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Titolo:
DETERMINATION OF THE PARTICLE-SIZE DISTRIBUTION AND CHEMICAL-COMPOSITION OF SEMIVOLATILE ORGANIC-COMPOUNDS IN ATMOSPHERIC FINE PARTICLES WITH A DIFFUSION DENUDER SAMPLING SYSTEM
Autore:
TANG H; LEWIS EA; EATOUGH DJ; BURTON RM; FARBER RJ;
Indirizzi:
BRIGHAM YOUNG UNIV,DEPT CHEM PROVO UT 84602 US EPA RES TRIANGLE PK NC 27711 SO CALIF EDISON CO ROSEMEAD CA 91770
Titolo Testata:
Atmospheric environment
fascicolo: 5, volume: 28, anno: 1994,
pagine: 939 - 947
SICI:
1352-2310(1994)28:5<939:DOTPDA>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
AEROSOL;
Keywords:
PARTICULATE ORGANIC COMPOUNDS; HIGH-VOLUME DENUDER; ORGANIC SAMPLING ARTIFACTS; SEMIVOLATILE ORGANIC COMPOUNDS; HIGH-VOLUME VIRTUAL IMPACTOR; PARTICLE SIZE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
H. Tang et al., "DETERMINATION OF THE PARTICLE-SIZE DISTRIBUTION AND CHEMICAL-COMPOSITION OF SEMIVOLATILE ORGANIC-COMPOUNDS IN ATMOSPHERIC FINE PARTICLES WITH A DIFFUSION DENUDER SAMPLING SYSTEM", Atmospheric environment, 28(5), 1994, pp. 939-947

Abstract

Correct assessment of the factors associated with visibility impairment is dependent on accurate determination of the chemical composition as a function of size of particles present in the atmosphere. Collection of particles on a filter results in underestimation of particulate organic compounds due to losses from the semi-volatile organic fraction during sample collection, i.e. a ''negative sampling artifact''. These semi-volatile organic compounds lost from particles collection a filter can be correctly measured using a diffusion denuder sampling system. This paper describes a multi-system, multi-channel, high-volume diffusion denuder sampler for the accurate determination of the particlesize distribution and chemical composition of semi-volatile organic compounds in atmospheric fine particles. Data obtained in Provo, UT andLos Angeles, CA on the chemical composition and particle size distribution of semi-volatile organic compounds in atmospheric fine particlesindicate that the majority of the semi-volatile organic compounds lost from particles during sampling were present in particles in the 0.4-0.8 mum size range in the atmospheres sampled. Organic compounds lost from the particles during sampling include paraffinic compounds, aromatic compounds and organic acids and esters.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 07:44:54