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Adsorption and Reaction of Trace Gas-Phase Organic Compounds on Atmospheric Water Film Surfaces: A Critical Review

Donaldson, D. J., Valsaraj, Kalliat T.·2010·Environmental Science & Technology

Abstract

The air-water interface in atmospheric water films of aerosols and hydrometeors (fog, mist, ice, rain, and snow) presents an important surface for the adsorption and reaction of many organic trace gases and gaseous reactive oxidants (hydroxyl radical (OH(.)), ozone (O(3)), singlet oxygen (O(2)((1)Delta(g))), nitrate radicals (NO(3)(.)), and peroxy radicals (RO(2)(.)). Knowledge of the air-water interface partition constant of hydrophobic organic species is necessary for elucidating the significance of the interface in atmospheric fate and transport. Various methods of assessing both experimental and theoretical values of the thermodynamic partition constant and adsorption isotherm are described in this review. Further, the reactivity of trace gases with gas-phase oxidants (ozone and singlet oxygen) at the interface is summarized. Oxidation products are likely to be more water-soluble and precursors for secondary organic aerosols in hydrometeors. Estimation of characteristic times shows that heterogeneous photooxidation in water films can compete effectively with homogeneous gas-phase reactions for molecules in the atmosphere. This provides further support to the existing thesis that reactions of organic compounds at the air-water interface should be considered in gas-phase tropospheric chemistry.

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Metadata

Authors
Donaldson, D. J., & Valsaraj, K. T.
Venue
Environmental Science & Technology
Published
2010-01-08
Volume
44
Issue
3
Pages
865-873
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2028474154
Cited by
185
References
0
FWCI
11.03
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Adsorption and Reaction of Trace Gas-Phase Organic Compounds on Atmospheric Water Film Surfaces: A Critical Review. https://app.cochat.ai/papers/10.1021/es902720s
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Donaldson, D. J., & Valsaraj, K. T. (2010). Adsorption and Reaction of Trace Gas-Phase Organic Compounds on Atmospheric Water Film Surfaces: A Critical Review. Environmental Science & Technology. https://doi.org/10.1021/es902720s

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