ASTM E 1821-2008 用气相色谱法测定生物物质中碳水化合物的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminationofCarbohydratesinBiomassbyGasChromatography
【原文标准名称】:用气相色谱法测定生物物质中碳水化合物的标准试验方法
【标准号】:ASTME1821-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:生物物质;气相色谱法;烃类;土壤学;测试
【英文主题词】:Biomass;Gaschromatography;Hydrocarbons;Soilscience;Testing
【摘要】:1.1Thistestmethoddescribesthedeterminationofstructuralcarbohydratespresentinabiomasssample,expressedasthepercentmassofanoven-driedsamplebasisofeachanhydrosugar.1.2Samplematerialssuitableforthisprocedureincludehardandsoftwoods,herbaceousmaterials,suchassericeaandswitchgrass,agriculturalresidues,suchascornstover,wheatstraw,andbagasse,wastepaper,suchasboxboard,officewaste,andnewsprint,acidoralkaline-pretreatedbiomass,washedfreeofanyresidualacidoralkali,andthesolidfractionoffermentationresidues.1.3Theoptionsforthetypesofsamplestobeanalyzedinthisprocedureare:1.3.1PreparedBiomassSamples:1.3.1.1AirDriedMaterial—Resultsarereportedasthepercentbymass,basedontheoven-driedmassoftheair-driedsample.1.3.1.245°CDriedMaterial—Resultsarereportedasthepercentbymass,basedontheoven-driedmassofthe45°Cdriedsample.1.3.1.3FreezeDriedMaterial—Resultsarereportedasthepercentbymass,basedontheoven-driedmassofthefreezedriedsample.1.3.2Extractives-FreeSample—Resultsarereportedasthepercentbymass,basedontheoven-driedmassoftheextractedsample.1.4Thisstandardmethodisgenerallynotsuitableforsamplesthatcontainsoluble,nonstructuralcarbohydratesunlesstheyareremovedpriortoanalysis.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SeeSection8forspecifichazardsstatements.
【中国标准分类号】:
【国际标准分类号】:65_040_20
【页数】:8P;A4
【正文语种】:英语


Product Code:SAE AMS5556
Title:Steel, Corrosion and Heat-Resistant, Seamless or Welded Hydraulic Tubing 18Cr - 11Ni - 0.70Cb (SAE 30347) Solution Heat Treated
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat resistant steel in the form of seamless or welded and drawn tubing.【英文标准名称】:MachineTools;PressBrakes;AcceptanceConditions
【原文标准名称】:机床.第2部分:压力机制动器.验收条件
【标准号】:DIN55222-2-1980
【标准状态】:作废
【国别】:德国
【发布日期】:1980-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:验收条件;验收规范;设计;压弯机;平整度;验收;机床;精密度;试验
【英文主题词】:Acceptance(approval);Acceptancespecification;Design;Flatness(surface);Machinetools;Precision;Pressbrakes;Testing
【摘要】:
【中国标准分类号】:J62
【国际标准分类号】:25_120_10
【页数】:5P;A4
【正文语种】:德语