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【英文标准名称】:StandardTestMethodforFuranicCompoundsinElectricalInsulatingLiquidsbyHigh-PerformanceLiquidChromatography(HPLC)
【原文标准名称】:用高效液相色谱法(HPLC)测试电绝缘液中呋喃化合物的标准试验方法
【标准号】:ASTMD5837-1999(2005)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D27.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:HPLC分析;呋喃化合物;呋喃甲醛;乙酰呋喃;糠醇;试验;液相色谱法;α-呋喃甲醛;电绝缘液体;糠基;呋喃基;液体萃取;固相萃取;糠醛;甲基;羟甲基
【英文主题词】:directinjection;furaldehyde;furanoid;furans;furanic;furfuraldehyde;furfurylalcohol;furfurylfurfurol;furyl;furfural;HPLC;liquid/liquidextraction;solid-phaseextraction;SPE;5-hydroxymethyl-2-furaldehyde;2-furaldehyde;2-acetylfuran;5-meth
【摘要】:Furaniccompoundsaregeneratedbythedegradationofcellulosicmaterialsusedinthesolidinsulationsystemsofelectricalequipment.Furaniccompoundswhichareoilsolubletoanappreciabledegreewillmigrateintotheinsulatingliquid.Highconcentrationsorunusualincreasesintheconcentrationsoffuraniccompoundsinoilmayindicatecellulosedegradationfromagingorincipientfaultconditions.TestingforfuraniccompoundsmaybeusedtocomplementdissolvedgasinoilanalysisasperformedinaccordancewithTestMethodD3612.1.1Thistestmethoddescribesthedeterminationinelectricalinsulatingliquidsofproductsofthedegradationofcellulosicmaterialssuchaspaper,pressboard,andcottonmaterialstypicallyfoundasinsulatingmaterialsinelectricalequipment.Thesedegradationproductsaresubstitutedfuranderivatives,commonlyreferredtoasfuraniccompoundsorfurans.Thistestmethodallowseitherliquid/liquidorsolidphaseextraction(SPE)ofthefuraniccompoundsfromthesamplematrixfollowedbyanalysisforspecificfuraniccompoundsbyHPLCordirectinjectionforanalysisofspecificfuraniccompoundsbyHPLC.1.2Theindividualfuraniccompoundsthatmaybeidentifiedandquantifiedincludethefollowing:5-hydroxymethyl-2-furaldehydefurfurylalcohol2-furaldehyde2-acetylfuran5-methyl-2-furaldehyde【英文标准名称】:UnrecordedEleven-DiskPack-General,Physical,andMagneticRequirements
【原文标准名称】:未录制11碟包装.一般、物理和磁性要求
【标准号】:ANSIINCITS58-1977
【标准状态】:现行
【国别】:美国
【发布日期】:1977
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:磁盘组;信息交换;信息处理;信息系统
【英文主题词】:Diskpacks;Informationinterchange;Informationprocessing;Informationsystems
【摘要】:Specifiesthegeneral,physicalandmagneticrequirementsforthephysicalinterchangeofmagneticeleven-diskpacksforuseinelectronicdataprocessingsystems.
【中国标准分类号】:L64
【国际标准分类号】:35_220_23
【页数】:44P.;A4
【正文语种】:英语