Particulate organic nitrates observed in an oil and natural gas production region during wintertime
Organic nitrates in both gas and condensed (aerosol) phases were measured during the Uintah Basin Winter Ozone Study from January to February in 2012. A high degree of correlation between total aerosol volume at diameters less than 500 nm and the particulate organic nitrate concentration indicates t...
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doaj-a5982a85d6bf4c3d93a0aec634b0f2302020-11-24T22:48:17ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242015-08-0115169313932510.5194/acp-15-9313-2015Particulate organic nitrates observed in an oil and natural gas production region during wintertimeL. Lee0P. J. Wooldridge1J. deGouw2S. S. Brown3T. S. Bates4P. K. Quinn5R. C. Cohen6Department of Chemistry, University of California, Berkeley, CA, USADepartment of Chemistry, University of California, Berkeley, CA, USAChemical Science Division, Earth System Research Laboratory, National Oceanic & Atmospheric Administration, Boulder, CO, USAChemical Science Division, Earth System Research Laboratory, National Oceanic & Atmospheric Administration, Boulder, CO, USAJoint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, WA, USAPacific Marine Environment Laboratory, National Oceanic & Atmospheric Administration, Seattle, WA, USADepartment of Chemistry, University of California, Berkeley, CA, USAOrganic nitrates in both gas and condensed (aerosol) phases were measured during the Uintah Basin Winter Ozone Study from January to February in 2012. A high degree of correlation between total aerosol volume at diameters less than 500 nm and the particulate organic nitrate concentration indicates that organic nitrates are a consistent, if not dominant, fraction of fine aerosol mass. In contrast, a similar correlation with sub-2.5 μm aerosol volume is weaker. The C : N atomic ratio inferred from field measurements of PM<sub>2.5</sub> and particulate organic nitrate is 34 : 1. Calculations constrained by the observations indicate that both condensation of gas-phase nitrates and heterogeneous reactions of NO<sub>3</sub> / N<sub>2</sub>O<sub>5</sub> are responsible for introducing organic nitrate functionality into the aerosol and that the source molecules are alkanes. Extrapolating the results to urban aerosol suggests organic nitrate production from alkanes may be a major secondary organic aerosol source.http://www.atmos-chem-phys.net/15/9313/2015/acp-15-9313-2015.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
L. Lee P. J. Wooldridge J. deGouw S. S. Brown T. S. Bates P. K. Quinn R. C. Cohen |
spellingShingle |
L. Lee P. J. Wooldridge J. deGouw S. S. Brown T. S. Bates P. K. Quinn R. C. Cohen Particulate organic nitrates observed in an oil and natural gas production region during wintertime Atmospheric Chemistry and Physics |
author_facet |
L. Lee P. J. Wooldridge J. deGouw S. S. Brown T. S. Bates P. K. Quinn R. C. Cohen |
author_sort |
L. Lee |
title |
Particulate organic nitrates observed in an oil and natural gas production region during wintertime |
title_short |
Particulate organic nitrates observed in an oil and natural gas production region during wintertime |
title_full |
Particulate organic nitrates observed in an oil and natural gas production region during wintertime |
title_fullStr |
Particulate organic nitrates observed in an oil and natural gas production region during wintertime |
title_full_unstemmed |
Particulate organic nitrates observed in an oil and natural gas production region during wintertime |
title_sort |
particulate organic nitrates observed in an oil and natural gas production region during wintertime |
publisher |
Copernicus Publications |
series |
Atmospheric Chemistry and Physics |
issn |
1680-7316 1680-7324 |
publishDate |
2015-08-01 |
description |
Organic nitrates in both gas and condensed (aerosol) phases were measured
during the Uintah Basin Winter Ozone Study from January to February in 2012.
A high degree of correlation between total aerosol volume at diameters less
than 500 nm and the particulate organic nitrate concentration indicates that
organic nitrates are a consistent, if not dominant, fraction of fine aerosol
mass. In contrast, a similar correlation with sub-2.5 μm aerosol volume
is weaker. The C : N atomic ratio inferred from field measurements of
PM<sub>2.5</sub> and particulate organic nitrate is 34 : 1. Calculations constrained
by the observations indicate that both condensation of gas-phase nitrates
and heterogeneous reactions of NO<sub>3</sub> / N<sub>2</sub>O<sub>5</sub> are responsible for
introducing organic nitrate functionality into the aerosol and that the
source molecules are alkanes. Extrapolating the results to urban aerosol
suggests organic nitrate production from alkanes may be a major secondary
organic aerosol source. |
url |
http://www.atmos-chem-phys.net/15/9313/2015/acp-15-9313-2015.pdf |
work_keys_str_mv |
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