Air quality Ensure healthy lives and promote well-being for all at all ages Make cities and human settlements inclusive, safe, resilient and sustainable Particulate matter Source apportionment PM10 Aerosols Air pollution Black carbon COVID-19 PM2.5 Ultrafine particles Ensure availability and sustainable management of water and sanitation for all Ozone Take urgent action to combat climate change and its impacts Geochemistry Pollution http://metadata.un.org/sdg/3 Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation Mineralogy Nanoparticles PMF Indoor air quality SARS-CoV-2 Aerosol properties Desert dust Enfermedades Fly ash New particle formation Oxidative potential