Ambient concentrations and deposition rates of selected reactive nitrogen species and their contribution to PM2.5aerosols at three locations with contrasting land use in southwest China

doi:10.1016/j.envpol.2017.10.002

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Ambient concentrations and deposition rates of selected reactive nitrogen species and their contribution to PM2.5aerosols at three locations with contrasting land use in southwest China
	Song Ling1,2 ; Liu Xuejun 3; Skiba Ute 4; Zhu Bo1,2 ; Zhang Xifeng1,2 ; Liu Meiyu2 ; Twigg Marsailidh 4; Shen Jianlin 5; Dore Anthony 4; Reis Stefan 4
刊名	Environmental Pollution
	2018
卷号	233 页码:1164-1176
关键词	Aerosols Agriculture Air quality Atmospheric composition Deposition rates Economics Land use Nitrogen oxides
ISSN号	0269-7491
DOI	10.1016/j.envpol.2017.10.002
产权排序	1
文献子类	Article
英文摘要	The fast economic development of southwest China has resulted in significant increases in the concentrations of reactive nitrogen (Nr) in the atmosphere. In this study, an urban (Chengdu, CD), suburban (Shifang, SF) and agriculture (Yanting, YT) – dominated location in the Sichuan Province, southwest China, were selected to investigate the atmospheric composition of Nr, their concentrations and deposition rates. We measured Nr concentrations in precipitation (NH4+, NO3−and organic N (DON)), the gas phase (NH3and NO2), and the aerosol particles (PM2.5), and calculated their fluxes over a two year period (2014–2016). Total annual N deposition rates were 49.2, 44.7 and 19.8 kg N ha−1yr−1at CD, SF and YT, respectively. Ammonia concentrations were larger at the urban and suburban sites than the agricultural site (12.2, 14.9, and 4.9 μg N m−3at CD, SF and YT, respectively). This is consistent with the multitude of larger sources of NH3, including city garbage, livestock and traffic, in the urban and suburban areas. Monthly NO2concentrations were lower in warmer compared to the colder months, but seasonal differences were insignificant. Daily PM2.5concentrations ranged from 7.7 to 236.0, 5.0–210.4 and 4.2–128.4 μg m−3at CD, SF and YT, respectively, and showed significant correlations with fine particulate NH4+and NO3−concentrations. Ratios of reduced to oxidized N were in the range of 1.6–2.7. This implies that the control of reduced Nr especially in urban environments is needed to improve local air quality. Reduced nitrogen compounds dominate bulk and dry nitrogen deposition in southwest China and contribute considerably to PM2.5aerosol formation. © 2017 Elsevier Ltd
电子版国际标准刊号	1873-6424
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/26620]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室综合测试与模拟中心
通讯作者	Zhu Bo
作者单位	1.Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu;Sichuan;610041, China; 2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu;Sichuan;610041, China; 3.College of Resources and Environmental Sciences, China Agricultural University, Beijing;100193, China; 4.Centre for Ecology and Hydrology, Bush Estate, Penicuik;Midlothian;EH26 0QB, United Kingdom; 5.Key Laboratory of Agro-Ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha;Hunan;410125, China
推荐引用方式 GB/T 7714	Song Ling,Liu Xuejun,Skiba Ute,et al. Ambient concentrations and deposition rates of selected reactive nitrogen species and their contribution to PM2.5aerosols at three locations with contrasting land use in southwest China[J]. Environmental Pollution,2018,233:1164-1176.
APA	Song Ling.,Liu Xuejun.,Skiba Ute.,Zhu Bo.,Zhang Xifeng.,...&Fowler David.(2018).Ambient concentrations and deposition rates of selected reactive nitrogen species and their contribution to PM2.5aerosols at three locations with contrasting land use in southwest China.Environmental Pollution,233,1164-1176.
MLA	Song Ling,et al."Ambient concentrations and deposition rates of selected reactive nitrogen species and their contribution to PM2.5aerosols at three locations with contrasting land use in southwest China".Environmental Pollution 233(2018):1164-1176.