【英文标准名称】:StandardTestMethodforDeterminationofAmmonium,AlkaliandAlkalineEarthMetalsinHydrogenandOtherCellFeedGasesbyIonChromatography
【原文标准名称】:采用离子色相光谱法测定氢电池和其他电池中灌注气体的的氨,碱和碱土金属含量的标准试验办法
【标准号】:ASTMD7550-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:D03.14
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:ammonia;calcium;cations;fuelcells;gaseousfuels;hydrogen;ionchromatography;magnesium;PEM;potassium;protonexchangemembrane;sampling;sodium
【摘要】:Lowoperatingtemperaturefuelcellssuchasprotonexchangemembrane(PEM)fuelcellsrequirehighpurityhydrogenformaximummaterialperformanceandlifetime.Analysistopart-per-billion(ppb)concentrationofindividualcationcontaminantssuchaspotassium,sodiumandammoniuminhydrogenandrelatedfuelcellsupplygasesisnecessaryforassuringafeedgasofsufficientpuritytosatisfyfuelcellsystemneeds.Morespecifically,cationssuchasammoniumcausesirreversibleperformancedegradationofprotonexchangemembranesusedinlowtemperaturefuelcellsbyreactingwithprotonsinthemembranetoformammoniumions.Althoughnotintendedforapplicationtogasesotherthanhydrogenandrelatedfuelcellsupplygases,techniqueswithinthistestmethodcanbeappliedtoothergaseoussamplesrequiringcationanalysis.1.1Thistestmethoddescribesaprocedureforthedeterminationofcationsinhydrogenandotherfuelcellfeedgases.Ithasbeensuccessfullyappliedtoothertypesofgaseoussamplesincludingair,engineexhaust,andlandfillsamples.Anionchromatograph/conductivitydetector(IC/CD)systemisusedtodeterminecations.Sensitivityfromlowpartperbillion(ppb,x03BC;g/l,x03BC;g/kg)uptopartpermillion(ppm,mg/l,mg/kg)concentrationareachievabledependantontheamountofhydrogenorotherfuelcellgassampled.Thistestmethodcanbeappliedtoothergaseoussamplesrequiringanalysisoftraceconstituentsprovidedanassessmentofpotentialinterferenceshasbeenaccomplished.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:27_070;71_040_50
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:Resilientfloorcoverings-Tilesofagglomeratedcompositioncorkwithpolyvinylchloridewearlayer-Specification;GermanversionEN655:1996
【原文标准名称】:弹性覆地材料.带聚氯乙烯耐磨层和压制软木背衬的地板砖.规范
【标准号】:DINEN655-1997
【标准状态】:作废
【国别】:德国
【发布日期】:1997-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:柔性;特性;弹性的;低层;路面基层;铺地砖;软木制品;分类;规范(验收);聚氯乙烯;塑料;地板覆盖物;作标记;规范;面砖
【英文主题词】:Agglomeratedcork;Basecourses;Classification;Cork;Elastic;Elasticfabrics;Flexible;Floorcoverings;Flooringtiles;Lowerlayers;Marking;Plastics;Polyvinylchloride;Properties;PVCcoverings;Specification;Specification(approval);Tiles;Wearlayers
【摘要】:Thedocumentspecifiesthecharacteristicsofagglomeratedcorkwithawearlayerbasedonpolyvinylchlorideandmodificationsthereof.
【中国标准分类号】:Q22
【国际标准分类号】:97_150
【页数】:7P.;A4
【正文语种】:德语