NF T34-811-1990 涂料和清漆.湿性房间用罩面漆规范

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【英文标准名称】:Plastics-Unplasticizedpoly(vinylchloride)sheets-Types,dimensionsandcharacteristics-Part2:Sheetsofthicknesslessthan1mm(ISO11833-2:1998);EnglishversionofDINENISO11833-2:2006-06
【原文标准名称】:塑料.未增塑聚氯乙烯薄板.类型、尺寸和特征.第2部分:厚度低于1mm的薄板
【标准号】:ENISO11833-2-2006
【标准状态】:现行
【国别】:
【发布日期】:2006-06
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:化学性质;分类;尺寸稳定性;尺寸;精整;箔;作标记;材料;机械性能;模制材料;生理效应(对人体);塑料;聚氯乙烯;特性;未增塑聚氯乙烯;薄板材;规范(验收);试验;厚度;厚度测量;不增塑的
【英文主题词】:Chemicalproperties;Classification;Dimensionalstability;Dimensions;Finishes;Foil;Marking;Materials;Mechanicalproperties;Mouldings(shapedsection);Physiologicaleffects(humanbody);Plastics;Polyvinylchloride;Properties;PVC-U;Sheets;Specification(approval);Testing;Thickness;Thicknessmeasurement;Unplasticized;Unplasticizedpolyvinylchloride
【摘要】:
【中国标准分类号】:G33
【国际标准分类号】:83_140_10
【页数】:9P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodsforTraceAnionsinHighPurityWaterbyIonChromatography
【原文标准名称】:离子色谱法分析高纯度水中痕量阴离子的标准试验方法
【标准号】:ASTMD5542-2004(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:anion;eluant;ionchromatography;trace;Acetate;Anionscontent;Bromide(ion)analysis;Chlorideanalysis--waterapplications;Eluent/elution;Fluoride(ion)analysis;Formate;High-puritywater;Iodideion(soluble)content;Ionchromatography(IC
【摘要】:Theanionsfluoride,chloride,andsulfatehavebeenidentifiedasimportantcontributorstocorrosionofhighpressureboilers,electricpowerturbinesandtheirassociatedheatexchangers.Manyelectricpowerutilitiesattempttoreducethesecontaminantsintheirboilerfeedwatertolessthan1x03BC;g/L.Inthesemiconductormanufacturingprocesstheseions,amongothers,havebeenidentifiedasacauseoflowproductyieldand,thus,mustbemonitoredandcontrolledtolevelssimilartothoserequiredbytheelectricpowerindustry.Lowmolecularweightorganicacids,suchasacetateandformate,havebeenfoundinmanysteamgeneratorfeedwatersandcondensates.Theyarebelievedtocomefromthehightemperaturebreakdownoforganicmatterfoundinboilermakeupwater.ItisfeltthattheseorganicacidspromotecorrosionbyloweringthepHofboilerwatersandmayevenbecorrosivethemselves.Suchlowmolecularweightorganicsmayalsobeproducedwhenultravioletlightisusedtoproducebacteria-freewaterforsemiconductorprocessing.Suchpolarorganiccontaminantsaresuspectedofcausingreducedsemiconductoryields.Phosphatesarecommonlyaddedtodrumboilersinthelowmg/Lleveltoprecipitatecalciumandmagnesiumandtherebypreventscaleformation.Ionchromatographycanbeusedtomonitortheconcentrationofsuchchemicalsinboilerwater,aswellasdetectunwantedcarry-overintothesteam.1.1Thesetestmethodscoverthedeterminationoftrace(x03BC;g/L)levelsoffluoride,acetate,formate,chloride,phosphate,andsulfateinhighpuritywaterusingionchromatographyincombinationwithsamplepreconcentration.Otheranions,suchasbromide,nitrite,nitrate,sulfite,andiodidecanbedeterminedbythismethod.However,sincetheyarerarelypresentinsignificantconcentrationsinhighpuritywater,theyarenotincludedinthistestmethod.Twotestmethodsarepresentedandtheirrangesofapplication,asdeterminedbyacollaborativestudy,areasfollows:
RangeTested(x03BC;g/LAdded)
LimitofDetectionA(SingleOperator)(x03BC;g/L)
Sections
TestMethodA:


7x2013;15
Chloride
0x2013;24
0.8

Phosphate
0x2013;39
B

Sulfate
0x2013;55
1.8

TestMethodB:


16x2013;23
Fluoride
0x2013;14
0.7