Publications by authors named "Ankita Buwaniwal"
Long term analysis of air quality parameters for Ludhiana, India: sources, trends and health impact.
Environ Geochem Health
September 2024
Article Synopsis
- The COVID-19 lockdown in 2020 brought a significant drop in PM levels, yet some gaseous pollutants like carbon monoxide and nitrogen oxide increased, signalling changes in pollution sources.
- Analysis shows that ozone formation is highly likely during the observed period, with local emissions greatly affecting air quality before, during, and after the lockdown, indicating a complex relationship between different pollutants and their sources.
Gravimetry-based direct measurements of mass concentration require offline analysis which is not suited for field campaigns. Hence such campaigns rely on the estimation of mass concentration by indirect methods mostly calibrated in controlled laboratory conditions. Optical particle counter (OPC) employs algorithms converting the measured number concentration to mass concentration using appropriate conversion factors.
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