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DOAS measurement of glyoxal as an indicator for fast VOC chemistry in urban air
Abstract
We present the first direct measurements of glyoxal (CHOCHO) in the atmosphere, and demonstrate that glyoxal measurements are possible by differential optical absorption spectroscopy (DOAS). Glyoxal was routinely detected during the daytime in Mexico City, where mixing ratios ranged from <0.15 ppbv (detection limit) to 1.82 ppbv. These time‐resolved measurements resolve the rapid diurnal variation of glyoxal, and indicate the onset of volatile organic compound (VOC) oxidation about 1hr after sunrise. The atmospheric lifetime of glyoxal is determined to be 1.3 hr for overhead sun conditions. Then elevated glyoxal levels indicate a persistently active VOC chemistry during most of the day. Glyoxal forms from the oxidation of numerous VOCs, which foster the formation of ‘photochemical smog’ including ozone and aerosol particles; atmospheric levels are essentially unaffected by direct vehicle emissions in Mexico City. Satellite measurements of glyoxal seem feasible, making possible the better identification of photochemical hot spots in the Earth's atmosphere.
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Cites
Aerosols, Climate, and the Hydrological Cycle
Ramanathan, V., Crutzen, P. J., Kiehl, J. T., & Rosenfeld, D. (2001) · Science · doi:10.1126/science.1064034 · Cited by 3,831
Cited by
Formation of Urban Fine Particulate Matter
Zhang, R., Wang, G., Guo, S., Zamora, M. L., Ying, Q., Lin, Y., Wang, W., Hu, M., & Wang, Y. (2015) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00067 · Cited by 1,426
Fu, T., Jacob, D. J., Wittrock, F., Burrows, J. P., Vrekoussis, M., & Henze, D. K. (2008) · Journal of Geophysical Research: Atmospheres · doi:10.1029/2007jd009505 · Cited by 746
The Molecular Identification of Organic Compounds in the Atmosphere: State of the Art and Challenges
Nozière, B., Kalberer, M., Claeys, M., Allan, J., D’Anna, B., Decesari, S., Finessi, E., Glasius, M., Grgić, I., Hamilton, J. F., et al. (2015) · Chemical Reviews · doi:10.1021/cr5003485 · Cited by 656
Aqueous chemistry and its role in secondary organic aerosol (SOA) formation
Lim, Y. B., Tan, Y., Perri, M. J., Seitzinger, S. P., & Turpin, B. J. (2010) · Atmospheric Chemistry and Physics · doi:10.5194/acp-10-10521-2010 · Cited by 585
Aiken, A. C., Salcedo, D., Cubison, M. J., Huffman, J. A., DeCarlo, P. F., Ulbrich, I. M., Docherty, K. S., Sueper, D., Kimmel, J. R., Worsnop, D. R., et al. (2009) · Atmospheric Chemistry and Physics · doi:10.5194/acp-9-6633-2009 · Cited by 549
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Metadata
- Authors
- Volkamer, R., Molina, L. T., Molina, M. J., Shirley, T., & Brune, W. H.
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2005-04
- Volume
- 32
- Issue
- 8
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W2089663223
- Cited by
- 231
- References
- 1
- FWCI
- 9.59
- Type
- journal article
- Language
- en
- Open access
- closed
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- Volkamer, R., Molina, L. T., Molina, M. J., Shirley, T., & Brune, W. H. (2005). DOAS measurement of glyoxal as an indicator for fast VOC chemistry in urban air. Geophysical Research Letters. https://doi.org/10.1029/2005gl022616
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