We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Separation of emitted and photochemical formaldehyde in Mexico City using a statistical analysis and a new pair of gas-phase tracers.
- Authors
Garcia, A. R.; Volkamer, R.; Molina, L. T.; Molina, M. J.; Samuelson, J.; Mellqvist, J.; Galle, B.; Herndon, S. C.; Kolb, C. E.
- Abstract
Photochemical pollution control strategies require an understanding of photochemical oxidation precursors, making it important to distinguish between primary and secondary sources of HCHO. Estimates for the relative strengths of primary and secondary sources of formaldehyde (HCHO) were obtained using a statistical regression analysis with time series data of carbon monoxide (CO) and glyoxal (CHOCHO) measured in the Mexico City Metropolitan Area (MCMA) during the spring of 2003. Differences between Easter week and more typical weeks are evaluated. The use of CO-CHOCHO as HCHO tracers is more suitable for differentiating primary and secondary sources than CO-O3. The application of the CO-O3 tracer pair to mobile laboratory data suggests a potential in-city source of background HCHO. A significant amount of HCHO observed in the MCMA is associated with primary emissions.
- Subjects
FORMALDEHYDE; PHOTOCHEMICAL smog; POLLUTION; CARBON monoxide; POISONOUS gases
- Publication
Atmospheric Chemistry & Physics, 2006, Vol 6, Issue 12/2, p4545
- ISSN
1680-7316
- Publication type
Article
- DOI
10.5194/acp-6-4545-2006