Ambient concentrations and dosimetry of inhaled size-segregated particulate matter during periods of low urban mobility in Braganca, Portugal.

ABSTRACT: The restrictive measures in place during the COVID-19 pandemic provided a timely scenario to investigate the effects of human activities on air quality, and the extent to which mobility reduction strategies can impact atmospheric pollutant levels. Real-time concentrations of PM₁, PM_2.5 and PM₁₀ were measured using a mobile platform in a small city of Portugal, during morning and afternoon rush hours, in two distinct phases of the pandemic: emergency phase (cold period, lockdown) and calamity phase (warm period, less restricted). The Multiple-Path Particle Dosimetry Model (MPPD) was used to calculate the PM deposition for adults. Large spatio-temporal variabilities and pronounced changes in mean PM concentrations were observed, with lower concentrations in t

SUBMITTER: Cipoli YA 

PROVIDER: S-EPMC9371474 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature