ASTM D1607-1991(2005) 大气中二氧化氮含量的测试方法(格里斯-沙耳茨曼反应)

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【英文标准名称】:StandardTestMethodforNitrogenDioxideContentoftheAtmosphere(Griess-SaltzmanReaction)
【原文标准名称】:大气中二氧化氮含量的测试方法(格里斯-沙耳茨曼反应)
【标准号】:ASTMD1607-1991(2005)
【标准状态】:现行
【国别】:
【发布日期】:1991
【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】:D22.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;分析;空气;保健;职业安全;含量测定
【英文主题词】:ambientatmospheres;analysis;colorimetricanalysis;Griess-SaltzmanReaction;nitrogendioxide;sampling
【摘要】:Nitrogendioxideplaysanimportantroleinphotochemicalsmog-formingreactionsand,insufficientconcentrations,isdeleterioustohealth,agriculture,materials,andvisibility.Incombustionprocesses,significantamountsofnitricoxide(NO)maybeproducedbycombinationofatmosphericnitrogenandoxygen;atambienttemperaturesNOcanbeconvertedtoNO2byoxygenandotheratmosphericoxidants.Nitrogendioxidemayalsobegeneratedfromprocessesinvolvingnitricacid,nitrates,theuseofexplosives,andwelding.1.1Thistestmethodcoversthemanualdeterminationofnitrogendioxide(NO2)intheatmosphereintherangefrom4to10000g/m3(0.002to5ppm(v))whensamplingisconductedinfritted-tipbubblers.1.2ForconcentrationsofNO2inexcessof10mg/m3(5ppm(v)),asoccurinindustrialatmospheres,gasburnerstacks,orautomotiveexhaust,orforsamplesrelativelyhighinsulfurdioxidecontent,othermethodsshouldbeapplied.SeeforexampleTestMethodD1608.1.3Themaximumsamplingperiodis60minataflowrateof0.4L/min.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninbracketsareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Seealsoforotherprecautions.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_20
【页数】:5P.;A4
【正文语种】: