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Fatty Acid Surfactant Photochemistry Results in New Particle Formation
Organic interfaces that exist at the sea surface microlayer or as surfactant coatings on cloud droplets are highly concentrated and chemically distinct from the underlying bulk or overlying gas phase. Therefore, they may be potentially unique locations for chemical or photochemical reactions. Recent...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5627235/ https://www.ncbi.nlm.nih.gov/pubmed/28978998 http://dx.doi.org/10.1038/s41598-017-12601-2 |
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author | Alpert, Peter A. Ciuraru, Raluca Rossignol, Stéphanie Passananti, Monica Tinel, Liselotte Perrier, Sebastien Dupart, Yoan Steimer, Sarah S. Ammann, Markus Donaldson, D. James George, Christian |
author_facet | Alpert, Peter A. Ciuraru, Raluca Rossignol, Stéphanie Passananti, Monica Tinel, Liselotte Perrier, Sebastien Dupart, Yoan Steimer, Sarah S. Ammann, Markus Donaldson, D. James George, Christian |
author_sort | Alpert, Peter A. |
collection | PubMed |
description | Organic interfaces that exist at the sea surface microlayer or as surfactant coatings on cloud droplets are highly concentrated and chemically distinct from the underlying bulk or overlying gas phase. Therefore, they may be potentially unique locations for chemical or photochemical reactions. Recently, photochemical production of volatile organic compounds (VOCs) was reported at a nonanoic acid interface however, subsequent secondary organic aerosol (SOA) particle production was incapable of being observed. We investigated SOA particle formation due to photochemical reactions occurring at an air-water interface in presence of model saturated long chain fatty acid and alcohol surfactants, nonanoic acid and nonanol, respectively. Ozonolysis of the gas phase photochemical products in the dark or under continued UV irradiation both resulted in nucleation and growth of SOA particles. Irradiation of nonanol did not yield detectable VOC or SOA production. Organic carbon functionalities of the SOA were probed using X-ray microspectroscopy and compared with other laboratory generated and field collected particles. Carbon-carbon double bonds were identified in the condensed phase which survived ozonolysis during new particle formation and growth. The implications of photochemical processes occurring at organic coated surfaces are discussed in the context of marine SOA particle atmospheric fluxes. |
format | Online Article Text |
id | pubmed-5627235 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-56272352017-10-12 Fatty Acid Surfactant Photochemistry Results in New Particle Formation Alpert, Peter A. Ciuraru, Raluca Rossignol, Stéphanie Passananti, Monica Tinel, Liselotte Perrier, Sebastien Dupart, Yoan Steimer, Sarah S. Ammann, Markus Donaldson, D. James George, Christian Sci Rep Article Organic interfaces that exist at the sea surface microlayer or as surfactant coatings on cloud droplets are highly concentrated and chemically distinct from the underlying bulk or overlying gas phase. Therefore, they may be potentially unique locations for chemical or photochemical reactions. Recently, photochemical production of volatile organic compounds (VOCs) was reported at a nonanoic acid interface however, subsequent secondary organic aerosol (SOA) particle production was incapable of being observed. We investigated SOA particle formation due to photochemical reactions occurring at an air-water interface in presence of model saturated long chain fatty acid and alcohol surfactants, nonanoic acid and nonanol, respectively. Ozonolysis of the gas phase photochemical products in the dark or under continued UV irradiation both resulted in nucleation and growth of SOA particles. Irradiation of nonanol did not yield detectable VOC or SOA production. Organic carbon functionalities of the SOA were probed using X-ray microspectroscopy and compared with other laboratory generated and field collected particles. Carbon-carbon double bonds were identified in the condensed phase which survived ozonolysis during new particle formation and growth. The implications of photochemical processes occurring at organic coated surfaces are discussed in the context of marine SOA particle atmospheric fluxes. Nature Publishing Group UK 2017-10-04 /pmc/articles/PMC5627235/ /pubmed/28978998 http://dx.doi.org/10.1038/s41598-017-12601-2 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Alpert, Peter A. Ciuraru, Raluca Rossignol, Stéphanie Passananti, Monica Tinel, Liselotte Perrier, Sebastien Dupart, Yoan Steimer, Sarah S. Ammann, Markus Donaldson, D. James George, Christian Fatty Acid Surfactant Photochemistry Results in New Particle Formation |
title | Fatty Acid Surfactant Photochemistry Results in New Particle Formation |
title_full | Fatty Acid Surfactant Photochemistry Results in New Particle Formation |
title_fullStr | Fatty Acid Surfactant Photochemistry Results in New Particle Formation |
title_full_unstemmed | Fatty Acid Surfactant Photochemistry Results in New Particle Formation |
title_short | Fatty Acid Surfactant Photochemistry Results in New Particle Formation |
title_sort | fatty acid surfactant photochemistry results in new particle formation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5627235/ https://www.ncbi.nlm.nih.gov/pubmed/28978998 http://dx.doi.org/10.1038/s41598-017-12601-2 |
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