DIN EN 14213-2003 加热用燃料.脂肪酸甲酯(FAME).要求和试验方法
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【英文标准名称】:Heatingfuels-Fattyacidmethylesters(FAME)-Requirementsandtestmethods;GermanversionEN14213:2003
【原文标准名称】:加热用燃料.脂肪酸甲酯(FAME).要求和试验方法
【标准号】:DINEN14213-2003
【标准状态】:作废
【国别】:德国
【发布日期】:2003-11
【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】:含水量;试验;闪点;密度;脂肪酸甲酯;脂肪酸;蔬菜;石油产品;实验室间试验;煤油产品;燃料油;抽样方法;植物油;残碳;热值;热分析;菜籽油;生物分析和试验;甲酯;倾点;葵花籽油;规范(验收);含量测定;化学分析和试验;特性;油料种子;FAME;粘度
【英文主题词】:Biologicalanalysisandtesting;Calorificvalue;Carbonresidues;Chemicalanalysisandtesting;Density;Determinationofcontent;FAME;Fattyacidmethylesters;Fattyacids;Flashpoint;Fueloil;Inter-laboratorytests;Kerosineproduct;Methylesters;Oilseeds;Petroleumproducts;Pourpoint;Properties;Rapeseedoil;Samplingmethods;Specification(approval);Sunflowerseedoil;Testing;Thermalanalysis;Vegetable;Vegetableoils;Viscosity;Watercontent
【摘要】:
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:15P.;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforSilicainWater
【原文标准名称】:水中二氧化硅的标准试验方法
【标准号】:ASTMD859-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D19.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;含量测定;硅;水
【英文主题词】:colorimetric;silicawater
【摘要】:Siliconcomprisesabout28%ofthelithosphereandis,nexttooxygen,themostabundantelement.Itisfoundastheoxideincrystallineforms,asinquartz;combinedwithotheroxidesandmetalsinavarietyofsilicates;andinamorphousforms.Siliconisthemostabundantelementinigneousrocksandisthecharacteristicelementofallimportantrocksexceptthecarbonates.Itistheskeletalmaterialofdiatomsbutisnotknowntoplayasignificantroleinthestructureofprocessesofhigherlifeforms.Silicaisonlyslightlysolubleinwater.Thepresenceofmostsilicainnaturalwaterscomesfromthegradualdegradationofsilica-containingminerals.Thetypeandcompositionofthesilica-containingmineralsincontactwiththewaterandthepHofthewateraretheprimaryfactorscontrollingboththesolubilityandtheformofsilicaintheresultingsolution.Silicamayexistinsuspendedparticles,asacolloid,orinsolution.Itmaybemonomericorpolymeric.Insolutionitcanexistassilicicacidorsilicateion,dependinguponpH.Thesilicacontentofnaturalwatersiscommonlyinthe5to25mg/Lrange,althoughconcentrationsover100mg/Loccurinsomeareas.Silicaconcentrationisanimportantconsiderationinsomeindustrialinstallationssuchassteamgenerationandcoolingwatersystems.Undercertainconditions,silicaformstroublesomesilicaandsilicatescales,particularlyonhigh-pressuresteamturbineblades.Incoolingwatersystems,silicaformsdepositswhensolubilitylimitsareexceeded.Incontrast,silicamaybeaddedasatreatmentchemicalinsomesystems,forexample,incorrosioncontrol.Silicaremovaliscommonlyaccomplishedbyionexchange,distillation,reverseosmosis,orbyprecipitation,usuallywithmagnesiumcompoundsinahotorcoldlimesofteningprocess.1.1Thistestmethodcoversthedeterminationofsilicainwaterandwastewater;however,theanalystshouldrecognizethattheprecisionandaccuracystatementsforreagentwatersolutionsmaynotapplytowatersofdifferentmatrices.1.2Thistestmethodisacolorimetricmethodthatdeterminesmolybdate-reactivesilica.Itisapplicabletomostwaters,butsomewatersmayrequirefiltrationanddilutiontoremoveinterferencesfromcolorandturbidity.Thistestmethodisusefulforconcentrationsaslowas20[u]g/L.1.3Thistestmethodcoversthephotometricdeterminationofmolybdate-reactivesilicainwater.Duetothecomplexityofsilicachemistry,theformofsilicameasuredisdefinedbytheanalyticalmethodasmolybdate-reactivesilica.Thoseformsofsilicathataremolybdate-reactiveincludedissolvedsimplesilicates,monomericsilicaandsilicicacid,andanundeterminedfractionofpolymericsilica.1.4Theusefulrangeofthistestmethodisfrom20to1000[u]g/Latthehigherwavelength(815nm)and0.1to5mg/Latthelowerwavelength(640nm).Itisparticularlyapplicabletotreatedindustrialwaters.Itmaybeappliedtonaturalwatersandwastewatersfollowingfiltrationordilution,orboth.Forseawaterorbrines,thistestmethodisapplicableonlyifmatchedmatrixstandardsorstandardadditiontechniquesareemployed.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1--Formanynaturalwaters,ameasurementofmolybdate-reactivesilicabythistestmethodprovidesacloseapproximationoftotalsilica,and,inpractice,thecolorimetricmethodisfrequentlysubstitutedforothermoretime-consumingtechniques.Thisisacceptablewhen,asfrequentlyoccurs,themolybdate-reactivesilicaisinthe
基本信息
| 标准名称： | 教学用电子仪器的质量检验规则及试验方法 |
| 中标分类： |
轻工、文化与生活用品 >>
文教、体育、娱乐用品 >>
教学专用仪器 |
| 替代情况： | JY 7-78;被JY 0009-1990代替 |
| 发布日期： | |
| 实施日期： | 2004-07-15 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 10页 |
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所属分类： 轻工 文化与生活用品 文教 体育 娱乐用品 教学专用仪器
