Year: 2024
Type: article
Abstract: Mexico City emits several thousands of tons of particle matter from transportation and other economic sectors. We collected PM2.5 samples from January to March 2015. The chemical analyses showed that PM2.5 is made up of 39% organic carbon, 12% elemental carbon, 23% metals (Al, Si, S, P, and K), and 5% heavy metals (Pb, Cr, Mn, Zn, and Hg). Ca and Fe were also present in trace concentrations, probably due to the resuspension of soils. Nitrate, sulfate, and ammonium suggest that the southwest of Mexico City, specifically the sampling site, receives more oxidated pollutants from vehicle emissions than other emissions. The chemical analyses show no significant changes in the composition or concentration of particle matter compared to previous studies.
Source: Geofísica Internacional
Authors: Telma Castro Romero, Oscar Peralta, Cristina Prieto, Naxieli Santiago, Harry Alvarez-Ospina, Rocío García Martínez, Isabel Saavedra Rosado, María de la Luz Espinosa Fuentes, Enrique Hernández, Javier Miranda, Violeta Gómez, Corina Solís, Dara Salcedo, Ricardo Torres-Jardón, Amparo Martínez-Arroyo, Abraham Ortínez Álvarez, Gerardo Ruíz-Suárez, Elba Ortiz
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4402803442