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pubmed-article:17688002pubmed:dateCreated2007-8-10lld:pubmed
pubmed-article:17688002pubmed:abstractTextIn this study, a correction was developed for the aethalometer to measure real-time black carbon (BC) concentrations in an environment dominated by fresh diesel soot. The relationship between the actual mass-specific absorption coefficient for BC and the BC-dependent attenuation coefficients was determined from experiments conducted in a diesel exposure chamber that provided constant concentrations of fine particulate matter (PM; PM(2.5); PM < 2.5 microm in aerodynamic diameter) from diesel exhaust. The aethalometer reported BC concentrations decreasing with time from 48.1 to 31.5 microg m(-3) when exposed to constant PM(2.5) concentrations of 55 +/- 1 microg m(-3) and b(scat) = 95 +/- 3 Mm(-1) from diesel exhaust. This apparent decrease in reported light-absorbing PM concentration was used to derive a correction K(ATN) for loading of strong light-absorbing particles onto or into the aethalometer filter tape, which was a function of attenuation of light at 880 nm by the embedded particles.lld:pubmed
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pubmed-article:17688002pubmed:authorpubmed-author:LarsonTimothy...lld:pubmed
pubmed-article:17688002pubmed:authorpubmed-author:ClaibornCandi...lld:pubmed
pubmed-article:17688002pubmed:authorpubmed-author:JimenezJorgeJlld:pubmed
pubmed-article:17688002pubmed:authorpubmed-author:GouldTimothyTlld:pubmed
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pubmed-article:17688002pubmed:authorpubmed-author:GundelLaraLlld:pubmed
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pubmed-article:17688002pubmed:year2007lld:pubmed
pubmed-article:17688002pubmed:articleTitleLoading effect correction for real-time aethalometer measurements of fresh diesel soot.lld:pubmed
pubmed-article:17688002pubmed:affiliationEULA-Chile, Environmental Sciences Center, University of Concepción, Concepción, Chile. jorgejimenez@udec.cllld:pubmed
pubmed-article:17688002pubmed:publicationTypeJournal Articlelld:pubmed