Diel peroxy radicals in a semi-industrial coastal area: nighttime formation of free radicals

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • MD Andres-Hernandez
  • D Kartal
  • JN Crowley
  • V Sinha
  • E Regelin
  • M Martinez-Harder
  • V Nenakhov
  • J Williams
  • H Harder
  • H Bozem
  • W Song
  • J Thieser
  • MJ Tang
  • Z Hosaynali Beigi
  • JP Burrows
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000320380200022&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.5194/acp-13-5731-2013
eISSN
1680-7324
Externe Identifier
  • Clarivate Analytics Document Solution ID: 164AD
ISSN
1680-7316
Ausgabe der Veröffentlichung
11
Zeitschrift
ATMOSPHERIC CHEMISTRY AND PHYSICS
Paginierung
5731 - 5749
Datum der Veröffentlichung
2013
Status
Published
Titel
Diel peroxy radicals in a semi-industrial coastal area: nighttime formation of free radicals
Sub types
  • Article
Ausgabe der Zeitschrift
13

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:p>Abstract. Peroxy radicals were measured by a PeRCA (Peroxy Radical Chemical Amplifier) instrument in the boundary layer during the DOMINO (Diel Oxidant Mechanisms In relation to Nitrogen Oxides) campaign at a coastal, forested site influenced by urban-industrial emissions in southern Spain in late autumn. Total peroxy radicals (RO2* = HO2 + ΣRO2) generally showed a daylight maximum between 10 and 50 pptv at 13:00 UTC, with an average of 18 pptv over the 15 days of measurements. Emissions from the industrial area of Huelva often impacted the measurement site at night during the campaign. The processing of significant levels of anthropogenic organics leads to an intense nocturnal radical chemistry accompanied by formation of organic peroxy radicals at comparable levels to those of summer photochemical conditions with peak events up to 60–80 pptv. The RO2 production initiated by reactions of NO3 with organic trace gases was estimated to be significant, but not sufficient to account for the concentrations of RO2* observed in air masses carrying high pollutant loading. The nocturnal production of peroxy radicals in those periods seems therefore to be dominated by ozonolysis of volatile organic compounds, in particular alkenes of industrial petrochemical origin. RO2* diurnal variations were consistent with HO2 measurements available at the site. HO2/RO2* ratios generally varied between 0.3 and 0.6, though on some occasions this ratio was likely to have been affected by instrumental artifacts (overestimated HO2) associated with high RO2 loads. </jats:p>
Autoren
  • MD Andrés-Hernández
  • D Kartal
  • JN Crowley
  • V Sinha
  • E Regelin
  • M Martínez-Harder
  • V Nenakhov
  • J Williams
  • H Harder
  • H Bozem
  • W Song
  • J Thieser
  • MJ Tang
  • Z Hosaynali Beigi
  • JP Burrows
DOI
10.5194/acp-13-5731-2013
eISSN
1680-7324
Ausgabe der Veröffentlichung
11
Zeitschrift
Atmospheric Chemistry and Physics
Sprache
en
Online publication date
2013
Paginierung
5731 - 5749
Status
Published online
Herausgeber
Copernicus GmbH
Herausgeber URL
http://dx.doi.org/10.5194/acp-13-5731-2013
Datum der Datenerfassung
2021
Titel
Diel peroxy radicals in a semi-industrial coastal area: nighttime formation of free radicals
Ausgabe der Zeitschrift
13

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