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dc.contributor.authorSaha, M.
dc.contributor.authorMaharana, D.
dc.contributor.authorKurumisawa, R.
dc.contributor.authorTakada, H.
dc.contributor.authorYeo, B.G.
dc.contributor.authorRodrigues, A.C.
dc.contributor.authorZakaria, M.P.
dc.contributor.authorGiang, D.H.
dc.contributor.authorViet, P.H.
dc.contributor.authorBhattacharya, B.
dc.contributor.authorKumata, H.
dc.contributor.authorOkuda, T.
dc.contributor.authorHe, K.
dc.contributor.authorMa, Y.
dc.contributor.authorNakajima, F.
dc.date.accessioned18/2/2019
dc.date.accessioned2019-02-18T20:16:35Z
dc.date.available30/9/2017
dc.date.available2019-02-18T20:16:35Z
dc.date.issued2017
dc.identifier.citationAerosol and Air Quality Research, vol.17(9); 2017; 2247-2262
dc.identifier.issn1680-8584
dc.identifier.urihttps://doi.org/10.4209/aaqr.2017.05.0163
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/7922
dc.description.abstractThe most prevalent pollutant, polycyclic aromatic hydrocarbons (PAHs) is now plenteously distributed in the global atmosphere. We recently quantified 36 polycyclic aromatic hydrocarbons (PAHs) associated with aerosols (particulate matter: PM) in five Asian cities: Tokyo (Japan), Beijing (China), Kolkata (India), Hanoi (Vietnam), and Kuala Lumpur (Malaysia). Average atmospheric PAH concentrations (12 PAHs-ng m-3) increased in the order of Kuala Lumpur (2.99) Tokyo (3.95) < Hanoi (7.99) << Kolkata (63.5) << Beijing (142.8). The most abundant PAHs in PM samples in these cities were chrysene, benz[a]anthracene, benzofluoranthenes, benzo[a]pyrene, and benzo[e]pyrene. We used the PAH compositions, especially the relative abundances of alkylated PAHs, and hopanes to determine vehicle exhaust-derived PAHs, and levoglucosan as a tracer for biomass burning, especially from wood combustion. Vehicle exhaust contributed to atmospheric PAHs in all cities, indicated by higher ratios of (C3017)/total PAHs and MPAHs/PAHs than coal and wood combustion products. Coal combustion contributed also in winter aerosols in Beijing, indicated by higher abundance of isomers i.e., 1721 (H)-C30hopane (C3017) and 1721 (H)-C29hopane (C2917) signifying mass use of coal for heating. The ratio of levoglucosan/PAHs was high in Kuala Lumpur and Hanoi, suggesting greater inputs of PAHs from biomass burning there
dc.languageen
dc.publisherTaiwan Association for Aerosol Research
dc.relation.isreferencedbySCI
dc.titleSeasonal Trends of Atmospheric PAHs in Five Asian Megacities and Source Detection Using Suitable Biomarkers
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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