The impact of COVID-19 lockdown on air pollution in Europe and North America: a systematic review.

ABSTRACT:

Background

Multiple studies report reductions in air pollution associated with COVID-19 lockdowns.

Methods

We performed a systematic review of the changes observed in hazardous air pollutants known or suspected to be harmful to health, including nitrogen dioxide (NO2), nitrogen oxides (NOx), carbon monoxide (CO), sulfur dioxide (SO2), ozone (O3) and particulate matter (PM). We searched PubMed and Web of Science for studies reporting the associations of lockdowns with air pollutant changes during the COVID-19 pandemic in Europe and North America.

Results

One hundred nine studies were identified and analyzed. Several pollutants exhibited marked and sustained reductions. The strongest was NO2 (93% of 89 estimated changes were reductions) followed by CO (88% of 33 estimat

SUBMITTER: Bakola M 

PROVIDER: S-EPMC9494388 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature