Document Detail


Impact of wildfires on the air quality of Mexico City, 1992-1999.
MedLine Citation:
PMID:  11924549     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Wildfires in Mexico increased in 1998, compared to information for the last 6 years. The average number of wildfires in the Mexico City Metropolitan Area (MCMA) for this year (1998) were 58% (1916 events) more events than the 1992-1997 (average cases 1217 events). Mexico City affected area corresponds to 1.3% of the national affected area. The purpose of this paper is to evaluate the impact on the particles air quality due to the wildfire emissions at the MCMA and surrounding areas. Using the corresponding US EPA emission factors for wildfires, the tons of particulate matter, nitrogen oxides, carbon monoxide, and total hydrocarbons emitted by this source for the MCMA case were obtained. The calculated emissions during wildfires were correlated with the levels of particles present in the atmosphere. A comparison of the concentration levels of particles, both as PM10 as well as TSP, were made for the years 1992-1998, during wet and dry season, being March, April, and May the critical months due to the presence of wildfires. A good correlation is observed between particulate wildfire emissions and particulate air quality, being stronger for TSP. A clear impact on the particles air quality due to the increase of wildfires in 1998, is observed when this year is compared with 1997, presenting an increment of 200-300% for some monitoring stations.
Authors:
A H Bravo; E R Sosa; A P Sánchez; P M Jaimes; R M I Saavedra
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  117     ISSN:  0269-7491     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2002  
Date Detail:
Created Date:  2002-03-27     Completed Date:  2002-08-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  243-53     Citation Subset:  IM    
Affiliation:
Centro de Ciencias de la Atmósfera, Sección de Contaminación Ambiental, UNAM, Circuito exterior, Ciudad Universitaria, México DF, Mexico. hbravo@servidor.unam.mx
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants / analysis*
Cities
Environmental Monitoring
Fires*
Mexico
Particle Size
Smoke
Chemical
Reg. No./Substance:
0/Air Pollutants; 0/Smoke

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


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