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Sci Total Environ

Title:		Atmospheric volatile organic compound measurements during the 1996 Paso del Norte Ozone Study
Author(s):		Seila RL; Main HH; Arriaga JL; Martinez G; Ramadan AB;
Address:		"US Environmental Protection Agency, National Exposure Research Laboratory, Research Triangle Park, NC 27711, USA. Seila.Robert@epa.gov"
Journal Title:		Sci Total Environ
Year:		2001
Volume:		276
Issue:		1-Mar
Page Number:		153 - 169
DOI:		10.1016/s0048-9697(01)00777-x
ISSN/ISBN:		0048-9697 (Print) 0048-9697 (Linking)
Abstract:		"Ambient air VOC samples were collected at surface air quality monitoring sites, near sources of interest, and aloft on the US (El Paso) and Mexican (Ciudad Juarez) side of the border during a six-week period of the 1996 Paso del Norte Ozone Study. Samples were collected at five sites, three on the US side and two on the Mexican side, during nine intensive operation days when high ozone levels were forecast for the area. Six other sites were sampled to characterize up-wind, down-wind and other emission sources. Samples for determining source profiles were collected for rush hour traffic, propane-powered bus exhaust, automobile paint shop emissions, propane fuels, and industrial manufacturing in Cd. Juarez and a refinery in El Paso. Most samples were collected in electro-polished stainless steel canisters for determination of C2 to C(10+) hydrocarbons by GC-FID. Carbonyl samples were collected on DNPH impregnated cartridges at three surface sites during aircraft flights and analyzed by HPLC. This paper presents the spatial and temporal characteristics of VOC species concentrations and compositions to examine the differences and similarities of the various locations and time periods. Overall surface, total non-methane hydrocarbon values ranged from 0.1 to 3.4 ppmC with the highest concentrations being recorded in the morning and evening at five vehicle-dominated sites, three in Cd. Juarez and two in El Paso. Toluene in El Paso samples and propane, which is used as a cooking and transportation fuel in Cd. Juarez, were the most abundant hydrocarbons. The most abundant carbonyls were acetaldehyde, acetone and formaldehyde"
Keywords:		Air Movements Air Pollution/*analysis Cooking *Environmental Monitoring Humans Hydrocarbons/*analysis Industry Mexico Organic Chemicals/analysis Power Plants United States Vehicle Emissions Volatilization;
Notes:		"MedlineSeila, R L Main, H H Arriaga, J L Martinez, G Ramadan, A B eng Research Support, U.S. Gov't, Non-P.H.S. Netherlands 2001/08/29 Sci Total Environ. 2001 Aug 10; 276(1-3):153-69. doi: 10.1016/s0048-9697(01)00777-x"