Publications by authors named "Juan Manuel Alfaro Barbosa"
This research investigates the concentrations, sources, and health risks of polycyclic aromatic hydrocarbons (PAHs) and nitrated PAHs (NPAHs) in particulate matter with an aerodynamic diameter of 10 μm or less (PM[Formula: see text]) from critical urban centers in northern Mexico: Metropolitan Monterrey Area (MMA), Chihuahua (CHI), and Ciudad Juárez (CDJ). Advanced gas chromatography-mass spectrometry (GC-MS and GC-NCI-MS) revealed significant PAHs concentrations, with levels in MMA reaching 108.89 ± 99.
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- * Elevated levels of Pb, Cd, and Cr were found, indicating significant environmental contamination, with sources identified as industrial activities, traffic, and vehicular emissions.
- * The mobility of Pb was found to be higher than that of Cd, suggesting that Pb poses a greater environmental risk, as it can be more easily released into the ecosystem.