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@ARTICLE{Anttila:52923,
author = {Anttila, T. and Kiendler-Scharr, A. and Tillmann, R. and
Mentel, T. F.},
title = {{O}n the reactive uptake of gaseous compounds by
organic-coated aqueous aerosols: {T}heoretical analysis and
application to the heterogeneous hydrolysis of {N}2{O}5},
journal = {The journal of physical chemistry / A},
volume = {110},
issn = {1089-5639},
address = {Washington, DC},
publisher = {Soc.},
reportid = {PreJuSER-52923},
pages = {10435 - 10443},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {The presence of organic coatings on aerosols may have
important consequences to the atmospheric chemistry, in
particular to the N2O5 heterogeneous hydrolysis. This is
demonstrated by recent experiments which show that the
uptake of N2O5 by aqueous aerosols is slowed considerably
when an organic coating consisting of monoterpene oxidation
products is added on the particles. To treat the mechanisms
behind the suppression, an extension of the resistor model,
which has been widely applied in investigation of the
heterogeneous uptake by aerosols, was derived. The extension
accounts for dissolution, diffusion, and chemical reactions
in a multilayered organic coating, and it provides a
parametrization for the heterogeneous uptake by
organic-coated aerosols that can be applied in large-scale
models. Moreover, the framework was applied to interpret the
findings regarding the decreased uptake of N2O5 by the
organic-coated aerosols. Performed calculations suggested
that the reaction rate constant of N2O5 in the coating is
decreased by 3-5 orders of magnitude, in addition to which
the product of the solubility of N2O5 and its diffusion
coefficient in the coating is reduced more than an order of
magnitude compared to the corresponding value for the
aqueous phase. The results suggest also that the
accommodation coefficient of N2O5 to such coatings is no
more than a factor of 2 smaller than that to pure water
surfaces. Finally, the relevance of the results to the
atmospheric N2O5 heterogeneous hydrolysis is discussed and
implications to planning further laboratory studies focusing
on secondary organic aerosol formation are pointed out.},
keywords = {Aerosols: chemistry / Air Pollutants: chemistry /
Hydrolysis / Models, Chemical / Monoterpenes: chemistry /
Nitrogen Oxides: chemistry / Surface Properties / Water:
chemistry / Aerosols (NLM Chemicals) / Air Pollutants (NLM
Chemicals) / Monoterpenes (NLM Chemicals) / Nitrogen Oxides
(NLM Chemicals) / nitrogen pentoxide (NLM Chemicals) / Water
(NLM Chemicals) / J (WoSType)},
cin = {ICG-II},
ddc = {530},
cid = {I:(DE-Juel1)VDB48},
pnm = {Atmosphäre und Klima},
pid = {G:(DE-Juel1)FUEK406},
shelfmark = {Chemistry, Physical / Physics, Atomic, Molecular $\&$
Chemical},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:16942049},
UT = {WOS:000240149200009},
doi = {10.1021/jp062403c},
url = {https://juser.fz-juelich.de/record/52923},
}