Kinetic of the gas-phase reactions of OH radicals and Cl atoms with Diethyl Ethylphosphonate and Triethyl Phosphate

Handle URI:
http://hdl.handle.net/10754/583050
Title:
Kinetic of the gas-phase reactions of OH radicals and Cl atoms with Diethyl Ethylphosphonate and Triethyl Phosphate
Authors:
Laversin, H.; El Masri, A.; Al Rashidi, M.; Roth, E.; Chakir, A.
Abstract:
In this paper, the relative-rate technique has been used to obtain rate coefficients for the reaction of two organophosphorus compounds: Triethyl phosphate (TEP) and Diethyl ethylphosphonate (DEEP) with OH radicals and Cl atoms at atmospheric pressure and at different temperatures. The calculated rate constants were fitted to the Arrhenius expression over the temperature range 298 – 352 K. The following expressions (in cm3molecule-1s-1) were obtained for the reactions of OH and CL with DEEP and TEP: kOH+DEEP= (7.84±0.65)x10-14exp((1866±824)/T), kOH+TEP = (6.54±0.42)x10-14exp((1897±626)/T), kCl+DEEP = (5.27± 0.80)x10−11exp(765±140/T) and kCl+TEP = (5.23± 0.80)x10−11exp(736± 110/T). These results show that the reaction of the studied compounds with Cl atoms proceeds more rapidly than that with OH radicals. The related tropospheric lifetimes suggest that once emitted into the atmosphere, TEP and DEEP can be removed within a few hours in areas close to their emission sources. TEP and DEEP are principally removed by OH radicals. However, in coastal areas where the Cl atoms’ concentration is higher, TEP and DEEP removal by reaction with Cl atoms could be a competitive process.
KAUST Department:
Clean Combustion Research Center
Citation:
Kinetic of the gas-phase reactions of OH radicals and Cl atoms with Diethyl Ethylphosphonate and Triethyl Phosphate 2015 Atmospheric Environment
Publisher:
Elsevier BV
Journal:
Atmospheric Environment
Issue Date:
30-Nov-2015
DOI:
10.1016/j.atmosenv.2015.11.057
Type:
Article
ISSN:
13522310
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S1352231015305641
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorLaversin, H.en
dc.contributor.authorEl Masri, A.en
dc.contributor.authorAl Rashidi, M.en
dc.contributor.authorRoth, E.en
dc.contributor.authorChakir, A.en
dc.date.accessioned2015-12-01T13:37:13Zen
dc.date.available2015-12-01T13:37:13Zen
dc.date.issued2015-11-30en
dc.identifier.citationKinetic of the gas-phase reactions of OH radicals and Cl atoms with Diethyl Ethylphosphonate and Triethyl Phosphate 2015 Atmospheric Environmenten
dc.identifier.issn13522310en
dc.identifier.doi10.1016/j.atmosenv.2015.11.057en
dc.identifier.urihttp://hdl.handle.net/10754/583050en
dc.description.abstractIn this paper, the relative-rate technique has been used to obtain rate coefficients for the reaction of two organophosphorus compounds: Triethyl phosphate (TEP) and Diethyl ethylphosphonate (DEEP) with OH radicals and Cl atoms at atmospheric pressure and at different temperatures. The calculated rate constants were fitted to the Arrhenius expression over the temperature range 298 – 352 K. The following expressions (in cm3molecule-1s-1) were obtained for the reactions of OH and CL with DEEP and TEP: kOH+DEEP= (7.84±0.65)x10-14exp((1866±824)/T), kOH+TEP = (6.54±0.42)x10-14exp((1897±626)/T), kCl+DEEP = (5.27± 0.80)x10−11exp(765±140/T) and kCl+TEP = (5.23± 0.80)x10−11exp(736± 110/T). These results show that the reaction of the studied compounds with Cl atoms proceeds more rapidly than that with OH radicals. The related tropospheric lifetimes suggest that once emitted into the atmosphere, TEP and DEEP can be removed within a few hours in areas close to their emission sources. TEP and DEEP are principally removed by OH radicals. However, in coastal areas where the Cl atoms’ concentration is higher, TEP and DEEP removal by reaction with Cl atoms could be a competitive process.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S1352231015305641en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Atmospheric Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Atmospheric Environment, 30 November 2015. DOI:10.1016/j.atmosenv.2015.11.057en
dc.subjectOrganophosphorusen
dc.subjectHydroxyl radicalen
dc.subjectChlorine atomsen
dc.subjectRate coefficienten
dc.subjectKineticsen
dc.subjectAtmospheric Chemistryen
dc.titleKinetic of the gas-phase reactions of OH radicals and Cl atoms with Diethyl Ethylphosphonate and Triethyl Phosphateen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalAtmospheric Environmenten
dc.eprint.versionPost-printen
dc.contributor.institutionGroupe de Spectrométrie Moléculaire et Atmosphérique (GSMA) UMR-CNRS 7331, Université de Reims Champagne Ardennes, 51687 Reims, Franceen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorAl Rashidi, M.en
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