International Journal of Environmental Research and Public Health Article Characteristics and Health Risks of Polycyclic Aromatic Hydrocarbons and Nitro-PAHs in Xinxiang, China in 2015 and 2017 Hao Zhang 1, Lu Yang 1, Xuan Zhang 1 , Wanli Xing 1, Yan Wang 1, Pengchu Bai 1 , Lulu Zhang 2, Ying Li 3, Kazuichi Hayakawa 2, Akira Toriba 4 and Ning Tang 2,5,* 1 Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan;
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[email protected]; Tel.: +81-76-234-4455 Abstract: Fine particulate matter (PM ) samples were collected in the summer and winter of 2015 Citation: Zhang, H.; Yang, L.; Zhang, 2.5 X.; Xing, W.; Wang, Y.; Bai, P.; Zhang, and 2017 in Xinxiang, China. Nine polycyclic aromatic hydrocarbons (PAHs) and three nitro-PAHs L.; Li, Y.; Hayakawa, K.; Toriba, A.; (NPAHs) in PM2.5 were detected via high-performance liquid chromatography (HPLC).