【英文标准名称】:Animalandvegetablefatsandoils-Determinationofthecontentoftransfattyacidisomersofvegetablefatsandoils-Gaschromatographicmethod
【原文标准名称】:动植物脂肪和油.蔬菜脂肪和油过脂肪酸异构体含量测定.气相色谱法
【标准号】:ISO15304-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-03
【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】:气相色谱法;试验;含量测定;农产品;植物脂肪;定义;动物脂肪;脂肪;脂肪酸;植物油;油;动物油
【英文主题词】:Agriculturalproducts;Animal;Animalfats;Animaloils;Chemicalanalysisandtesting;Composition;Definitions;Determinationofcontent;Fats;Fattyacids;Foodproducts;Gaschromatograms;Gaschromatography;Investigationmethods;Isomer;Mathematicalcalculations;Methodsofanalysis;Methylesters;Oils;Precision;Testing;Vegetable;Vegetablefats;Vegetableoils
【摘要】:ThisInternationalStandardspecifiesagaschromatographicmethodusingcapillarycolumnsforthedeterminationofthecontentoftransfattyacidisomersofvegetableoilsandfats.Themethodisspeciallydesignedtoevaluate,byasinglecapillarygaschromatographic(GC)procedure,theleveloftransisomersasformedduring(hightemperature)refining,orduringhydrogenationofvegetableoilsorfats.Themethodmayalsobeusedtoreportallotherfattyacids(e.g.toobtainthefullfattyacidcompositionandtotalamountsofsaturatedfattyacids,mono-unsaturatedfattyacidsandpoly-unsaturatedfattyacids)fromthesamesampleandsameanalysis.NOTE1Thetrans-isomercontentasobtainedwiththismethodmaynotagreewiththetrans-isomercontentasobtainedusingothermethods.NOTE2During(hightemperature)refining(deacidificationanddeodorization),onlygeometricalisomersareformedofthemono-andpoly-unsaturatedfattyacids;i.e.thedoublebond(s)remain(s)atthesamenaturalposition.Duringhydrogenation,bothpositionalandgeometricalisomersareformed.NOTE3Forsomespecificcis-andtrans-isomersformedduringhydrogenation,co-elutionispossible.Thiscouldinfluencetheaccuracyoftheresult.Theleveloftheseisomersisusuallynegligibleinnormalpartiallyhydrogenatedoilsandfats.
【中国标准分类号】:X16
【国际标准分类号】:67_200_10
【页数】:20P;A4
【正文语种】:英语


【英文标准名称】:Steelflatproductsforpressurepurposes-Technicaldeliveryconditions-Part2:Non-alloyandalloysteelswithspecifiedelevatedtemperatureproperties
【原文标准名称】:承压用扁钢制品.技术交付条件.第2部分:具有指定升温属性的非合金钢与合金钢
【标准号】:ISO9328-2-2011
【标准状态】:现行
【国别】:国际
【发布日期】:2011-05-01
【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/TC17
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Alloysteels;Chemicalanalysisandtesting;Classification;Compressionstresses;Consumer-supplierrelations;Deliveryconditions;Designations;Flatrolledproducts;Inspection;Marking;Mechanicalproperties;Plates;Properties;Samplingmethods;Semi-finishedproducts;Sheetsteels;Specification(approval);Specifications;Steelproducts;Steelstrips;Steels;Steelsforpressurevessels;Testing;Unalloyedsteels
【摘要】:ThispartofISO9328specifiesthetechnicaldeliveryconditionsforplatesandstripforpressureequipmentmadeofnon-alloyandalloysteelsasspecifiedinTablesA.1andB.1.TherequirementsanddefinitionsofISO9328-1alsoapplytothispartofISO9328.
【中国标准分类号】:H46
【国际标准分类号】:77_140_30;77_140_50
【页数】:34P.;A4
【正文语种】:英语