Development of benzene, toluene, ethylbenzene and xylenes certified gaseous reference materials
[摘要] Theworkdescribestheproductionofcertifiedgaseousreferencematerialsofbenzene,toluene,ethylbenzeneandxylenes(BTEX)innitrogenfromthegravimetricproductionuptothelongtermstabilitytestsfollowedbythecertifyingstep.Theuncertaintyintheamountfractionsofthecompoundsinthesemixtureswasapproximately4%(relative)fortherangestudiedfrom2to16µmol/mol.AlsotheadsorptionoftheBTEXonthecylindersurfaceandthetubingwereinvestigatedaspotentialuncertaintysource...
[发布日期] [发布机构]
[效力级别] [学科分类] 物理（综合）
[关键词] [时效性]
