globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.atmosres.2018.06.015
Scopus记录号: 2-s2.0-85048990132
论文题名:
Characterization of PM2.5-bound nitrated and oxygenated polycyclic aromatic hydrocarbons in ambient air of Langfang during periods with and without traffic restriction
作者: Zhao J.; Zhang J.; Sun L.; Liu Y.; Lin Y.; Li Y.; Wang T.; Mao H.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 213
起始页码: 302
结束页码: 308
语种: 英语
英文关键词: Diurnal variation ; nPAHs ; oPAHs ; PM2.5 ; Traffic restriction
Scopus关键词: Aromatization ; Diesel locomotives ; Gasoline ; Hydrocarbons ; Particles (particulate matter) ; Phase interfaces ; Polycyclic aromatic hydrocarbons ; Diurnal variation ; nPAHs ; oPAHs ; PM2.5 ; Traffic restrictions ; Vehicles ; ambient air ; concentration (composition) ; diesel ; diurnal variation ; nitrate ; PAH ; particulate matter ; pollution policy ; traffic emission ; China ; Hebei ; Langfang ; Lamprididae
英文摘要: PM2.5-bound nitrated polycyclic aromatic hydrocarbons (nPAHs) and oxygenated polycyclic aromatic hydrocarbons (oPAHs) in ambient air were analysed in Langfang during periods with and without traffic restriction. During traffic restriction periods, 20% of gasoline vehicles and all diesel vehicles were restricted to travel within downtown. The 2-nitrofluoranthene/1-nitropyrene ratios obtained during the sampling periods implied that direct emission, especially from diesel vehicles, is the main source for the nPAHs in Langfang. The primary sources of nPAHs and oPAHs, including diesel vehicle emissions and gasoline vehicle emissions, were reduced in the P2 period. Thus, the concentrations of 1-nitropyrene, 3-nitrobenzanthrone, 9-nitrophenanthrene, 2-nitrofluorene, 7-nitrobenz[a]anthracene, 9,10-anthraquinone and benzanthrone were reduced up to 73.3% under this traffic restriction policy. However, the concentrations of 2-nitrofluoranthene and 9-fluorenone formed from gas phase reactions increased slightly. Meanwhile, the chemical profiles of nPAHs and oPAHs changed with traffic fleet variation, and cancer risk levels decreased under the traffic restriction policy. Hence, the traffic restriction policy did effect the ambient concentrations of nPAHs and oPAHs. © 2018 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108766
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Center for Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China; Tianjin Eco-Environmental Mornitoring Center, Tianjin, 300191, China

Recommended Citation:
Zhao J.,Zhang J.,Sun L.,et al. Characterization of PM2.5-bound nitrated and oxygenated polycyclic aromatic hydrocarbons in ambient air of Langfang during periods with and without traffic restriction[J]. Atmospheric Research,2018-01-01,213
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