Pollution characteristics and sources of environmentally persistent free radicals and oxidation potential in fine particulate matter related to city lockdown (CLD) in Xi'an, China.

ABSTRACT: The impact of COVID-19 control on air quality have been prevalent for the past two years, however few studies have explored the toxicity of atmospheric particulate matter during the epidemic control. Therefore, this research highlights the characteristics and sources of oxidative potential (OP) and the new health risk substances environmentally persistent free radicals (EPFRs) in comparison to city lockdown (CLD) with early days of 2019-2020. Daily particulate matter (PM_2.5) samples were collected from January 14 to February 3, 2020, with the same period during 2019 in Xi'an city. The results indicated that the average concentration of PM_2.5 decreased by 48% during CLD. Concentrations of other air pollutants and components, such as PM₁₀, NO₂, SO<

SUBMITTER: Ainur D 

PROVIDER: S-EPMC9558116 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature