PM2.5 emissions, concentrations and air quality index during the COVID-19 lockdown Published on 2021-03-012023-07-11 Journal: Environmental pollution (Barking, Essex : 1987) [키워드] air quality index concentrations COVID-19 Emissions lockdown PM2.5 [저자] Néstor Y Rojas, Omar Ramírez, Luis Carlos Belalcázar, Juan Felipe Méndez-Espinosa, Jorge Mario Vargas, Jorge Eduardo Pachón [Category] SARS, PMC URL Pubmed URL [DOI] 10.1016/j.envpol.2020.115973 [Source] pubmed All Keywords 【저자키워드】 COVID-19, lockdown, PM2.5, air quality index, Emissions, concentrations,