【英文标准名称】:StandardPracticesforPreparationandPreliminaryTestingofWater-FormedDeposits
【原文标准名称】:水沉积物的制备和初步试验的标准实施规程
【标准号】:ASTMD2331-2008
【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】:D19.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:atomicabsorption;crystallographicexamination;deposits;microscopy;samplepreparation;scale;spectrographicanalysis;x-raydiffraction;x-rayfluorescence;Aluminumcontent;Calciumcontent--water;Carbonatecontent;Coppercontent--water;Ironco
【摘要】:Depositsinpipingfromaqueousprocessstreamsserveasanindicatoroffouling,corrosionorscaling.Rapidtechniquesofanalysisareusefulinidentifyingthenatureofthedepositsothatthereasonfordepositioncanbeascertained.Possibletreatmentschemescanbedevisedtopreventdepositionfromreoccurring.Depositsformedfromorbywaterinallitsphasesmaybefurtherclassifiedasscale,sludge,corrosionproductsorbiologicaldeposits.Theoverallcompositionofadepositorsomepartofadepositmaybedeterminedbychemicalorspectrographicanalysis;theconstituentsactuallypresentaschemicalsubstancesmaybeidentifiedbymicroscopeorX-ray.1.1Thesepracticesprovidedirectionsforthepreparationofthesampleforanalysis,thepreliminaryexaminationofthesample,andmethodsfordissolvingtheanalyticalsampleorselectivelyseparatingconstituentsofconcern.1.2Thegeneralpracticesgivenherecanbeappliedtoanalysisofsamplesfromavarietyofsurfacesthataresubjecttowater-formeddeposits.However,theinvestigatormustresorttoindividualexperienceandjudgementinapplyingtheseprocedurestospecificproblems.1.3Thepracticesincludethefollowing:
Sections
PreparationoftheAnalyticalSample
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PreliminaryTestingoftheAnalyticalSample
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DissolvingtheAnalyticalSample
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