Assessing the Regional Influence and Altitude Effect on Volatile Organic Compounds in Petrochemical Zone of Eastern China

High emission of volatile organic compounds from the petrochemical industry may contribute to high ozone formation potential. This study aimed to eastern China, the rapidly developing region, to explore the characteristics and changes of ozone precursor - volatile organic compounds from both regional transmission and vertical distribution in petrochemical industry. Three months monitoring of the volatile organic compounds in the region was achieved by a six - station network in Jinshan petrochemical industry ozone in Shanghai. We classify the monitoring station using meteorological parameters to explore the influence of transmission of volatile organic compounds in region. Seventy percentage variation of volatile organic compounds can be explained by this classification analysis. We even identified the sources of volatile organic compounds in region by combining the fingerprint volatile organic compounds and the ratios of xylene/benzene and benzene/toluene. The vertical profiles of volatile organic compounds were conducted for the northwest of the Jinshan petrochemical industry ozone. Vertical air samples were collected up to 500 m using an unmanned aerial vehicle. The maximum volatile organic compounds, ozone formation potential stratified by height were the highest values blow 200m, that indicated that the invention layer caused the volatile organic compounds accumulation. Changes of benzene, toluene and xylene with height revealed the degree of aged air mass and sources of air mass.