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Manganese-Catalyzed Autoxidation of Dissolved Sulfur Dioxide in the Atmospheric Aqueous Phase

Berglund, Johan and Elding, Lars Ivar LU (1995) In Atmospheric Environment 29(12). p.1379-1391
Abstract (Swedish)
Autoxidation of SO2(aq) in the presence of manganese(II) is one of the important pathways for sulfuric acid formation in atmospheric clouds and fogs. Recent experimental results indicating that the catalyzed reaction takes place via a complex free-radical mechanism are discussed. Previous literature is reviewed in the light of this mechanism. Under atmospheric conditions of low total concentrations of manganese(II) ( < 2 × 10−5 M) and sulfur(IV) ( ≤ 10−5 M) and 2.5 < pH < 5, the rate law for conversion of SO2(aq) to SO3(aq) is reduced to d[S(IV)]/dt = k[Mn(II)][S(IV)], where [S(IV)] denotes the total concentration. A value of the overall rate constant k of 1.4 × 103 M−1s−1 is recommended for use in atmospheric model... (More)
Autoxidation of SO2(aq) in the presence of manganese(II) is one of the important pathways for sulfuric acid formation in atmospheric clouds and fogs. Recent experimental results indicating that the catalyzed reaction takes place via a complex free-radical mechanism are discussed. Previous literature is reviewed in the light of this mechanism. Under atmospheric conditions of low total concentrations of manganese(II) ( < 2 × 10−5 M) and sulfur(IV) ( ≤ 10−5 M) and 2.5 < pH < 5, the rate law for conversion of SO2(aq) to SO3(aq) is reduced to d[S(IV)]/dt = k[Mn(II)][S(IV)], where [S(IV)] denotes the total concentration. A value of the overall rate constant k of 1.4 × 103 M−1s−1 is recommended for use in atmospheric model calculations.
Keywords
Autoxidation; catalysis; manganese; sulfur dioxide; radicals; synergism; atmospheric droplets (Less)
Abstract
Autoxidation of SO2(aq) in the presence of manganese(II) is one of the important pathways for sulfuric acid formation in atmospheric clouds and fogs. Recent experimental results indicating that the catalyzed reaction takes place via a complex free-radical mechanism are discussed. Previous literature is reviewed in the light of this mechanism. Under atmospheric conditions of low total concentrations of manganese(II) ( < 2 × 10−5 M) and sulfur(IV) ( ≤ 10−5 M) and 2.5 < pH < 5, the rate law for conversion of SO2(aq) to SO3(aq) is reduced to d[S(IV)]/dt = k[Mn(II)][S(IV)], where [S(IV)] denotes the total concentration. A value of the overall rate constant k of 1.4 × 103 M−1s−1 is recommended for use in atmospheric model calculations.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Autoxidation, Catalysis, Manganese, Sulfur dioxide, Radicals, Synergism, Atmospheric droplets, Autoxidation, Catalysis, Manganese, Sulfur dioxide, Radicals, Synergism, Atmospheric droplets, Sulfuric acid formation, Acid rain
in
Atmospheric Environment
volume
29
issue
12
pages
12 pages
publisher
Elsevier
external identifiers
  • scopus:0028989372
ISSN
1352-2310
DOI
10.1016/1352-2310(95)91318-M
language
English
LU publication?
yes
id
7870b827-3c89-42ac-a4c3-0583a98a75e6
date added to LUP
2017-01-04 21:57:10
date last changed
2017-07-23 05:22:51
@article{7870b827-3c89-42ac-a4c3-0583a98a75e6,
  abstract     = {Autoxidation of SO2(aq) in the presence of manganese(II) is one of the important pathways for sulfuric acid formation in atmospheric clouds and fogs. Recent experimental results indicating that the catalyzed reaction takes place via a complex free-radical mechanism are discussed. Previous literature is reviewed in the light of this mechanism. Under atmospheric conditions of low total concentrations of manganese(II) ( &lt; 2 × 10−5 M) and sulfur(IV) ( ≤ 10−5 M) and 2.5 &lt; pH &lt; 5, the rate law for conversion of SO2(aq) to SO3(aq) is reduced to d[S(IV)]/dt = k[Mn(II)][S(IV)], where [S(IV)] denotes the total concentration. A value of the overall rate constant k of 1.4 × 103 M−1s−1 is recommended for use in atmospheric model calculations.},
  author       = {Berglund, Johan and Elding, Lars Ivar},
  issn         = {1352-2310},
  keyword      = {Autoxidation,Catalysis,Manganese,Sulfur dioxide,Radicals,Synergism,Atmospheric droplets,Autoxidation,Catalysis,Manganese,Sulfur dioxide,Radicals,Synergism,Atmospheric droplets,Sulfuric acid formation,Acid rain},
  language     = {eng},
  month        = {01},
  number       = {12},
  pages        = {1379--1391},
  publisher    = {Elsevier},
  series       = {Atmospheric Environment},
  title        = {Manganese-Catalyzed Autoxidation of Dissolved Sulfur Dioxide in the Atmospheric Aqueous Phase},
  url          = {http://dx.doi.org/10.1016/1352-2310(95)91318-M},
  volume       = {29},
  year         = {1995},
}