Journal Article

FZJ-2017-05009

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Atmospheric chemistry, sources and sinks of carbon suboxide, C3O2

Keßel, S. ; Cabrera-Perez, D. ; Horowitz, A. ; Veres, P. R. ; Sander, R. ; Taraborrelli, D.FZJ* ; Tucceri, M. ; Crowley, J. N. ; Pozzer, A. ; Stönner, C. ; Vereecken, L.FZJ* ; Lelieveld, J. ; Williams, J. (Corresponding author)

2017
EGU Katlenburg-Lindau

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Please use a persistent id in citations: http://hdl.handle.net/2128/14938  doi:10.5194/acp-17-8789-2017

Abstract: Carbon suboxide, O  =  C  =  C  =  C  =  O, has been detected in ambient air samples and has the potential to be a noxious pollutant and oxidant precursor; however, its lifetime and fate in the atmosphere are largely unknown. In this work, we collect an extensive set of studies on the atmospheric chemistry of C3O2. Rate coefficients for the reactions of C3O2 with OH radicals and ozone were determined as kOH =  (2.6 ± 0.5)  ×  10−12 cm3 molecule−1 s−1 at 295 K (independent of pressure between  ∼  25 and 1000 mbar) and kO3  <  1.5  ×  10−21 cm3 molecule−1 s−1 at 295 K. A theoretical study on the mechanisms of these reactions indicates that the sole products are CO and CO2, as observed experimentally. The UV absorption spectrum and the interaction of C3O2 with water (Henry's law solubility and hydrolysis rate constant) were also investigated, enabling its photodissociation lifetime and hydrolysis rates, respectively, to be assessed.

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Contributing Institute(s):

1. Troposphäre (IEK-8)

Research Program(s):

1. 243 - Tropospheric trace substances and their transformation processes (POF3-243) (POF3-243)

Appears in the scientific report 2017

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Database coverage:
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