarilyfortheanalysisofmixturesofethyleneanddiethyleneglycolsinwhichthediethyleneglycolconcentrationis0.1%orless.Bothtestmethodsshouldbeapplicabletohigherconcentrationsofdiethyleneglycol,butprecisionandbiasestimateshavebeenobtainedonlyfor0.05to0.1%diethyleneglycol.Note1TestMethodsE202describeanothergaschromatographictestmethodapplicabletomixturesofethylene,diethylene,andtriethyleneglycolsandmixturesofpropylene,dipropylene,andtripropyleneglycolsinwhichoneoftheglycolsistheprincipalcomponentandtheothertwoarepresentinconcentrationsof0.1to1%each.1.2Thetwotestmethodsaregivenasfollows:SectionsTestMethodA-NonderivativeMethod5to13TestMethodB-DerivativeMethod14to22