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Measurements of nonmethane hydrocarbons in 28 United States cities
Open accessAbstract
Abstract Between 1999 and 2005 a sampling campaign was conducted to identify and quantify the major species of atmospheric nonmethane hydrocarbons (NMHCs) in United States cities. Whole air canister samples were collected in 28 cities and analyzed for methane, carbon monoxide (CO) and NMHCs. Ambient mixing ratios exhibited high inter- and intra-city variability, often having standard deviations in excess of 50% of the mean value. For this reason, ratios of individual NMHC to CO, a combustion tracer, were examined to facilitate comparison between cities. Ratios were taken from correlation plots between the species of interest and CO, and most NMHCs were found to have correlation coefficients (r2) greater than 0.6, particularly ethene, ethyne and benzene, highlighting the influence of vehicular emissions on NMHC mixing ratios. Notable exceptions were the short-chain alkanes, which generally had poor correlations with CO. Ratios of NMHC vs. CO were also used to identify those cities with unique NMHC sources.
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Cited by
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Contrasting trends of PM2.5 and surface-ozone concentrations in China from 2013 to 2017
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Metadata
- Authors
- Baker, A. K., Beyersdorf, A. J., Doezema, L. A., Katzenstein, A., Meinardi, S., Simpson, I. J., Blake, D. R., & Sherwood Rowland, F.
- Venue
- Atmospheric Environment
- Publisher
- Elsevier BV
- Published
- 2008-01
- Volume
- 42
- Issue
- 1
- Pages
- 170-182
- ISSN
- 1352-2310 (ISSN-L)
- OpenAlex
- W2019442711
- Cited by
- 233
- References
- 0
- FWCI
- 6.67
- Type
- journal article
- Language
- en
- Open access
- green
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- Baker, A. K., Beyersdorf, A. J., Doezema, L. A., Katzenstein, A., Meinardi, S., Simpson, I. J., Blake, D. R., & Sherwood Rowland, F. (2008). Measurements of nonmethane hydrocarbons in 28 United States cities. Atmospheric Environment. https://doi.org/10.1016/j.atmosenv.2007.09.007
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