Abstract
Ambient PM2.5 samples were taken at 24 h intervals at two sites (Centro and Miravalle) in the city of Guadalajara from January to June 2008. The Centro site is located in the downtown, while the Miravalle site is located in an industrial zone south of the downtown. For both sites the higher concentrations of PM2.5 were between January and May. High correlation coefficients between sulfate, nitrate and ammonium of 0.95, 0.92 and 0.91, respectively, showed low variations in the concentrations of these species in the city. It was estimated that sulfate, nitrate and ammonium represented almost 47% of the PM2.5 mass in June at the Centro site, but in general the contributions in the other months were less than 21%, while at Miravalle this percentage was between 7.7% and 27.6%.
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Acknowledgments
The authors would like to express their appreciation to Sandra Bravo and Rosalva Cuevas for their collaboration in the analysis of inorganic ions, to Dana Erickson and Winston Smith of the Peace Corps for the revision of this paper and to the Secretaría de Medio Ambiente para el Desarrollo del Estado de Jalisco (SEMADES), for allowing the installment of the equipment in their locations. Special thanks also to Consejo Nacional de Ciencia y Tecnología (CONACyT) for the financial support in this project.
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Hernández-Mena, L., Saldarriaga-Noreña, H., Carbajal-Romero, P. et al. Presence of the Most Abundant Ionic Species and Their Contribution to PM2.5 Mass, in the City of Guadalajara, Jalisco (Mexico). Bull Environ Contam Toxicol 85, 632–637 (2010). https://doi.org/10.1007/s00128-010-0140-8
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DOI: https://doi.org/10.1007/s00128-010-0140-8