%0 Journal Article
%A Mohr, Claudia
%A Lopez-Hilfiker, Felipe
D.
%A Zotter, Peter
%A S. H. Prévôt, André
%A Xu, Lu
%A Ng, Nga L.
%A Herndon, Scott C.
%A Williams, Leah R.
%A Franklin, Jonathan P.
%A Zahniser, Mark S.
%A Worsnop, Douglas R.
%A Knighton, W. Berk
%A Aiken, Allison
C.
%A Gorkowski, Kyle J.
%A Dubey, Manvendra K.
%A Allan, James
D.
%A Thornton, Joel A.
%D 2015
%T Contribution of Nitrated Phenols to Wood Burning Brown
Carbon Light Absorption in Detling, United Kingdom during Winter Time
%U https://acs.figshare.com/articles/journal_contribution/Contribution_of_Nitrated_Phenols_to_Wood_Burning_Brown_Carbon_Light_Absorption_in_Detling_United_Kingdom_during_Winter_Time/2024064
%R 10.1021/es400683v.s001
%2 https://ndownloader.figshare.com/files/3595359
%K MOVI
%K nitrophenol C 6H methylnitrophenol C 7H nitrocatechol C 6H methylnitrocatechol C 7H
%K chemical ionization mass spectrometer
%K carbon UV light absorption
%K Detling
%K contribution
%K UV light absorption
%K CO
%K Winter TimeWe show
%K Brown Carbon Light Absorption
%K dinitrophenol C 6H
%K air quality
%K ng
%K Total NP concentrations
%X We
show for the first time quantitative online measurements of
five nitrated phenol (NP) compounds in ambient air (nitrophenol C6H5NO3, methylnitrophenol C7H7NO3, nitrocatechol C6H5NO4, methylnitrocatechol C7H7NO4, and dinitrophenol C6H4N2O5) measured with a micro-orifice volatilization impactor
(MOVI) high-resolution chemical ionization mass spectrometer in Detling,
United Kingdom during January–February, 2012. NPs absorb radiation
in the near-ultraviolet (UV) range of the electromagnetic spectrum
and thus are potential components of poorly characterized light-absorbing
organic matter (“brown carbon”) which can affect the
climate and air quality. Total NP concentrations varied between less
than 1 and 98 ng m–3, with a mean value of 20 ng
m–3. We conclude that NPs measured in Detling have
a significant contribution from biomass burning with an estimated
emission factor of 0.2 ng (ppb CO)−1. Particle light
absorption measurements by a seven-wavelength aethalometer in the
near-UV (370 nm) and literature values of molecular absorption cross
sections are used to estimate the contribution of NP to wood burning
brown carbon UV light absorption. We show that these five NPs are
potentially important contributors to absorption at 370 nm measured
by an aethalometer and account for 4 ± 2% of UV light absorption
by brown carbon. They can thus affect atmospheric radiative transfer
and photochemistry and with that climate and air quality.
%I ACS Publications