DOI: 10.1016/j.atmosenv.2016.12.027
Scopus记录号: 2-s2.0-85006240160
论文题名: Influences of O2 and O3 on the heterogeneous photochemical reaction of NO2 with humic acids
作者: Han C ; , Yang W ; , Yang H ; , Xue X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 152 起始页码: 77
结束页码: 84
语种: 英语
英文关键词: Competitive roles
; HONO
; Humic acids
; NO2
; O2
; O3
Scopus关键词: Biological materials
; Nitrogen oxides
; Organic acids
; Photochemical reactions
; Aging process
; Competitive roles
; Flow tube reactor
; Formation rates
; HONO
; Humic acid
; Simulated sunlight
; Uptake coefficients
; Inorganic acids
; humic acid
; oxygen
; ozone
; atmospheric chemistry
; chemical alteration
; chemical reaction
; concentration (composition)
; humic acid
; irradiation
; nitrogen dioxide
; organic acid
; oxygen
; ozone
; photochemistry
; aging
; Article
; atmosphere
; controlled study
; irradiation
; oxidation
; photochemistry
; priority journal
; simulation
; sunlight
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: Oxidizing components in the atmosphere may play competitive roles in the heterogeneous photochemical reaction of NO2 with humic acids (HA). Effects of O2 and O3 on the conversion of NO2 to HONO on HA under simulated sunlight were investigated using a flow tube reactor. The uptake coefficient (γ) of NO2 and the HONO formation rate decreased with the increase of the O2 content (0%–20%) and the O3 concentration (0–100 ppb). The HONO yield was observed to be independent of the O2 content, whereas it inversely depended on the O3 concentration. In addition, the aging process of HA by O2 and O3 under irradiation resulted in the decrease in the reactivity of HA toward NO2, as shown by lower γ and HONO formation rate, while it has little influence on the HONO yield. Finally, the mechanism of role of O2 and O3 in the photochemical reaction of NO2 with HA was discussed in detail. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82220
Appears in Collections: 气候变化事实与影响
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作者单位: School of Metallurgy, Northeastern University, Shenyang, China
Recommended Citation:
Han C,, Yang W,, Yang H,et al. Influences of O2 and O3 on the heterogeneous photochemical reaction of NO2 with humic acids[J]. Atmospheric Environment,2017-01-01,152