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Titolo:
Chemical characteristics of principal PM2.5 species in Chongju, South Korea
Autore:
Lee, HS; Kang, BW;
Indirizzi:
Seowon Univ, Dept Environm Sci, Chongju 361742, South Korea Seowon Univ Chongju South Korea 361742 Sci, Chongju 361742, South Korea Chongju Natl Coll Sci & Technol, Dept Environm Ind, Chongju 361719, South Korea Chongju Natl Coll Sci & Technol Chongju South Korea 361719 , South Korea
Titolo Testata:
ATMOSPHERIC ENVIRONMENT
fascicolo: 4, volume: 35, anno: 2001,
pagine: 739 - 746
SICI:
1352-2310(2001)35:4<739:CCOPPS>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
CARBON PARTICLE CONCENTRATIONS; RESPIRABLE PARTICULATE MATTER; SEASONAL-VARIATIONS; ELEMENTAL CARBON; AIR-POLLUTANTS; LOS-ANGELES; AEROSOL; LOCATIONS; ACIDITY; SULFATE;
Keywords:
PM2.5 (d(p) <= 2.5 mu m); SO42-; NO3-; NH4+; elemental carbon (EC); organic carbon (OC); urban area; South Korea;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Physical, Chemical & Earth Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Lee, HS Seowon Univ, Dept Environm Sci, Chongju 361742, South Korea SeowonUniv Chongju South Korea 361742 ongju 361742, South Korea
Citazione:
H.S. Lee e B.W. Kang, "Chemical characteristics of principal PM2.5 species in Chongju, South Korea", ATMOS ENVIR, 35(4), 2001, pp. 739-746

Abstract

Fine particles were collected over four seasons from October 1995 to August 1996 to evaluate the chemical characteristics of principal PM2.5 components in Chongju, South Korea. The annual mean concentrations of PM2.5 (d(p) less than or equal to 2.5 mum), sulfate, nitrate, ammonium, elemental carbon(EC) and organic carbon (OC) were 44.2, 8.22, 3.63, 2.84, 4.44 and 4.99 mugm(-3), respectively. The sum of the species measured from this study accounted for 50-62% of the PM2.5, mass. Sulfate was the most abundant species and constituted 13-23% of the PM2.5 mass. The EC and OC accounted for 17-28% of PM2.5 The correlation between OC and EC was strong, and the annual mean ratio of OC/EC was 1.12, suggesting that OC measured in the Chongju area may be emitted directly in particulate form as a primary aerosol. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 18:59:05