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Does atmospheric processing of saturated hydrocarbon surfaces by NO3 lead to volatilization? Knopf, Daniel A.; Mak, Jackson; Gross, Simone; Bertram, Allan K.
Abstract
The heterogeneous oxidation of a saturated hydrocarbon monolayer by NO3 was studied. A flow tube reactor coupled to chemical ionization mass spectrometry was used to determine the reactive uptake coefficient of NO3 on these surfaces, and X-ray photoelectron spectroscopy (XPS) was used to investigate surface oxidation and to determine if exposure to NO3 leads to volatilization of the organic substrate. The uptake coefficient of NO3 by an alkane monolayer is about (8.8 ± 2.5) × 10−4, which may lead to competitive oxidation compared with OH, due to the higher atmospheric abundance of NO3 under certain conditions. The XPS results are consistent with the formation of 1) C-O groups, 2) ketones or aldehydes, and 3) carboxylic groups. The XPS results also suggest that NO3 does not rapidly volatilize the organic surface: even under extremely polluted conditions, maximum 10% of the organic layer is volatilized. An edited version of this paper was published by AGU. Copyright 2006 American Geophysical Union.
Item Metadata
Title |
Does atmospheric processing of saturated hydrocarbon surfaces by NO3 lead to volatilization?
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Creator | |
Publisher |
American Geophysical Union
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Date Issued |
2006-09
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Description |
The heterogeneous oxidation of a saturated hydrocarbon monolayer by NO3 was studied. A flow tube reactor coupled to chemical ionization mass
spectrometry was used to determine the reactive uptake coefficient of NO3 on these surfaces, and X-ray photoelectron spectroscopy (XPS) was used
to investigate surface oxidation and to determine if exposure to NO3 leads to volatilization of the organic substrate. The uptake coefficient of
NO3 by an alkane monolayer is about (8.8 ± 2.5) × 10−4, which may lead to competitive oxidation compared with OH, due to the higher atmospheric
abundance of NO3 under certain conditions. The XPS results are consistent with the formation of 1) C-O groups, 2) ketones or aldehydes, and 3)
carboxylic groups. The XPS results also suggest that NO3 does not rapidly volatilize the organic surface: even under extremely polluted conditions,
maximum 10% of the organic layer is volatilized.
An edited version of this paper was published by AGU. Copyright 2006 American Geophysical Union.
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Genre | |
Type | |
Language |
eng
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Date Available |
2016-11-07
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0041864
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URI | |
Affiliation | |
Citation |
Knopf, Daniel A., Mak, Jackson, Gross, Simone, Bertram, Alan K. 2006. Does atmospheric processing of saturated hydrocarbon surfaces by NO3 lead to volatilization? Geophysical Research Letters 33(17) L17816/1-L17816/5.
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Publisher DOI |
10.1029/2006GL026884
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Peer Review Status |
Reviewed
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Scholarly Level |
Faculty
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Copyright Holder |
Bertram, Allan K.
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International