【英文标准名称】:Rotarywaferswitches(lowcurrentrating).Part2:Rotarywaferswitcheswithcentralmounting
【原文标准名称】:旋转片开关(小电流额定值).第2部分:中心安装的旋转片开关
【标准号】:IEC60132-2-1963
【标准状态】:作废
【国别】:国际
【发布日期】:1963
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC48
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;开关;旋转圆片开关;中心固定安装;旋转式开关;电子设备
【英文主题词】:electronicequipment;rotarywaferswitches;electricalengineering;centralmounting;switches;rotaryswitches
【摘要】:
【中国标准分类号】:L22
【国际标准分类号】:29_120_40
【页数】:21P;A4
【正文语种】:英语


【英文标准名称】:Soilquality—Gaschromatographicdeterminationofvolatilearomaticandhalogenatedhydrocarbonsandselectedethers—Staticheadspacemethod
【原文标准名称】:土壤质量.挥发性芳烃与卤代烃以及选定醚类的气象色谱法测定.静态液上法
【标准号】:ISO22155-2011
【标准状态】:现行
【国别】:国际
【发布日期】:2011-04-01
【实施或试行日期】:2011-04-01
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC190
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aromatichydrocarbons;Chemicalanalysisandtesting;Chromatography;Compositionoftheground;Determination;Determinationofcontent;Ethers;Gaschromatography;Halogenatedhydrocarbons;Head-spaceanalysis;Hydrocarbons;Mathematicalcalculations;Methodsofanalysis;Samplingmethods;Soilanalysis;Soilsurveys;Soiltesting;Soils;Volatilematterdetermination;Volatileorganiccompoundcontent;Volatileorganiccompounds;Waterpractice
【摘要】:ThisInternationalStandardspecifiesastaticheadspacemethodforquantitativegaschromatographicdeterminationofvolatilearomaticandhalogenatedhydrocarbonsandselectedaliphaticethersinsoil.ThisInternationalStandardisapplicabletoalltypesofsoil.Thelimitofdeterminationisdependentonthedetectionsystemusedandthequalityofthemethanolgradeusedfortheextractionofthesoilsample.UndertheconditionsspecifiedinthisInternationalStandard,thefollowinglimitsofdeterminationapply(expressedonthebasisofdrymatter):Typicallimitofdeterminationwhenusinggaschromatography/flameionizationdetection(GC/FID):-volatilearomatichydrocarbons:0,2mg/kg;-aliphaticethersasmethyltert-butylether(MTBE)andtert-amylmethylether(TAME):0,5mg/kg.Typicallimitofdeterminationwhenusinggaschromatography/electroncapturedetection(GC/ECD):-volatilehalogenatedhydrocarbons:0,01mg/kgto0,2mg/kg.Lowerlimitsofdeterminationcanbeachievedforsomecompoundsbyusingmassspectrometry(MS)withselectediondetection(seeAnnexD).
【中国标准分类号】:Z18
【国际标准分类号】:13_080_10
【页数】:26P.;A4
【正文语种】:英语