Comparison of polycyclic aromatic hydrocarbons and nitropolycyclic aromatic hydrocarbons in airborne particulates collected in downtown and suburban Kanazawa,Japan |
| |
| Institution: | 1. Center of Vehicles for Sustainable Mobility, Faculty of Mechanical Engineering, Czech Technical University in Prague, Technicka 4, 166 07 Prague, Czech Republic;2. Department of Vehicles and Engines, Faculty of Mechanical Engineering, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic;3. Technical Faculty, Czech University of Life Sciences, Kamýcká 129, 165 21 Prague, Czech Republic;4. Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Rozvojova 2/135, CZ-165 02 Prague 6, Suchdol, Czech Republic;5. Institute of Experimental Medicine of the Czech Academy of Sciences, Vídeňská 1083, Prague 4, Czech Republic;1. NIDA Center for Research & Development of Disaster Prevention & Management, School of Social and Environmental Development, National Institute of Development Administration (NIDA), 118 Moo 3, Sereethai Road, Klong-Chan, Bangkapi, Bangkok 10240, Thailand;2. Faculty of Humanities and Social Sciences, Songkhla Rajabhat University, Songkla 90000, Thailand;3. IRPC PCL 555/2 Energy Complex, Building B, 7th Floor, Vibhavadi Rangsit Rd., Chatuchak, Bangkok 10900, Thailand;1. Thermochemical Energy Conversion Laboratory, Department of Applied Physics and Electronics, Umeå University, SE-901 87 Umeå, Sweden;2. Department of Environmental Science and Analytical Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden;3. Volvo Group Trucks Technology, Advanced Technology & Research, Chalmers Teknikpark, SE-412 88 Gothenburg, Sweden;4. Department of Public Health and Clinical Medicine, Division of Medicine/Respiratory Medicine, Umeå University, SE-901 87 Umeå, Sweden;1. State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing 100871, PR China;2. Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA 90095, United States;1. Research Center for Atmospheric Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;3. National Engineering Research Center for Flue Gas Desulfurization, Department of Environmental Science and Engineering, Sichuan University, Chengdu, 610065, China;4. Air Quality Research Division, Science and Technology Branch, Environment and Climate Change Canada, Toronto, M3H 5T4, Canada;5. Chongqing Environmental Monitoring Center, Chongqing, 401147, China;6. School of Urban Construction and Environmental Engineering, Chongqing University, Chongqing, 400044, China;1. Department of Chemistry, Dayalbagh Educational Institute, Agra, 282005, India;2. Geosciences Division, Physical Research Laboratory, Navrangpura, Ahmedabad, 380009, India |
| |
| Abstract: | In this study, airborne particulates were collected at three sites, two in a downtown area and the other in a suburban area of Kanazawa, Japan in each season for 7 years. Two polycyclic aromatic hydrocarbons (PAHs), pyrene (Py) and benzoa]pyrene (BaP) and four nitropolycyclic aromatic hydrocarbons (NPAHs), 1-nitropyrene (NP) and 1,3-, 1,6-, and 1,8-dinitropyrenes (DNP) were determined by high-performance liquid chromatography with fluorescence and chemiluminescence detection. At the downtown sites, the mean concentration of each DNP was about two orders of magnitude lower than that of 1-NP and more than three orders of magnitude lower than those of Py and BaP. This tendency reflected the composition of PAHs and NPAHs in diesel-engine exhaust particulates. Concentrations of these PAHs and NPAHs were higher at the downtown sites than at the suburban site, suggesting the dilution of these compounds during the transportation from the downtown to the suburban area. The concentration ratios of NPAHs to PAHs were larger at the downtown sites than at the suburban site. Studies using UV light and sunlight showed that degradation of NPAHs was faster than that of PAHs. Thus, the lower concentrations of NPAHs in the suburban sites may be due to their being photodegraded faster than PAHs during the atmospheric transportation from the downtown area to the suburban area. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
