Air Pollution Caused by Wildfires and Chemistry of Cr(VI) and Radicals

Abstract

The frequency and magnitude of wildfires are increasing because of global warming. Increasing temperatures and decreasing precipitation owing to global warming cause dryness, which increases the risk of wildfires. In addition, increased greenhouse gas emissions increase the likelihood of occurrence of extreme temperatures, thereby contributing to fires. Furthermore, wildfires cause air pollution over large areas, spread toxins, including PM2.5 and ozone, and increase health risks. Emissions of CO₂ in 2021 were the largest on record, largely because of wildfires in North America and Siberia. These impacts need to be regulated as these are detrimental to the natural environment and can cause respiratory and cardiovascular diseases.