【英文标准名称】:Samplingandanalysisofiron,steelandotherferrousmetals-Methodsofanalysis-Determinationofcalcium-Steel:flameatomicabsorptionspectrometricmethod
【原文标准名称】:铁,钢和其他黑色金属抽样与分析.第3部分:分析方法.第7节:钙含量测定.第1小节:钢:火焰原子吸收光谱法
【标准号】:BS6200-3.7.1-1987
【标准状态】:现行
【国别】:英国
【发布日期】:1987-07-31
【实施或试行日期】:1987-07-31
【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;精密度;再现性;分光光度法;钢;钙;化学分析和试验;非合金钢;含量测定;合金钢;氧化法;低合金钢;火焰光度测定法;原子吸收分光光度测定法;吸收分光光度测定法;试验条件;铁类合金
【英文主题词】:Alloy-treated;Analysis;Atomicabsorptionspectrometry;Atomicabsorptionspectrophotometry;Calcium;Chemicalanalysisandtesting;Determinationofcontent;Flamephotometry;Flamespectroscopy;Low-alloysteels;Materials;Materialstesting;Metals;Steels;Testing;Unalloyed;Unalloyedsteels
【摘要】:ThisEURONORMspecifiesamethodforthedeterminationofcalciuminsteelsbymeansofflameatomicabsorptionspectrometry.Themethodisapplicabletonon-alloyandlow-alloysteelswithcalciumcontentsgreaterthan0.0002%(m/m).NOTE-Themethodhasalsobeensuccessfullyappliedtoahighlyalloyedsteelwithappropriatemodificationofthecali-brationsolutionstocontaintheprincipalalloyingelementsinconcentrationssimilartothoseinthesampletobeanalysed(seeAnnex).
【中国标准分类号】:H11
【国际标准分类号】:77_040_30
【页数】:12P;A4
【正文语种】:英语


【英文标准名称】:Bindersforpaints-Gelpermeationchromatography(GPC)withtetrahydrofuran(THF)aseluent
【原文标准名称】:涂料粘合剂.用氢呋喃作为洗脱剂的凝胶渗透色谱法(GPC)
【标准号】:BS6782-14-1999
【标准状态】:作废
【国别】:英国
【发布日期】:1999-03-15
【实施或试行日期】:1999-03-15
【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】:统计方法分析;化学分析和试验;控制样品;分子量;试样制备;含量测定;方程;数据处理;试样;清漆;试验设备;涂料;有机覆层;报告;精密度;粘合剂;图解法;色谱法;高聚物;凝胶色谱法;技术数据单;校正;平均;再现性
【英文主题词】:Apparatus;Bindingagents;Calibration;Chemicalanalysisandtesting;Chromatograms;Chromatography;Coatingmaterials;Coatings;Definition;Definitions;Determinationofcontent;Gelpermeationchromatography;Gels;GPC;Highperformanceliquidchromatography;HPLC;Investigations;Liquidchromatography;Measurement;Molarmass;Paints;Permeation;Plastics;Polymers;Specimenpreparation;Testequipment;Testing;Tetrahydrofuran;Varnishes
【摘要】:ThispartofISO13885isoneofaseriesofstandardsdealingwiththesamplingandtestingofpaints,varnishesandrelatedproducts.Itdescribesconditionsforthedeterminationofthemolecular-massdistribution,number-averagemolecularmassMnandmass-averagemolecularmassMwofpolymersthataresolubleinTHF(tetrahydrofuran)bygelpermeationchromatography(GPC).Itispossiblethat,inspiteofthegoodrepeatabilityobtainedwiththismethod,itcannotbeusedwithcertainpolymertypesbecauseofspecificinteractions,suchasadsorptionwithinthesample/eluent/columnsystem.Themethodisnotanabsoluteoneandrequirescalibrationwithcommerciallyavailableunbranched-polystyrenestandardsthathavebeencharacterizedbyabsolutemethods.Theresultsforsamplesofpolymersotherthanpolystyrenearethereforeonlycomparablewithingroupsofsamplesofthesametype.TheconditionsspecifiedinthispartofISO13885arenotsuitablefortheGPCanalysisofpolymersampleswithMwvaluesgreaterthan10(seeannexA).Nocorrectionmethods,e.g.fortheeliminationofpeakbroadening,areincludedinthispartofISO13885.Ifabsolutemolecular-massvaluesarerequired,anabsolutemethod,e.g.membraneosmometryforMnorlightscatteringforMw,mustbeused.note:1)Alsoknownassizeexclusionchromatography(SEC).
【中国标准分类号】:G38
【国际标准分类号】:87_060_20
【页数】:32P;A4
【正文语种】:英语