【英文标准名称】:StandardTestMethodsforAromaticsinMineralSpiritsbyGasChromatography
【原文标准名称】:气相色谱法测定溶剂油中芳烃的标准试验方法
【标准号】:ASTMD3257-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D01.35
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:芳族化合物;芳烃;含量测定;涂料;溶剂;试验
【英文主题词】:aromaticsinmineralspirits;ethylbenzeneinmineralspirits;gaschromatography(GC);mineralspirits
【摘要】:Thesetestmethodsweredevelopedtomeasurethetypesandamountsofaromaticsinmineralspiritstodeterminecompliancewithairpollutionregulationsthatrestrictthearomaticcontentofsolvents.Theyhavebeendemonstratedtobeworkableandtoproduceaccurateresults.However,duetothesensitivityoftheteststooperatingvariables,somelaboratorieshavinglimitedexperiencewithgaschromatographicanalysesofhydrocarbonsmayexperiencedifficultyinperformingthetests.1.1Thesetestmethodscoverthedeterminationofethylbenzeneandtotaleight-carbon(C8)andheavieraromaticsintheconcentrationrangefrom0.1to30%inmineralspiritshavingadistillationrangefrom149to210176;C(300to410176;F)asdeterminedbyTestMethodD86.Theprocedurespermittheidentificationandcalculationofconcentrationsofaromaticcomponentsto0.1volume%.1.2Itisrecognizedbyanalyticalchemiststhatasinglecolumngaschromatographyanalysisofanunknownsampleisrisky.Insuchcases,multipleanddifferentanalyticaltechniquesmustbeusedforabsolutelypositiveidentification,forexample,severaldifferentgaschromatographycolumns,gaschromatography/massspectrometer,orgaschromatography/infrared,etc.Inthesetestmethodsthematerialisknownandisclearlydefined.1.3Oxygenatedcompounds,ifpresent,mayinterfereandcauseerroneousresults.Suchoxygenatedcompoundsarenotnormallypresentinmineralspirits.1.4Threetestmethodsarecoveredasfollows:1.4.1TestMethodAmeasurementofethylbenzenecontent,C8plushigheraromatics(exceptethylbenzene),andtotalaromaticsbymeansofasinglepackedcolumngaschromatographicanalysis.1.4.2TestMethodBmeasurementofethylbenzenecontentbymeansofarapidpackedcolumngaschromatographicanalysis.1.4.3TestMethodCmeasurementofethylbenzenecontent,C8plushigheraromatics(exceptethylbenzene)andtotalaromaticsbymeansofacapillarycolumngaschromatographicanalysis.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Forpurposesofdeterminingconformanceofanobservedoracalculatedvalueusingthistestmethodtorelevantspecifications,testresult(s)shallberoundedoff"tothenearestunit"inthelastright-handdigitusedinexpressingthespecificationlimit,inaccordancewiththerounding-offmethodofPracticeE29.1.7Forhazardinformationandguidance,seethesupplier''sMaterialSafetyDataSheet.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E33
【国际标准分类号】:87_060_30
【页数】:8P.;A4
【正文语种】:


【英文标准名称】:CommonNameforthePestControlChemical3-(5-(1,1-Dimethylethyl)-1,3,4-thiadiazol-2-yl)-4-hydroxy-1-methyl-2-imidazolidinone"Buthidazole"
【原文标准名称】:丁噻咪草酮(buthidazol)－(除草剂)通用名称
【标准号】:ANSIK62.191-1976
【标准状态】:作废
【国别】:美国
【发布日期】:1976
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:农药
【英文主题词】:Pesticides
【摘要】:
【中国标准分类号】:G25
【国际标准分类号】:65_100_99
【页数】:2P;A4
【正文语种】:英语