Urban air quality changes resulting from the lockdown period due to the COVID-19 pandemic.

ABSTRACT: This work aims to quantify potential pollution level changes in an urban environment (Madrid city, Spain) located in South Europe due to the lockdown measures for preventing the SARS-CoV-2 transmission. Polluting 11 species commonly monitored in urban zones were attended. Except for O₃, a prompt target pollutant levels abatement was reached, intensely when implanted stricter measures and moderately along those measures' relaxing period. In the case of TH and CH₄, it is evidenced a progressive diminution over the lockdown period. While the highest decreasing average changes relapsed on NOx (NO₂: - 40.0% and NO: - 33.3%) and VOCs (C₇H₈: - 36.3% and C₆H₆: - 32.8%), followed by SO₂ (- 27.0%), PM₁₀

SUBMITTER: Galan-Madruga D 

PROVIDER: S-EPMC9391654 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature