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Aldehyde and monocyclic aromatic hydrocarbon mixing ratios at an urban site in Las Vegas, Nevada.
| Content Provider | Scilit |
|---|---|
| Author | Jing, Linhong Steinberg, Spencer M. Johnson, Brian J. |
| Copyright Year | 2001 |
| Description | Journal: Journal of the Air & Waste Management Association Linhong Jing completed a master's degree in chemistry at UNLV and is currently enrolled in the Ph.D. program at Purdue University. Her address is Department of Chemistry, Purdue University, West Lafayette, IN 47907. Dr. Spencer Steinberg is an associate professor of chemistry at UNLV. His address is UNLV Department of Chemistry, P.O. Box 454003, Las Vegas, NV 89154-4003. Dr. Brian Johnson is an associate professor of chemistry at UNLV. His address is UNLV Department of Chemistry, P.O. Box 454003, Las Vegas, NV 89154-4003. Oxidation of benzene, toluene, ethylbenzene, and xylenes (BTEX) in air, of significance due to, for example, the potential for $O_{3}$ formation, is believed to be initiated by OH attack on the ring (addition) or on the alkyl side chain (H abstraction). A series of ring-breaking reactions follows, with major products predicted to be a-dicarbonyls, simple aldehydes, and organic acids. To test this prediction, ambient air mixing ratios of aldehydes (formaldehyde, ac-etaldehyde, benzaldehyde, glyoxal, and pyruvaldehyde), along with some supporting BTEX data, were measured at an urban site in Las Vegas, NV. Samples were collected on sorbents and determined by chromatographic methods; mixing ratios were compared to ambient levels of CO, $O_{3}$, and $NO_{x}$. A meteorological analysis (temperature, wind speed, and wind direction) was also included. Statistically significant relationships were noted among the BTEX hydrocarbons (HCs) and among the photochemi-cally derived species (e.g., $O_{3}$, $NO_{2}$, and some of the aldehydes), although there was seasonal variation. The observations are consistent with a common primary source (i.e., vehicular exhaust or fuel evaporation) for the BTEX compounds and a common secondary source (e.g., OH attack) for glyoxal and pyruvaldehyde. |
| Related Links | http://www.tandfonline.com/doi/pdf/10.1080/10473289.2001.10464352?needAccess=true |
| Ending Page | 1366 |
| Page Count | 8 |
| Starting Page | 1359 |
| ISSN | 10962247 |
| e-ISSN | 21622906 |
| DOI | 10.1080/10473289.2001.10464352 |
| Journal | Journal of the Air & Waste Management Association |
| Issue Number | 9 |
| Volume Number | 51 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2001-09-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of the Air & Waste Management Association Environmental Sciences Hydrocarbons Mixing Ratios Pyruvaldehyde |
| Content Type | Text |
| Subject | Atmospheric Science Pollution Waste Management and Disposal Management, Monitoring, Policy and Law |
