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Titolo:
FINE PARTICULATE ORGANIC MATERIAL IN THE LOS-ANGELES BASIN - I - ASSESSMENT OF THE HIGH-VOLUME BRIGHAM-YOUNG-UNIVERSITY ORGANIC-SAMPLING SYSTEM, BIG BOSS
Autore:
CUI WX; EATOUGH DJ; EATOUGH NL;
Indirizzi:
BRIGHAM YOUNG UNIV,DEPT CHEM & BIOCHEM PROVO UT 84602 BRIGHAM YOUNG UNIV,DEPT CHEM & BIOCHEM PROVO UT 84602 CALIF POLYTECH STATE UNIV SAN LUIS OBISPO,DEPT CHEM SAN LUIS OBISPO CA 93407
Titolo Testata:
Journal of the Air & Waste Management Association
fascicolo: 11, volume: 48, anno: 1998,
pagine: 1024 - 1037
SICI:
1096-2247(199803)48:11<1024:FPOMIT>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYCYCLIC AROMATIC-HYDROCARBONS; GAS-PARTICLE DISTRIBUTIONS; DIFFUSION DENUDER SAMPLER; CHEMICAL-COMPOSITION; SIZE DISTRIBUTION; LIGHT EXTINCTION; NATIONAL-PARK; AEROSOL; COLLECTION; VAPORS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
40
Recensione:
Indirizzi per estratti:
Citazione:
W.X. Cui et al., "FINE PARTICULATE ORGANIC MATERIAL IN THE LOS-ANGELES BASIN - I - ASSESSMENT OF THE HIGH-VOLUME BRIGHAM-YOUNG-UNIVERSITY ORGANIC-SAMPLING SYSTEM, BIG BOSS", Journal of the Air & Waste Management Association, 48(11), 1998, pp. 1024-1037

Abstract

A multi-system, high-volume, parallel plate diffusion denuder BrighamYoung University Organic Sampling System (BIG BOSS) was tested using collocated samplers at the Pico Rivera Monitoring Station of the SouthCoast Air Quality Management District, South Coast Air Basin, in September 1994. Six-hr daytime and 9-hr nighttime samples were collected with a how of about 200 L/min through each of the three systems designed to collect particles smaller than 2.5, 0.8, and 0.4 mu m in a diffusion denuder sampler. Efficiency for the removal of gas phase organic compounds by the diffusion denuder was evaluated using both theoreticalpredictions and field measurements. Both measured and calculated dataindicate high denuder efficiency for the removal of gas phase aromatic and paraffinic compounds. The precision of the BIG BOSS was evaluated using collocated samplers. The precision of determination of total carbon and elemental carbon retained by a quartz filter or of semi-volatile carbonaceous material lost from particles during sampling averaged +/-7%. The precision of determination of individual organic compounds averaged +/-10%. An average of 42 and 62% of the particulate organicmaterial was semi-volatile organic compounds (SVOCs) lost from particles during sampling for daytime and nighttime samples, respectively. This ''negative'' sampling artifact was an order of magnitude larger than the ''positive'' quartz filter artifact due to adsorption of gas phase organic material. Daytime concentrations of fine particulate elemental carbon and nonvolatile organic carbon were higher than nighttime concentrations, but nighttime fine particles contained more semi-volatile organic material than daytime.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 07:37:27