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Competition between Atmospherically Relevant Fatty Acid Monolayers at the Air/Water Interface
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Section:Abstract
Competition and oxidation of fatty acids spread at the air/water interface were investigated using surface-specific, broad-bandwidth, sum frequency generation spectroscopy. At the air/water interface, a monolayer of oleic acid replaced a monolayer of deuterated palmitic acid at equilibrium spreading pressure. Subsequent oxidation of the oleic acid monolayer with ozone resulted in products more water soluble than the palmitic acid; therefore, the palmitic acid monolayer reformed at the surface. Results indicate that the surfactants on the surface of fat-coated tropospheric aerosols will only possess oxidized acyl chains after all less soluble species in the aqueous subphase have been removed through the processes of replacement at the surface and atmospheric oxidation.
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This article has been cited by 14 ACS Journal articles (5 most recent appear below).
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Xibing He, Olgun Guvench, Alexander D. MacKerell Jr. and Michael L. KleinThe Journal of Physical Chemistry B2010 114 (30), 9787-9794Molecular dynamics simulations with the CHARMM atomistic force field have been used to study monolayers of a series of linear alkylbenzene sulfonates (LAS) at the water/air interface. Both the numbers of carbon atoms in the LAS alkyl tail (1 to 11) and ...
Time Resolved Studies of Interfacial Reactions of Ozone with Pulmonary Phospholipid Surfactants Using Field Induced Droplet Ionization Mass Spectrometry
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Interfacial Reactions of Ozone with Surfactant Protein B in a Model Lung Surfactant System
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Hugh I. Kim, Hyungjun Kim, Young Shik Shin, Luther W. Beegle, Seung Soon Jang, Evan L. Neidholdt, William A. Goddard, James R. Heath, Isik Kanik and J. L. BeauchampJournal of the American Chemical Society2010 132 (7), 2254-2263Oxidative stresses from irritants such as hydrogen peroxide and ozone (O3) can cause dysfunction of the pulmonary surfactant (PS) layer in the human lung, resulting in chronic diseases of the respiratory tract. For identification of structural changes of ...
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- Published In Issue October 05, 2006
- Received April 27, 2006
Revised July 2, 2006
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