【英文标准名称】:StandardTestMethodforAromaticCarbonContentsofHydrocarbonOilsbyHighResolutionNuclearMagneticResonanceSpectroscopy
【原文标准名称】:用高裂度核磁共振光谱法测定烃类油中芳香碳含量的标准试验方法
【标准号】:ASTMD5292-1999(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【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】:D02.04.0F
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aromaticcarboncontent;aromatichydrogencontent;continuouswave;Fouriertransform;hydrocarbonoils;NMR;nuclearmagneticresonancespectroscopy;Aromaticcompounds;Aromatichydrocarbons(AHs);Aromatichydrogen/carboncontent;Carboncontent
【摘要】:Aromaticcontentisakeycharacteristicofhydrocarbonoilsandcanaffectavarietyofpropertiesoftheoilincludingitsboilingrange,viscosity,stability,andcompatibilityoftheoilwithpolymers.Existingmethodsforestimatingaromaticcontentsusephysicalmeasurements,suchasrefractiveindex,density,andnumberaveragemolecularweight(seeTestMethodD3238)orinfraredabsorbanceandoftendependontheavailabilityofsuitablestandards.TheseNMRproceduresdonotrequirestandardsofknownaromatichydrogenoraromaticcarboncontentsandareapplicabletoawiderangeofhydrocarbonoilsthatarecompletelysolubleinchloroformatambienttemperature.Thearomatichydrogenandaromaticcarboncontentsdeterminedbythistestmethodcanbeusedtoevaluatechangesinaromaticcontentsofhydrocarbonoilsduetochangesinprocessingconditionsandtodevelopprocessingmodelsinwhichthearomaticcontentofthehydrocarbonoilisakeyprocessingindicator.1.1Thistestmethodcoversthedeterminationofthearomatichydrogencontent(ProceduresAandB)andaromaticcarboncontent(ProcedureC)ofhydrocarbonoilsusinghigh-resolutionnuclearmagneticresonance(NMR)spectrometers.Applicablesamplesincludekerosenes,gasoils,mineraloils,lubricatingoils,coalliquids,andotherdistillatesthatarecompletelysolubleinchloroformatambienttemperature.ForpulseFouriertransform(FT)spectrometers,thedetectionlimitistypically0.1mol%aromatichydrogenatomsand0.5mol%aromaticcarbonatoms.Forcontinuouswave(CW)spectrometers,whicharesuitableformeasuringaromatichydrogencontentsonly,thedetectionlimitisconsiderablyhigherandtypically0.5mol%aromatichydrogenatoms.1.2Thereportedunitsaremolepercentaromatichydrogenatomsandmolepercentaromaticcarbonatoms.1.3Thistestmethodisnotapplicabletosamplescontainingmorethan1mass%olefinicorphenoliccompounds.1.4ThistestmethoddoesnotcoverthedeterminationofthepercentagemassofaromaticcompoundsinoilssinceNMRsignalsfrombothsaturatedhydrocarbonsandaliphaticsubstituentsonaromaticringcompoundsappearinthesamechemicalshiftregion.Forthedeterminationofmassorvolumepercentaromaticsinhydrocarbonoils,chromatographic,ormassspectrometrymethodscanbeused.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificprecautionarystatementsaregivenin7.2and7.3.
