Analysis of VOCs Pollution Characteristics Based on Navigation Monitoring in Weihai City
In order to promote the implementation of fine urban air quality management and realize the precise control of VOCs pollution sources,the dual-channel mass spectrometry analysis system combined with manual monitoring was used to map VOCs pollution in key areas of Weihai City in September 2022.During the navigation monitoring period,the overall VOCs concentration was displayed as industrial park＞main urban area＞suburban area,and the VOCs composition of the three regions was significantly different.A total of 52 abnormal points were found,and the industrial park was the largest,accounting for 88.5％.According to the analysis results of abnormal point species,abnormal point VOCs in the main urban area of Weihai city mainly come from the instantaneous emission of refuting gas stations,the abnormal point VOCs in the suburbs mainly come from the emission of road construction and automobile repair spraying,and the VOCs in the industrial park mainly come from the unorganized emission of organic chemicals,surface painting,packaging and printing industries.According to the main factors contributing to ozone generation and the B/T characteristic value,it is suggested that the main urban area should strengthen the emission of motor vehicle exhaust,oil volatilization at gas stations,fossil fuel combustion,etc.,and the suburban area should pay attention to the VOCs emission of motor vehicles and solvent use.Industrial zones and areas where industrial enterprises are concentrated are mainly targeted for enterprises with related processes such as solvent and paint use.
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