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Titolo:
Airborne polycyclic aromatic hydrocarbons (PAH) in Bangkok urban air: PartII. Level and distribution
Autore:
Garivait, H; Polprasert, C; Yoshizumi, K; Reutergardh, LB;
Indirizzi:
Environm Res & Training Ctr, Pathumthani 12120, Thailand Environm Res & Training Ctr Pathumthani Thailand 12120 i 12120, Thailand Asian Inst Technol, Environm Engn Div, Pathumthani 12120, Thailand Asian Inst Technol Pathumthani Thailand 12120 athumthani 12120, Thailand Kyoritsu Womens Univ, Chiyoda Ku, Tokyo 101, Japan Kyoritsu Womens Univ Tokyo Japan 101 Univ, Chiyoda Ku, Tokyo 101, Japan Gifu Univ, River Basin Environm Res Ctr, Gifu, Japan Gifu Univ Gifu Japan fu Univ, River Basin Environm Res Ctr, Gifu, Japan
Titolo Testata:
POLYCYCLIC AROMATIC COMPOUNDS
fascicolo: 3, volume: 18, anno: 2001,
pagine: 325 - 350
SICI:
1040-6638(2001)18:3<325:APAH(I>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEMIVOLATILE ORGANIC-COMPOUNDS; ATMOSPHERIC PARTICULATE MATTER; SIZE DISTRIBUTIONS; AMBIENT AIR; PHILADELPHIA AEROSOL; SOURCE APPORTIONMENT; ELEMENTAL CARBON; SOOT PARTICLES; GAS-PHASE; POLLUTANTS;
Keywords:
airborne PAH; level and distribution; gas-particle partitioning; particle size dependency; Bangkok urban air;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
61
Recensione:
Indirizzi per estratti:
Indirizzo: Garivait, H Environm Res & Training Ctr, Technopolis Klong Luang, Pathumthani 12120, Thailand Environm Res & Training Ctr Technopolis Klong Luang Pathumthani Thailand 12120
Citazione:
H. Garivait et al., "Airborne polycyclic aromatic hydrocarbons (PAH) in Bangkok urban air: PartII. Level and distribution", POLYCYCL AR, 18(3), 2001, pp. 325-350

Abstract

The gas-particle partitioning and particle size distributions of airborne PAH in Bangkok urban air were investigated using an 8 stage size fractionating cascade impactor (Andersen "low volume" sampler) and a downstream XAD-2adsorbent tube for sample collection. Nine PAH classified as carcinogenic and co-carcinogenic compounds-Pyrene (PYR), Benz(a)Anthracene (BaA), Benzo(e)Pyrene (BeP), Dibenz(a,c)Anthracene (DBacA), Benzo(k)Fluoranthene (BkF), Benzo(a)Pyrene (BaP), Dibenz(a,h)Anthracene (DBahA), Benzo(ghi)Perylene (BghiP) and Trimethylcholanthrene (3MC)-were quantified. The lower molecular weight (MW) PAH such as PYR, BeP and BaA were present mainly in the gaseous phase (80%, 40% and 24%, respectively) while higher MW compounds were present almost totally in the particulate fraction. The results show that 30%-60% of each PAH by mass were found on particles smaller than 0.43 mum and more than 70% on particles with diameter less than 2.1 mum. In addition, the relationship between the particle/gas partition coefficient (K-p) and the sub-cooled liquid vapor pressure (p degrees (L)) was also determined to describe the gas-particle partitioning of those PAH compounds in a tropical atmosphere.

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Documento generato il 30/11/20 alle ore 19:31:24