Impact of the demolition and relocation of chemical enterprises along the Yangtze River on air quality in Jingzhou City / 公共卫生与预防医学

ABSTRACT

Objective To evaluate the impact of demolition and relocation of chemical enterprises on air quality in Jingzhou City. Methods Based on the “Ambient air quality standards” (GB3095-2012), the daily average air quality index (AQI), and the concentration changes of six pollutants in the central urban area of Jingzhou, the air quality before, during and after the demolition and relocation of chemical enterprises during the environmental governance period from 2017 to 2019 was evaluated. Results The investigation results showed that the demolition and relocation of chemical enterprises had improved the local air quality to some certain extent, especially the decrease of SO2 concentration, especially for SO2, but the concentration changes of PM10 and O3 were not noticeable. At the same time, because of the attenuation of the implementation of the long-term policy, the improvement of air quality fluctuated. Conclusion This study suggests that further improvement of air quality in Jingzhou City may face the difficulty of O3 control and insufficient implementation of long-term policies in the future. It is a long-term policy to improve the environment through the renovation of chemical enterprises, and the corresponding regulatory measures need to be updated dynamically to ensure the implementation of the policy.