ASTM D934-1980(2003) 用X射线衍射法作水沉积物中结晶化合物的识别方法

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【英文标准名称】:StandardPracticesforIdentificationofCrystallineCompoundsinWater-FormedDepositsByX-RayDiffraction
【原文标准名称】:用X射线衍射法作水沉积物中结晶化合物的识别方法
【标准号】:ASTMD934-1980(2003)
【标准状态】:现行
【国别】:
【发布日期】:1980
【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】:D19.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:分析;识别;水;晶体学;X射线衍射分析;工艺;晶体;(使)沉积
【英文主题词】:crystallographicexamination;deposits;metaloxides;scale;
【摘要】:Theidentificationofthecrystallinestructuresinwater-formeddepositsassistsinthedeterminationofthedepositsourcesandmodeofdeposition.Thisinformationmayleadtomeasuresfortheeliminationorreductionofthewater-formeddeposits.1.1ThesepracticesprovideforX-raydiffractionanalysisofpowderedcrystallinecompoundsinwater-formeddeposits.Twoaregivenasfollows:SectionsPracticeA-Camera12to21PracticeB-Diffractometer22to301.2Bothpracticesyieldqualitativeidentificationofcrystallinecomponentsofwater-formeddepositsforwhichX-raydiffractiondataareavailableorcanbeobtained.Greaterdifficultyisencounteredinidentificationwhenthenumberofcrystallinecomponentsincreases.1.3Amorphousphasescannotbeidentifiedwithoutspecialtreatment.Oils,greases,andmostorganicdecompositionproductsarenotidentifiable.1.4Thesensitivityforagivencomponentvarieswithacombinationofsuchfactorsasdensity,degreeofcrystallization,particlesize,coincidenceofstronglinesofcomponentsandthekindandarrangementoftheatomsofthecomponents.Minimumpercentagesforidentificationmaythereforerangefrom1to40%.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoconsultandestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection8andNote20.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_30
【页数】:9P.;A4
【正文语种】: