Contribution of Nitrated Phenols to Wood Burning Brown Carbon Light Absorption in Detling, United Kingdom during Winter Time

被引：291

作者：

Mohr, Claudia ^{[1
]}

Lopez-Hilfiker, Felipe D. ^{[1
]}

Zotter, Peter ^{[2
]}

Prevot, Andre S. H. ^{[2
]}

Xu, Lu ^{[3
]}

Ng, Nga L. ^{[3
]}

Herndon, Scott C. ^{[4
]}

Williams, Leah R. ^{[4
]}

Franklin, Jonathan P. ^{[4
]}

Zahniser, Mark S. ^{[4
]}

Worsnop, Douglas R. ^{[4
,5
]}

Knighton, W. Berk ^{[6
]}

Aiken, Allison C. ^{[7
]}

Gorkowski, Kyle J. ^{[7
,8
]}

Dubey, Manvendra K. ^{[7
]}

Allan, James D. ^{[9
,10
]}

Thornton, Joel A. ^{[1
]}

机构：

[1] Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA

[2] Paul Scherrer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland

[3] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA

[4] Aerodyne Res Inc, Billerica, MA 01821 USA

[5] Univ Helsinki, Dept Phys, Helsinki 00014, Finland

[6] Montana State Univ, Dept Chem & Biochem, Bozeman, MT 59717 USA

[7] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA

[8] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[9] Univ Manchester, Natl Ctr Atmospher Sci, Manchester M13 9PL, Lancs, England

[10] Univ Manchester, Sch Earth Atmopspher & Environm Sci, Manchester M13 9PL, Lancs, England

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2013年 / 47卷 / 12期

关键词：

POSITIVE MATRIX FACTORIZATION; MASS-SPECTROMETER; BLACK CARBON; MEXICO-CITY; ATMOSPHERIC CHEMISTRY; PARTICULATE MATTER; ORGANIC-COMPOUNDS; AEROSOLS; EMISSION; PHASE;

D O I：

10.1021/es400683v

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We show for she 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.

引用

页码：6316 / 6324

页数：9

共 61 条

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