PM2.5-bound trace metals in an urban area of Northern Mexico during the COVID-19 pandemic: characterization, sources, and health risk S Martínez Morales, JG Cerón Bretón, N Carbajal, RM Cerón Bretón, ... Air Quality, Atmosphere & Health 16 (9), 1789-1808, 2023 | 5 | 2023 |