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【英文标准名称】:StandardTestMethodforDeterminationofPhenolicAntioxidantsandErucamideSlipAdditivesinPolypropyleneHomopolymerFormulationsUsingLiquidChromatography(LC)
【原文标准名称】:用液相色谱法对聚丙烯均聚物配方中酚醛抗氧化剂和酰胺纤维润滑添加剂测定的标准试验方法
【标准号】:ASTMD6042-2004
【标准状态】:作废
【国别】:
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:有机化合物;化工技术;液相色谱法;化学分析和试验;试验
【英文主题词】:additive;antioxidants;erucamideslip;extraction;Irgafos168;Irganox1010;Irganox1076;Irganox3114;liquidchromatography(LC);polypropylene(PP);vitaminE
【摘要】:Separationandidentificationofstabilizersusedinthemanufactureofpolypropyleneisnecessaryinordertocorrelateperformancepropertieswithpolymercomposition.Thistestmethodprovidesameanstodetermineerucamideslip,VitaminE,Irgafos168,Irganox3114,Irganox1010,andIrganox1076levelsinpolypropylenesamples.Thistestmethodisalsoapplicableforthedeterminationofotherantioxidants,suchasUltranox626,Ethanox330,SantanoxR,andBHT,buttheapplicabilityofthistestmethodhasnotbeeninvestigatedfortheseantioxidants.Theadditive-extractionprocedureismadeeffectivebytheinsolubilityofthepolymersampleinsolventsgenerallyusedforliquidchromatographicanalysis.Underoptimumconditions,thelowestlevelofdetectionforaphenolicantioxidantisapproximately2ppm.Note28212;Othermethodsthathavebeenusedsuccessfullytoremoveadditivesfromtheplasticsmatrixincludethinfilm,microwave,ultrasonic,andsupercriticalfluidextractions.OthermethodshavebeenusedsuccessfullytoseparateadditivesincludingSFCandcapillaryGC.Irgafos168isaphosphiteantioxidant.Phosphitesareknowntoundergobothoxidationandhydrolysisreactions.LessIrgafos168maybeseeninthepolymerthanoriginallyaddedtothepolymerduetooxidationduringprocessing.TheHPLCseparationiscapableofseparatingthephosphite,phosphate(oxidationproduct),andhydrolysisproductandquantifythemifstandardsareobtained.Nosignificantbreakdownofthephosphiteantioxidanthasbeenseenduetoeitherextractiontechniqueortheseparationpresentedinthisstandard.1.1Thistestmethodcoversaliquid-chromatographicprocedurefortheseparationofsomeadditivescurrentlyusedinpolypropylene.Theseadditivesareextractedwithacyclohexane:methylenechloridemixtureusingeitherrefluxorultrasonicbathpriortoliquid-chromatographicseparation.Theultravioletabsorbence(200nm)ofthecompound(s)ismeasured,andquantitationisperformedusingtheinternalstandardmethod.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection9.Note1-ThereisnosimilarorequivalentISOstandard.
【中国标准分类号】:G17
【国际标准分类号】:71_040_50;83_080_20
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:Cheese-Determinationoffatcontent-VanGulikmethod
【原文标准名称】:乳酪.脂肪含量的测定.VanGulik法
【标准号】:ISO3433-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-01
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC34
【标准类型】:()
【标准水平】:()
【中文主题词】:乳酪;化学分析和测试;乳制品;定义;含量测定;脂肪含量;油萃取法;脂肪;食品检验;食品;奶制品;VanGulik法
【英文主题词】:Cheese;Chemicalanalysisandtesting;Dairyproducts;Definitions;Determinationofcontent;Fatcontents;Fatextractionmethods;Fats;Foodinspection;Foodproducts;Milkproducts;VanGulik
【摘要】:ThisInternationalStandardspecifiestheVanGulikmethodforthedeterminationofthefatcontent,asamassfraction,ofcheese.Thismethodisapplicabletoalltypesofcheese.However,itmaynotgivecompletelysatisfactoryresultswhenappliedtocheeseswithaninternalmould(blue-veinedcheeses).
【中国标准分类号】:X16
【国际标准分类号】:67_100_30
【页数】:12P.;A4
【正文语种】:英语