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DOI	10.1016/j.atmosres.2019.05.015
	The impact of sea-salt aerosols on particulate inorganic nitrogen deposition in the western Taiwan Strait region; China
	Wu S.-P.; Dai L.-H.; Zhu H.; Zhang N.; Yan J.-P.; Schwab J.J.; Yuan C.-S.
发表日期	2019
ISSN	0169-8095
起始页码	68
结束页码	76
卷号	228
英文摘要	Sea-salt aerosol (SSA)has significant impact on the formation of secondary nitrate and its dry deposition in the coastal region. In this study, size-segregated aerosols were collected for water-soluble ions analysis in the coastal cities and sea cruises in the western Taiwan Strait of China from 2016 to 2017 to investigate the impact of SSA on particulate inorganic N deposition. The size distributions of NH4 + were characterized by a unimodal pattern peaking at 0.44–1.0 μm while NO3 − exhibited typical bimodal distributions peaking at 0.44–1.0 μm and 2.5–10 μm. Furthermore, the fine mode peaks of NO3 − became insignificant or disappeared in summer and fall due to the volatilization and dissociation of NH4NO3 at higher temperatures. Elevated sea-salt contributions in the largest size bin (>16 μm)during sea cruises were attributed to vessel induced wave breaking, while there was no peak for NO3 − at this range due to its short atmospheric lifetime. Although the concentrations of particulate NH4 +-N showed higher levels than those of NO3 −-N for both coastal and marine aerosols, the dry deposition fluxes of the particulate NO3 −-N were significant higher than those of the particulate NH4 +-N due to their different size distributions. The contribution of SSA to particulate inorganic N deposition was estimated on average to be 20.33% and 36.91% in the coastal and offshore region, respectively, assuming all of the chlorine depletion was caused by the reaction between nitric acid and SSA in the coarse mode. In addition, dry deposition fluxes using constant deposition velocities for fine/coarse particles and NH4 +/NO3 − were higher than those using size-dependent dry deposition velocities. Considering the increasing human activities at the coastal urban zone in the western Taiwan Strait, the atmospheric N deposition could have an important ecological impact on the marine environment that is already under pressure from riverine inputs and urban waste discharges. © 2019 Elsevier B.V.
英文关键词	Inorganic nitrogen; Nitrogen deposition flux; Sea-salt aerosol; Size distribution
语种	英语
scopus关键词	Aerosols; Nitrogen; Offshore oil well production; Particle size analysis; Size distribution; Atmospheric lifetime; Bimodal distribution; Deposition velocities; Dry deposition fluxes; Dry deposition velocities; Inorganic nitrogen; Nitrogen deposition; Sea salt aerosol; Particles (particulate matter); aerosol; deposition; inorganic nitrogen; marine atmosphere; marine environment; particulate inorganic matter; sea salt; size distribution; spatial distribution; Taiwan Strait
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162290
作者单位	Center for Marine Environmental Chemistry and Toxicology, College of Environment and Ecology, Xiamen University, Xiamen, 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen, 361102, China; Key Laboratory of Global Change and Marine-Atmospheric chemistry, Third Institute of Oceanography, Xiamen, 361005, China; Atmospheric Sciences Research Center, University at Albany, SUNY, Albany, 12203, United States; Institute of Environmental Engineering, Sun Yat-Sen University, Kaohsiung, 80424, China
推荐引用方式 GB/T 7714	Wu S.-P.,Dai L.-H.,Zhu H.,et al. The impact of sea-salt aerosols on particulate inorganic nitrogen deposition in the western Taiwan Strait region; China[J],2019,228.
APA	Wu S.-P..,Dai L.-H..,Zhu H..,Zhang N..,Yan J.-P..,...&Yuan C.-S..(2019).The impact of sea-salt aerosols on particulate inorganic nitrogen deposition in the western Taiwan Strait region; China.Atmospheric Research,228.
MLA	Wu S.-P.,et al."The impact of sea-salt aerosols on particulate inorganic nitrogen deposition in the western Taiwan Strait region; China".Atmospheric Research 228(2019).