Air Quality Index, Indicatory Air Pollutants and Impact of COVID-19 Event on the Air Quality near Central China by Kaijie Xu, Kangping Cui, Li-Hao Young, Ya-Fen Wang, Yen-Kung Hsieh, Shun Wan, Jiajia Zhang

“…Abstract Both the air quality index (AQI) and indicatory air pollutants of Anqing, Hefei, and Suzhou near central China from 2017 to 2019, and the impact of COVID-19 epidemic prevention and control actions on air quality were investigated. …”
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