SAE AMS7857 Columbium (Niobium) Alloy Bars, Rods, and Extrusions 10Hf - 1.0Ti, Recrystallization Annealed
作者:标准资料网 时间:2024-05-14 01:23:01 浏览:9929
来源:标准资料网
Product Code:SAE AMS7857
Title:Columbium (Niobium) Alloy Bars, Rods, and Extrusions 10Hf - 1.0Ti, Recrystallization Annealed
Issuing Committee:Ams G Titanium And Refractory Metals Committee
Scope:This specification covers a columbium alloy in the form of bars, rods, and extrusions.
【英文标准名称】:TECHNICALDRAWINGS.PROJECTIONMETHODS.PART3:AXONOMETRICREPRESENTATIONS.
【原文标准名称】:技术制图.投影法.第3部分:三向图表示法
【标准号】:NFE04-508-3-1996
【标准状态】:作废
【国别】:法国
【发布日期】:1996-12
【实施或试行日期】:1996-11-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:J04
【国际标准分类号】:
【页数】:11P;A4
【正文语种】:其他
【英文标准名称】:Workplaceairquality-Samplingandanalysisofvolatileorganiccompoundsbysolventdesorption/gaschromatography-Diffusivesamplingmethod
【原文标准名称】:工作场所空气质量.用溶剂解吸/气相色谱法对挥发性有机物取样和分析.扩散取样法
【标准号】:BSISO16200-2-2004
【标准状态】:现行
【国别】:英国
【发布日期】:2004-11-26
【实施或试行日期】:2004-11-26
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:技术数据单;工作地点;空气;空气质量;工作场所安全;空气污染;金属;解吸;气体分析;含量测定;化学分析和试验;采样设备;取样;扩散采样器;气相色谱法;质量
【英文主题词】:Air;Airpollution;Airquality;Chemicalanalysisandtesting;Desorption;Determinationofcontent;Diffusivesamplers;Gasanalysis;Gaschromatography;Gasphasechromatography;Metals;Quality;Sampling;Samplingequipment;Technicaldatasheets;Workingplaces;Workplacesafety
【摘要】:ThispartofISO16200givesgeneralguidanceforthesamplingandanalysisofvolatileorganiccompounds(VOCs)inair.ThispartofISO16200isapplicabletoawiderangeofVOCs,includinghydrocarbons,halogenatedhydrocarbons,esters,glycolethers,ketonesandalcohols.AnumberofdevicesandsorbentsarerecommendedforthesamplingoftheseVOCs,eachsorbenthavingadifferentrangeofapplicability.NOTEActivatedcoconutshellcharcoalisfrequentlyused.Verypolarcompoundsmayrequirederivatization;verylowboilingcompoundswillonlybepartiallyretainedbythesorbentsandcanonlybeestimatedqualitatively.Semi-volatilecompoundswillbefullyretainedbythesorbents,butmayonlybepartiallyrecovered.ThispartofISO16200isvalidforthemeasurementofairbornevapoursofVOCsinaconcentrationrangeofapproximately1mg/mto1000mg/mindividualorganicforanexposuretimeof8h.Theupperlimitoftheusefulrangeissetbythesorptivecapacityofthesorbentusedand,subjecttodilutionoftheanalysedsolution,bythelineardynamicrangeofthegaschromatographcolumnanddetectororbythesamplesplittingcapabilityoftheanalyticalinstrumentationused.Thelowerlimitoftheusefulrangedependsonthenoiselevelofthedetectorandonblanklevelsofanalyteand/orinterferingartefactsonthesamplingdevicesorinthedesorptionsolvent.Artefactsaretypicallysub-nanogramforactivatedcharcoal,buthigherlevelsofaromatichydrocarbonshavebeennotedinsomebatches.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_30
【页数】:40P;A4
【正文语种】:英语
