DOI: 10.1016/j.atmosenv.2015.02.033
Scopus记录号: 2-s2.0-84922975660
论文题名: The role of fossil fuel combustion on the stability of dissolved iron in rainwater
作者: Willey J ; D ; , Kieber R ; J ; , Humphreys J ; J ; , Rice B ; C ; , Hopwood M ; J ; , Avery G ; B ; , Mead R ; N
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 107 起始页码: 187
结束页码: 193
语种: 英语
英文关键词: Fossil fuel exhaust
; Iron speciation
; Marine iron cycle
; Rainwater trends
Scopus关键词: Coal combustion
; Dissolution
; Emission control
; Fossil fuels
; Fuels
; Iron
; Molecular oxygen
; Oxidation
; Precipitation (meteorology)
; Rain
; Coastal regions
; Combustion emissions
; Fossil fuel combustion
; Iron cycle
; Iron speciations
; Organic ligands
; Rainwater trends
; Variable factors
; Iron compounds
; fossil fuel
; hydrogen peroxide
; iron
; organic compound
; rain
; combustion
; concentration (composition)
; exhaust emission
; fossil fuel
; hydrogen peroxide
; iron
; oxidation
; precipitation (chemistry)
; rainwater
; speciation (chemistry)
; wet deposition
; aerosol
; air pollution control
; Article
; combustion
; exhaust gas
; molecular stability
; oceanic regions
; oxidation kinetics
; pH
; priority journal
; United States
; wet deposition
; Atlantic Coast [North America]
; Atlantic Coast [United States]
; 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: The concentration of dissolved Fe(II) has decreased in coastal NC rainwater because of less complexation and stabilization of Fe(II) (aq) by automobile and coal combustion emissions. Better emission control has removed stabilizing organic ligands hence dissolved Fe(II) currently occurs more as inorganic iron, which is not protected against oxidation. Increasing rainwater pH allows oxidation by molecular O2 in addition to H2O2 and also increases the ratio of the ion pair Fe(OH)+ to Fe(II) free ion, which increases the oxidation rates by both H2O2 and molecular oxygen. The concentration of H2O2 in rain has increased; hydrogen peroxide is the primary oxidant of inorganic Fe(II) in precipitation. The East Coast of the USA is also receiving less rain of terrestrial origin, which tends to be higher in dissolved iron and organic compounds. All these factors operate in the same direction and contribute to the lower concentrations and lack of stability of Fe(II) in rainwater currently observed. Results of this study suggest that wet deposition of soluble Fe(II) is an episodic, temporally variable factor in the iron cycle in oceanic regions adjacent to developed or developing coastal regions. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81894
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, NC, United States; University of Southampton, National Oceanographic Centre Southampton, Southampton, United Kingdom
Recommended Citation:
Willey J,D,, Kieber R,et al. The role of fossil fuel combustion on the stability of dissolved iron in rainwater[J]. Atmospheric Environment,2015-01-01,107