Separation of emitted and photochemical formaldehyde in Mexico City using a statistical analysis and a new pair of gas-phase tracers
-
Published:2006-10-09
Issue:12
Volume:6
Page:4545-4557
-
ISSN:1680-7324
-
Container-title:Atmospheric Chemistry and Physics
-
language:en
-
Short-container-title:Atmos. Chem. Phys.
Author:
Garcia A. R.,Volkamer R.,Molina L. T.,Molina M. J.,Samuelson J.,Mellqvist J.,Galle B.,Herndon S. C.,Kolb C. E.
Abstract
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.
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference39 articles.
1. Altshuller, A. P.: Production of aldehydes as primary emissions and from secondary atmospheric reactions of alkenes during the night and early morning hours, Atmos. Environ. 27A, 21–32, 1993. 2. Anderson, L. G., Janning, J. A., Barrell, R., Miyagishima, J., Jones, R. H., and Wolfe, P.: Sources and sinks of formaldehyde and acetaldehyde: an analysis of Denver's ambient concentration data, Atmos. Environ., 30(12), 2114–2123, 1996. 3. Atkinson, R.: Atmospheric chemistry of VOCs and NOx, Atmos. Environ., 34, 2063–2101, 2000. 4. Box, G., Jenkings, G., and Reinsel, G.: Time Series Analysis: Forecasting and Control, Pretince-Hall, Englewood Cliffs, NJ, 1994. 5. Canagaratna, M. R., Jayne, J. T., Ghertner, A., Herndon, S. C., Shi, Q., Jimenez, J. L., Silva, P., Williams, P., Lanni, T., Drewnick, F., Demerjian, K. L., Kolb, C. E., and Worsnop, D. R.: Chase Studies of Particulate Emissions from in-use New York City Vehicles, Aerosol Sci. Technol, 38, 555–573, 2004.
Cited by
137 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|