| DOI: | 10.1016/j.atmosenv.2016.10.031
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| Scopus记录号: | 2-s2.0-84993949952
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| 论文题名: | Radiation fog chemical composition and its temporal trend over an eight year period |
| 作者: | Straub D; J
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| 刊名: | Atmospheric Environment
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| ISSN: | 0168-2563
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| EISSN: | 1573-515X
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| 出版年: | 2017
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| 卷: | 148 | | 起始页码: | 49
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| 结束页码: | 61
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| 语种: | 英语
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| 英文关键词: | Ammonia partitioning
; Multi-year trends
; Organic acids
; Radiation fog chemistry
; Total nitrogen
; Total organic carbon
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| Scopus关键词: | Ammonia
; Carbon
; Fog
; Nitrates
; Nitrogen
; Organic acids
; Chemical compositions
; Concentration change
; Low molecular weight organic acid
; Median concentration
; Multi-year trends
; Radiation fog
; Total nitrogen
; Total Organic Carbon
; Organic carbon
; acetic acid
; ammonia
; bicarbonate
; calcium ion
; carbonic acid
; carboxylic acid
; chloride
; formic acid
; glutaric acid
; magnesium
; magnesium ion
; maleic acid
; mesylic acid
; nitrate
; nitric acid
; nitrogen
; organic matter
; organic nitrogen
; oxalic acid
; phosphate
; potassium
; potassium ion
; propionic acid
; pyruvic acid
; sodium ion
; succinic acid
; sulfate
; sulfur
; valeric acid
; ammonia
; atmospheric chemistry
; chemical composition
; concentration (composition)
; fog
; ion
; nitrogen
; organic acid
; seasonal variation
; spatiotemporal analysis
; temporal analysis
; total organic carbon
; aerosol
; Article
; biomass
; chemical composition
; combustion
; controlled study
; fog
; meteorology
; molecular weight
; partial pressure
; Pennsylvania
; pH
; phase partitioning
; priority journal
; radiation
; radiation fog
; seasonal variation
; temperature sensitivity
; total organic carbon
; water content
; Pennsylvania
; United States
|
| Scopus学科分类: | Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
|
| 英文摘要: | Radiation fog samples have been collected at a rural site in Central Pennsylvania from 2007 through 2015 in order to document chemical composition, assess concentration changes over time, and to provide insight into emission sources that influence the region. The collection of samples over multiple years makes this one of the few long duration radiation fog studies that have been completed. During the course of the campaign, 146 samples were obtained and analyzed for pH, major inorganic ions, low molecular weight organic acids, total organic carbon (TOC) and total nitrogen (TN). Ammonium (median concentration = 209 μN), sulfate (69 μN), calcium (51 μN), and nitrate (31 μN) were the most abundant inorganic ions, although these were present at much lower concentrations than for radiation fog studies conducted in other locations. Organic acids, of which formate (20 μM) and acetate (21 μM) were the most abundant, were closer in magnitude to measurements made during previous studies. Organic acids accounted for 15% of TOC, which had a median concentration of 6.6 mgC l−1. The median concentration of TN was 3.6 mgN l−1, 18% of which was determined to be organic nitrogen. Statistically significant decreasing trends from 2007 to 2015 were noted for sulfate, ammonium, chloride, and nitrate. For the same period, an increase in pH was observed. Seasonal trends were identified for a number of species as well. The partitioning of ammonia between the gas and aqueous phases was also investigated and found to deviate significantly from equilibrium. © 2016 Elsevier Ltd |
| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/82764
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Department of Earth and Environmental Sciences, Susquehanna University, 514 University Avenue, Selinsgrove, PA, United States
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| Recommended Citation: | |
Straub D,J. Radiation fog chemical composition and its temporal trend over an eight year period[J]. Atmospheric Environment,2017-01-01,148
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