【中国标准分类号】:E31
【国际标准分类号】:75_080
【页数】:7P.;A4
【正文语种】:英语


【英文标准名称】:Hand-heldmotor-operatedelectrictools-Safety-Part1:Generalrequirements(IEC60745-1:2006,modified);GermanversionEN60745-1:2009
【原文标准名称】:手持式电动工具.安全.第1部分:一般要求(IEC60745-1-2006,修改).德文版本EN60745-1-2009
【标准号】:EN60745-1-2009
【标准状态】:现行
【国别】:
【发布日期】:2010-01
【实施或试行日期】:2010-01-01
【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】:附加设备;环境温度;波幅;附件;蓄电池组;曲线形保护鞘;抗弯试验设备;壳体;水泥;电路;夹具;防护等级;间隙;色码;混凝土成分;导(线)管;连接螺栓;连接件;触点;接触安全装置;腐蚀;电流;防潮;定义;偏差;介电强度;尺寸;置换;距离;钻床;跌落试验;耐久性;粉尘测定;接地导线;电气器具;(电网)电源;电动机马达;电击;电动工具;电气工程;电气安全;电驱动装置;电子工程;环境;环境条件;环境影响;设备安全;羽毛;加热条;耐火性;火灾危险;防火安全;频率;一般条件;磨床;锤子;手动的;手动工具;手柄轴;手柄;加热;热卷筒;家用设备;潮湿房间;冲击试验器;不熟练的;输入电流;铭刻;仪器;绝缘电阻;绝缘件;干扰抑制;内部覆层;漏电;漏电路径;负荷;机床;手动装置;处理;材料;麦克风布置;传声器;铣床;最小值;抗湿;电动的;电动机;多语种的;噪声测量;螺母转动;操作;操作安全;过载继电器;铺路装置;步进控制系统;插头;功率消耗;动力驱动;保护(装置);危险防护;防电击;保护覆盖层;合格试验;辐射;记录;反射;排气;旋转方向;防锈;安全;安全要求;锯床;剪刀;规范(验收);起动;材料强度;冲技能;温度;温度限止器;温升;拉力;试验仪表;试验;试验条件;测试电压;热稳定性;螺纹;刀具夹具;工具;扭矩;用户信息;振动测量;水;防水的;重量;井
【英文主题词】:Additionalequipment;Ambienttemperature;Amplitude;Attachments;Batteries;Bendingprotectionsheaths;Bendingtestequipment;Bodies;Cements;Circuits;Clamps;Classesofprotection;Clearances;Colourcodes;Concretecomposition;Conduits;Connectionbolts;Connections;Contact;Contactsafetydevices;Corrosion;Currents;Damp-proofing;Definitions;Deviations;Dielectricstrength;Dimensions;Displacements;Distances;Drillingmachines;Droptests;Durability;Dustmeasurement;Earthconductors;Electricappliances;Electricmains;Electricmotors;Electricshock;Electrictools;Electricalengineering;Electricalsafety;Electrically-operateddevices;Electronicengineering;Environment;Environmentalcondition;Environmentaleffect;Equipmentsafety;Feathers;Firebars;Fireresistance;Firerisks;Firesafety;Frequencies;Generalconditions;Grindingmachines;Hammers;Handoperated;Handtools;Handleshafts;Handles;Heating;Hot-mandrel;Householdequipment;Humidrooms;Impacttesters;Inexpert;Inputcurrent;Inscription;Instruments;Insulatingresistance;Insulations;Interferencesuppression;Internalcoatings;Leakagecurrent;Leakagepaths;Loading;Machinetools;Manually-operateddevices;Marking;Materials;Microphonearrangement;Microphones;Millingmachines;Minimalvalues;Moistureresistance;Motor-operated;Motors;Noisemeasurements;Nutrunners;Operation;Operationalsafety;Overloadrelays;Pavingdevices;Pedestrian-controlledsystems;Plugs;Powerconsumption;Powerdrives;Protection;Protectionagainstdanger;Protectionagainstelectricshocks;Protectioncoverings;Qualificationtests;Radiation;Recording;Reflection;Relieving;Rotationaldirections;Rustprotection;Safety;Safetyrequirements;Sawingmachines;Scissors;Specification(approval);Start;Strengthofmaterials;Strikingenergy;Temperature;Temperaturelimiters;Temperaturerise;Tensileforce;Testapparatus;Testing;Testingconditions;Testingvoltages;Thermalstability;Threads;Toolholdingfixtures;Tools;Torque;Userinformation;Vibrationmeasurement;Water;Waterproof;Weights;Wells
【摘要】:
【中国标准分类号】:K64
【国际标准分类号】:25_140_20
【页数】:152P.;A4
【正文语种】:英语