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J Environ Monit


Title:"Spatial analysis and land use regression of VOCs and NO2 in Dallas, Texas during two seasons"
Author(s):Smith LA; Mukerjee S; Chung KC; Afghani J;
Address:"Alion Science and Technology, Inc., Durham, NC 27713, USA"
Journal Title:J Environ Monit
Year:2011
Volume:20110215
Issue:4
Page Number:999 - 1007
DOI: 10.1039/c0em00724b
ISSN/ISBN:1464-0333 (Electronic) 1464-0325 (Linking)
Abstract:"Passive air sampling for nitrogen dioxide (NO(2)) and select volatile organic compounds (VOCs) was conducted at 24 fire stations and a compliance monitoring site in Dallas, Texas, USA during summer 2006 and winter 2008. This ambient air monitoring network was established to assess intra-urban gradients of air pollutants to evaluate the impact of traffic and urban emissions on air quality. Ambient air monitoring and GIS data from spatially representative fire station sites were collected to assess spatial variability. Pairwise comparisons were conducted on the ambient data from the selected sites based on city section. These weeklong samples yielded NO(2) and benzene levels that were generally higher during the winter than the summer. With respect to the location within the city, the central section of Dallas was generally higher for NO(2) and benzene than north and south. Land use regression (LUR) results revealed spatial gradients in NO(2) and selected VOCs in the central and some northern areas. The process used to select spatially representative sites for air sampling and the results of analyses of coarse- and fine-scale spatial variability of air pollutants on a seasonal basis provide insights to guide future ambient air exposure studies in assessing intra-urban gradients and traffic impacts"
Keywords:Air Pollutants/*analysis Environmental Monitoring Nitrogen Dioxide/*analysis *Seasons Texas Volatile Organic Compounds/*analysis;
Notes:"MedlineSmith, Luther A Mukerjee, Shaibal Chung, Kuenja C Afghani, Jim eng Research Support, U.S. Gov't, Non-P.H.S. England 2011/02/18 J Environ Monit. 2011 Apr; 13(4):999-1007. doi: 10.1039/c0em00724b. Epub 2011 Feb 15"

 
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