title: Source contribution analysis of surface particulate polycyclic aromatic hydrocarbon concentrations in northeastern Asia by source-receptor relationships.
abstract: We analyzed the source-receptor relationships for particulate polycyclic aromatic hydrocarbon (PAH) concentrations in northeastern Asia using an aerosol chemical transport model. The model successfully simulated the observed concentrations. In Beijing (China) benzo[a]pyren (BaP) concentrations are due to emissions from its own domain. In Noto, Oki and Tsushima (Japan), transboundary transport from northern China (>40 °N, 40-60%) and central China (30-40 °N, 10-40%) largely influences BaP concentrations from winter to spring, whereas the relative contribution from central China is dominant (90%) in Hedo. In the summer, the contribution from Japanese domestic sources increases (40-80%) at the 4 sites. Contributions from Japan and Russia are additional source of BaP over the northwestern Pacific Ocean in summer. The contribution rates for the concentrations from each domain are different among PAH species depending on their particulate phase oxidation rates. Reaction with O3 on particulate surfaces may be an important component of the PAH oxidation processes.
authors: Asia Center for Air Pollution Research, 1182, Sowa, Nishi-ku, Niigatashi, Niigata 950-2144, Japan. Electronic address: inomata@acap.asia.
authors: Yayoi
authors: Y
authors: Inomata
authors: Mizuo
authors: M
authors: Kajino
authors: Keiichi
authors: K
authors: Sato
authors: Toshimasa
authors: T
authors: Ohara
authors: Jun-ichi
authors: J
authors: Kurokawa
authors: Hiromasa
authors: H
authors: Ueda
authors: Ning
authors: N
authors: Tang
authors: Kazuichi
authors: K
authors: Hayakawa
authors: Tsuyoshi
authors: T
authors: Ohizumi
authors: Hajime
authors: H
authors: Akimoto
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data; D001208:Asia; D004784:Environmental Monitoring; D008956:Models, Chemical; D052638:Particulate Matter / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter; D011084:Polycyclic Aromatic Hydrocarbons
keywords: Model simulation; Northeast Asia; Particulate PAHs; Source receptor relationships; Transboundary transport