Air Quality Before and After COVID-19 Lockdown Phases Around New Delhi, India.

ABSTRACT:

Background

The COVID-19 pandemic has had a deep global impact, not only from a social and economic perspective, but also with regard to human health and the environment. To restrict transmission of the virus, the Indian government enforced a complete nationwide lockdown except for essential services and supplies in phases from 25 March to 31 May 2020. Ambient air quality in and around New Delhi, one of the most polluted cities of world, was also impacted during this period.

Objective

The aim of the present study was to assess and understand the impact of four different lockdown phases (LD1, LD2, LD3 and LD4) on five air pollutants (particulate matter (PM) PM_2.5, PM₁₀, nitrogen oxide (NO_x), sulfur dioxide (SO₂) and ozone (O₃

SUBMITTER: Chaudhary S 

PROVIDER: S-EPMC8276728 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature