Characteristics of PM 2.5 -Bound Polycyclic Aromatic Hydrocarbons and Nitro-Polycyclic Aromatic Hydrocarbons at A Roadside Air Pollution Monitoring Station in Kanazawa, Japan

Wanli Xing, Lulu Zhang, Lu Yang, Quanyu Zhou, Xuan Zhang, Akira Toriba, Kazuichi Hayakawa and Ning Tang
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Wanli Xing: Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
Lulu Zhang: Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
Lu Yang: Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
Quanyu Zhou: Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
Xuan Zhang: Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
Akira Toriba: Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan
Kazuichi Hayakawa: Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
Ning Tang: Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan

IJERPH, 2020, vol. 17, issue 3, 1-11

Abstract: Polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs (NPAHs) in PM 2.5 samples were collected at a roadside monitoring station in Kanazawa, Japan, in every season from 2017 to 2018. Nine PAHs and five NPAHs were determined using high-performance liquid chromatography with fluorescence detection and chemiluminescence detection, respectively. The mean concentrations of PAHs and NPAHs were highest in winter and lowest in summer. Fluoranthene and pyrene were the dominant PAHs and 1-nitropyrene was the dominant NPAH in all seasons, and these compounds were mainly emitted by diesel vehicles. The concentration ratio of benzo( a )pyrene (BaP) to benzo( ghi )perylene (BgPe) ((BaP)/(BgPe)) and of indeno(1,2,3- cd )pyrene (IDP) to the sum of IDP and benzo( ghi )perylene (BgPe) ((IDP)/((IDP)+(BgPe0) might still be useful indicators for identifying traffic emission sources today. Moreover, our results showed that the carcinogenic risk in all seasons was below the acceptable limit set by the WHO.

Keywords: polycyclic aromatic hydrocarbons; nitro-polycyclic aromatic hydrocarbons; roadside sampling; traffic emission; diagnostic ratios (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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