Document Detail


PM source identification at Sunland Park, New Mexico, using a simple heuristic meteorological and chemical analysis.
MedLine Citation:
PMID:  15828677     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The causes for evening low-wind PM10 and PM2.5 peaks at Sunland Park, NM, were investigated by using wind sector analysis and by assessing relationships between PM loadings and meteorological parameters through canonical ordination analysis. Both PM10 and PM2.5 concentrations during the evening hours accounted for approximately 50% of their respective 24-hr averages, and the PM10 was mainly composed of coarse material (PM10-2.5 amounted to 77% of PM10). A wind sector analysis based on data from three surface meteorological monitoring stations in the region narrowed the potential source region for PM10 and PM2.5 to an area within a few kilometers south of Sunland Park. Canonical ordination analysis confirmed that the peak frequently occurred under stable conditions with weak southerly winds. Chemical analyses of PM showed that elemental and organic carbon (EC and OC, respectively) dominate PM2.5 and inorganic elements dominate PM10-2.5. The combined data for EC/OC, geologic elements, and various trace elements indicate that under low wind and stable conditions, traffic-related PM emissions (motor vehicle exhausts and re-suspended road dust) from the south of the site are the most likely sources for the evening PM10 and PM2.5 peaks.
Authors:
Wen-Whai Li; Nidia Cardenas; John Walton; David Trujillo; Hugo Morales; Richard Arimoto
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of the Air & Waste Management Association (1995)     Volume:  55     ISSN:  1096-2247     ISO Abbreviation:  J Air Waste Manag Assoc     Publication Date:  2005 Mar 
Date Detail:
Created Date:  2005-04-14     Completed Date:  2005-05-05     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  9503111     Medline TA:  J Air Waste Manag Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  352-64     Citation Subset:  IM    
Affiliation:
Department of Civil Engineering, The University of Texas at El Paso, El Paso, TX 79968-0516, USA.
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants / analysis*
Chemistry Techniques, Analytical
Environmental Monitoring / methods*
Meteorological Concepts
New Mexico
Particle Size
Chemical
Reg. No./Substance:
0/Air Pollutants

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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