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Titolo:
Comparison of sampling methods for semi-volatile organic carbon associatedwith PM2.5
Autore:
Lewtas, J; Pang, YB; Booth, D; Reimer, S; Eatough, DJ; Gundel, LA;
Indirizzi:
US EPA, Natl Exposure Res Lab, Seattle, WA 98101 USA US EPA Seattle WA USA 98101 Natl Exposure Res Lab, Seattle, WA 98101 USA Off Environm Assessment, Reg 10, Seattle, WA 98101 USA Off Environm Assessment Seattle WA USA 98101 eg 10, Seattle, WA 98101 USA Brigham Young Univ, Provo, UT 84602 USA Brigham Young Univ Provo UT USA 84602 ham Young Univ, Provo, UT 84602 USA Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 ley Lab, Berkeley, CA 94720 USA
Titolo Testata:
AEROSOL SCIENCE AND TECHNOLOGY
fascicolo: 1, volume: 34, anno: 2001,
pagine: 9 - 22
SICI:
0278-6826(200101)34:1<9:COSMFS>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYNUCLEAR AROMATIC-HYDROCARBONS; DIFFUSION DENUDER SAMPLER; CHEMICAL-COMPOSITION; SIZE DISTRIBUTION; AMBIENT AIR; PARTICULATE; SYSTEM; PHASE; GAS; ARTIFACT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Lewtas, J US EPA, Natl Exposure Res Lab, OEA-095,1200 6th Ave, Seattle, WA98101 USA US EPA OEA-095,1200 6th Ave Seattle WA USA 98101 e, WA 98101 USA
Citazione:
J. Lewtas et al., "Comparison of sampling methods for semi-volatile organic carbon associatedwith PM2.5", AEROS SCI T, 34(1), 2001, pp. 9-22

Abstract

This study evaluates the influence of denuder sampling methods and filter collection media on the measurement of semi-volatile organic carbon (SVOC) associated with PM2.5. Two types of collection media, charcoal (activated carbon) and XAD, were used both in diffusion denuders and impregnated back-up filters in two different samplers, the VAPS and the PC-BOSS. The two organic diffusion denuders were XAD-coated glass annular denuders and charcoal-impregnated cellulose fiber filter (CIF) denuders. In addition, recently developed XAD-impregnated quartz filters were compared to CIF filters as back-up filter collection media. The two denuder types resulted in equivalent measurement of particulate organic carbon and particle mass. The major difference observed between the XAD and charcoal BOSS denuders is the higher efficiency of charcoal for collection of more volatile carbon. This more volatile carbon does not contribute substantially to the particle mass or SVOC measured as OC on quartz filters downstream of the denuders. This volatile carbon does result in high OC concentrations observed in charcoal filters placed behind quartz filters downstream of the SAD denuders and would result in overestimating the SVOC in that configuration.

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Documento generato il 23/09/20 alle ore 15:47:46