ISO 12966-2-2011 动物和植物的脂肪和油脂.脂肪酸甲基酯的气相色谱分析.第2部分:脂肪酸甲酯的制备

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【英文标准名称】:Animalandvegetablefatsandoils-Gaschromatographyoffattyacidmethylesters-Part2:Preparationofmethylestersoffattyacids
【原文标准名称】:动物和植物的脂肪和油脂.脂肪酸甲基酯的气相色谱分析.第2部分:脂肪酸甲酯的制备
【标准号】:ISO12966-2-2011
【标准状态】:现行
【国别】:国际
【发布日期】:2011-02-15
【实施或试行日期】:2011-02-15
【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】:
【英文主题词】:Agriculturalproducts;Animal;Animalfats;Animaloils;Borontrifluoride;Chemicalanalysisandtesting;Chemicalreactions;Esterification;Esters;Fats;Fattyacidmethylesters;Fattyacidmethylesters;Fattyacids;Foodproducts;Gaschromatography;Laboratorysample;Measurement;Measuringinstruments;Measuringtechniques;Methodsofmanufacture;Methylesters;Methylation;Oils;Procedures;Production;Samples;Samplingmethods;Specimenpreparation;Testperformance;Testreports;Testing;Testingdevices;Thin-layerchromatography;Vegetable;Vegetablefats;Vegetableoils
【摘要】:ThispartofISO12966specifiesmethodsofpreparingthemethylestersoffattyacids.Itincludesmethodsforpreparingfattyacidmethylestersfromanimalandvegetablefatsandoils,fattyacidsandsoaps.Tocoverdifferentrequirementsfourmethylationmethodsarespecified,namely:a)a“rapid”transmethylationprocedureunderalkalineconditions;b)a“general”transmethylation/methylationprocedureundersequentialalkalineandacidconditions;c)aBFtransmethylationprocedure;d)analternativeprocedureusingacid-catalysedtransmethylationofglycerides.Methylesterssoproducedareusedinvariousanalyticalproceduresrequiringsuchderivatives,e.g.gas-liquidchromatography(GLC),thin-layerchromatography(TLC),andinfraredspectrometry(IR).
【中国标准分类号】:
【国际标准分类号】:67_200_10
【页数】:24P.;A4
【正文语种】:英语

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上一篇: EN 61788-8-2010 超导性.第8部分:交流电损耗测量.用拾波线圈法在液氮温度下测量暴露于横向交流磁场中循环超导导线的交流电总损耗量(IEC61788-8-2010).德文版本EN61788-8-2010
下一篇: ISO 28600-2011 表面化学分析.扫描探针显微镜检查用数据传送格式

Product Code:SAE ARP1676
Title:Recommended Formulae for Determining Drop Dimensions for Simple-Bend Tube Fittings With Flared and Flareless End Connections Used in Aerospace Applications
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope: These formulae shall be used to determine drop dimensions for simple bend tube fittings utilizing flare and flareless end connection designs from 0 掳 to 90掳 used in aircraft and aerospace applications. Individual design standards shall specify parameters, such as centerline bend radius (R), straight tangent length to accommodate bending equipment (X1 and X2), and nut to be used.【英文标准名称】:Directlyheatednegativetemperaturecoefficientthermistors-Part2:Sectionalspecification;Surfacemountnegativetemperaturecoefficientthermistors
【原文标准名称】:直热式负温度系数热敏电阻器.第2部分:分规范.表面安装负温度系数热敏电阻器
【标准号】:IEC60539-2-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-11
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC40
【标准类型】:()
【标准水平】:()
【中文主题词】:表面安装;直接;分规范;质量评定;试验;热;热敏电阻;电阻器;表面安装设备;测量技术;电气工程;规范;质量;温度系数
【英文主题词】:Detailspecification;Dimensioning;Direct;Electricalengineering;Heated;Measurement;Measuringtechniques;Quality;Qualityassessment;Ratings;Resistors;Sectionalspecification;SMD;Specification;Surfacemounting;Temperaturecoefficients;Temperaturedependence;Temperature-dependent;Testing;Thermistors
【摘要】:Isapplicabletosurfacemountdirectlyheatednegativetemperaturecoefficientthermistors,typicallymadefromtransitionmetaloxidematerialswithsemiconductingproperties.Thesethermistorshavemetallizedconnectingpadsorsolderingstripsandar
【中国标准分类号】:L15
【国际标准分类号】:31_040_30
【页数】:28P.;A4
【正文语种】:英语