title: Determination of black carbon in fine particles using a semi-continuous method at two sites in the city of Guadalajara, Mexico, during 2007.
abstract: The black carbon is a pollutant species primarily emitted from the combustion of fossil fuels (diesel). Their concentrations associated to PM2.5 were monitoring at two sites in the city of Guadalajara. From January to May (except April), downtown site shown 2.7, 2.6, 4.0 and 2.3 times higher monthly concentrations. The dry season two showed higher concentrations respect to at least one of the others seasons (p < 0.0001) at each site, probably due to atmospheric conditions less favorable for the dispersal of pollutants. During the 24 h period were observed at the year two peaks of concentrations: the highest morning peak and lower night peak, both probably related to anthropogenic activity.
authors.affiliation: Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A. C., Colinas de la Normal, Guadalajara, Mexico. lhernandez@ciatej.net.mx.
authors.forename: Leonel
authors.initials: L
authors.lastname: Hernández-Mena
authors.forename: Hugo
authors.initials: H
authors.lastname: Saldarriaga-Noreña
authors.forename: Mario A
authors.initials: MA
authors.lastname: Murillo-Tovar
authors.forename: Omar
authors.initials: O
authors.lastname: Amador-Muñoz
authors.forename: Alberto
authors.initials: A
authors.lastname: López-López
authors.forename: Stefan M
authors.initials: SM
authors.lastname: Waliszewski
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002947:Cities; D004784:Environmental Monitoring / Q000379:methods*; D008800:Mexico; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis*; D012621:Seasons; D053260:Soot / Q000032:analysis*; D013997:Time Factors; D001335:Vehicle Emissions / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter; D053260:Soot; D001335:Vehicle Emissions