ASTM E 395-1995 用燃烧碘酸盐滴定法对铁矿石中硫量的测试方法
时间:2024-05-17 22:17:45 来源: 标准资料网 作者：标准资料网 阅读：8297
【英文标准名称】:StandardTestMethodforDeterminationofTotalSulfurinIronOresandRelatedMaterialsbyCombustion-IodateTitration
【原文标准名称】:用燃烧碘酸盐滴定法对铁矿石中硫量的测试方法
【标准号】:ASTME395-1995
【标准状态】:作废
【国别】:美国
【发布日期】:1995
【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】:铁矿石;试验;分析;金属;硫;金属矿物;滴定法;化学分析和试验
【英文主题词】:ores;sulphur;titration;ironores;chemicalanalysisandtesting;testing;analysis;metals
【摘要】:
【中国标准分类号】:D31
【国际标准分类号】:73_060
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforQuantitativeAnalysisofTextiles
【原文标准名称】:纺织品定量分析的标准试验方法
【标准号】:ASTMD629-2008
【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(US-ASTM)
【起草单位】:D13.51
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Acceptancecriteria/testing--textilefabrics/fibers;Animalfibers;Bastandleaffibers/products;Celluloseandcellulosederivatives;Cellulosefiber;Chemicalproperties--textiles;Compositionanalysis--textiles;Cottonfibers;Cross-sectionmeasuremen
【摘要】:TestMethodsD629forthedeterminationofquantitativeanalysisoftextilesmaybeusedforacceptancetestingofcommercialshipmentsbutcautionisadvisedsinceinformationonbetween-laboratoryprecisionislacking.Comparativetestsasdirectedin5.1.1orbyTableD1909maybeadvisable.IncaseofadisputearisingfromdifferencesinreportedtestresultsusingTestMethodsD629foracceptancetestingofcommercialshipments,thepurchaserandthesuppliershouldconductcomparativeteststodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimenswhichareashomogeneousaspossibleandwhicharefromalotofmaterialofthetypeinquestion.Thetestspecimenshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingStudent''st-testandanacceptableprobabilitylevelchosenbythetwopartiesbeforethetestingbegan.Ifabiasisfound,eitheritscausemustbefoundandcorrectedorthepurchaserandsuppliermustagreetointerpretfuturetestresultsinthelightoftheknownbias.Theeffectsofthevariousreagentsusedinthechemicalmethodsontheresidualfibersinablenddependuponthehistoryofthefibersand,unlessotherwisestated,aregenerallytoosmallortoouncertaintowarranttheapplicationofcorrectionfactors.Fibercompositionisgenerallyexpressedeitherontheoven-drymassoftheoriginalsampleortheoven-drymassofthecleanfiberaftertheremovalofnonfibrousmaterials.Ifnonfibrousmaterialsarenotfirstremovedfromthetextilebeforethefiberanalysisiscarriedout,orifthetreatmentsdescribedinSection8areincapableofremovingthem,anysuchmaterialspresentwillincreasethepercentageofthefiberconstituentwithwhichtheyareremovedduringtheanalysis,assumingtheyaresolubleinthesolventused.Theanalyticalmethodsareintendedprimarilyfortheseparationofbinarymixturesoffibers.Theseproceduresmayalsobeusedfortheanalysisofmixturescontainingmorethantwotypesoffibersbyselectingthebestcombinationofmethodstouse(Table1).Sinceasequenceofsolventsonagivenfibermayproducedifferentresultsthantheexpectedresultsfromasinglesolvent,itisadvisabletodeterminetheresultsofsuchsequentialeffectswhentestingmultiplefiberblends.Itissometimesmoreconvenienttoseparatemechanicallytheyarnsinatextilewhichareofsimilartypes,andthenusetheappropriatechemicalmethodtoanalyzeeachofthecomponents.Table2showsthesolubilitiesofthevariousfibersindifferentchemicalreagents.1.1Thesetestmethodscoverproceduresforthedeterminationofthefiberblendcompositionofmixturesofthefiberslistedin1.2.Proceduresforquantitativeestimationoftheamountofmoistureandcertainnonfibrousmaterialsintextilesarealsodescribed,foruseintheanalysisofmixtures,butthesearenottheprimarymethodsforthedeterminationofmoisturecontentforcommercialweights.
【中国标准分类号】:W55
【国际标准分类号】:59_080_01
【页数】:22P.;A4
【正文语种】:英语
MIL-S-3786F (AMENDMENT 1), MILITARY SPECIFICATION: SWITCHES, ROTARY (CIRCUIT SELECTOR, LOW-CURRENT CAPACITY), GENERAL SPECIFICATION FOR (30 MAY 1995) [S/S BY MIL-DTL-3786G].