DOI: 10.1016/j.atmosenv.2013.11.043
Scopus记录号: 2-s2.0-84889583018
论文题名: Background-like nitrate in desert air
作者: Wu F ; , Zhang D ; , Cao J ; , Zhang T ; , An Z
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 84 起始页码: 39
结束页码: 43
语种: 英语
英文关键词: Nitrogen cycle
; Reactive nitrogen
; Soil emission
; Taklimakan desert
Scopus关键词: Dust
; Nitrates
; Nitrogen
; Soils
; Storms
; Atmospheric nitrogen
; Current modeling
; Environmental evolution
; High confidence
; Nitrogen cycles
; Reactive nitrogen
; Taklimakan desert
; Tropical forest
; Landforms
; nitrate
; nitrogen derivative
; desert
; dust
; dust storm
; nitrate
; nitrogen cycle
; nitrogen dioxide
; soil emission
; tropical forest
; aerosol
; air
; airborne particle
; article
; atmospheric deposition
; desert
; dust
; geological time
; humidity
; limit of detection
; nitrogen cycle
; particulate matter
; priority journal
; surface soil
; suspended particulate matter
; tropical rain forest
; troposphere
; China
; Taklimakan Desert
; Xinjiang Uygur
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: The atmospheric nitrogen cycle is a key process driving the earth's environmental evolution. Current model studies require knowledge of NOx soil emissions from various land types, but desert emissions remain unquantified or are not addressed with high confidence. Our measurements at two observatories in Taklimakan desert during a dust episode showed an approximately stable and dust-independent nitrate in the air. Its concentration estimated from PM2.5, PM10 and TSP samples under non-dust, floating dust and dust storm conditions was 3.81±1.24μgm-3, 2.95±0.69μgm-3, 4.99±1.71μgm-3, respectively, despite the more-than-one-order difference of dust loading. This concentration was much larger than that in remote marine and tropical forest air. Comprehensive investigation revealed a similar presence of nitrate in other desert air. The nitrate was hypothesized to be the consequence of the conversion of NOx released from desert soils. These results indicate a background-like nitrate and active reactions of nitrogen compounds in desert air. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80824
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Aerosol, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Science, Xi'an 710075, China; Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, Kumamoto 862-8502, Japan; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, China
Recommended Citation:
Wu F,, Zhang D,, Cao J,et al. Background-like nitrate in desert air[J]. Atmospheric Environment,2014-01-01,84