title: PAH contents in road dust on principal roads collected nationwide in Japan and their influential factors.
abstract: Fifty-four road dust samples were collected from principal roads (n = 37) and residential roads (n = 17) nationwide in Japan from March 2010 to November 2012. Sixteen polycyclic aromatic hydrocarbons (PAHs) and ignition loss (IL) were determined. The total PAH contents ranged from 62 to 6,325 ng g(-1) with a geometric mean of 484 ng g(-1). The IL ranged from 0.8 to 17% with a mean of 6%. The PAH contents were correlated with the IL contents, and the IL contents were dependent on the population density. From the PAH pattern analysis, the PAHs from road dust are considered to be mainly from diesel emissions.
authors.affiliation: Graduate School of Engineering, Hiroshima University, Higashihiroshima, 1-4-1, Higashihirohima 739-8527, Japan E-mail: ojaki@hiroshima-u.ac.jp.
authors.forename: Noriatsu
authors.initials: N
authors.lastname: Ozaki
authors.affiliation: Hiroshima University, Higashihiroshima, 1-4-1, Higashihirohima 739-8527, Japan Currently: Okayama Prefectural Bureau, Uchiyamashita, 2-4-6, Kita-ku, Okayama 700-8570, Japan.
authors.forename: Yuma
authors.initials: Y
authors.lastname: Akagi
authors.affiliation: Graduate School of Engineering, Hiroshima University, Higashihiroshima, 1-4-1, Higashihirohima 739-8527, Japan E-mail: ojaki@hiroshima-u.ac.jp.
authors.forename: Tomonori
authors.initials: T
authors.lastname: Kindaichi
authors.affiliation: Graduate School of Engineering, Hiroshima University, Higashihiroshima, 1-4-1, Higashihirohima 739-8527, Japan E-mail: ojaki@hiroshima-u.ac.jp.
authors.forename: Akiyoshi
authors.initials: A
authors.lastname: Ohashi
mesh_terms: D004391:Dust / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D007564:Japan; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D001335:Vehicle Emissions / Q000032:analysis*
chemical_list: D004391:Dust; D011084:Polycyclic Aromatic Hydrocarbons; D001335:Vehicle Emissions