山东省传输通道城市大气中VOCs污染特征及化学活性研究

Study on Pollution Characteristics and Chemical Activity of VOCs in Urban Atmosphere of Transmission Channel in Shandong Province

于2018年11月—2019年1月对山东7个传输通道城市大气中挥发性有机物(VOCs)开展现场监测,结合监测数据分析7市大气中VOCs污染特征。结果表明,监测期间7市大气中VOCs质量浓度范围为134μg/m^(3)~523μg/m^(3),平均值为313μg/m^(3),其中菏泽大气中VOCs浓度最高,聊城最清洁。菏泽大气的臭氧生成潜势最大,聊城最小。7市大气中VOCs的二次气溶胶生成潜势最大为济南,最小为济宁。菏泽大气中VOCs主要来自机动车尾气、涂料使用及溶剂挥发,济南、淄博、济宁和滨州大气中VOCs主要来源于机动车排放,德州和聊城大气中VOCs主要来源于煤炭燃烧。

Volatile organic compounds(VOCs)in the atmosphere of seven transmission channel cities in Shandong were monitored on site from November 2018 to January 2019.VOCs pollution characteristics were analyzed based on the monitoring data.The results showed that the mass concentration of VOCs in the atmosphere of the seven cities ranged from 134μg/m^(3) to 523μg/m^(3) during the monitoring period,with the average value of 313μg/m^(3).Among them,the concentration of VOCs in the atmosphere of Heze was the highest.Liaocheng was the cleanest city.Ozone generation potential was the highest in the atmosphere of Heze and the lowest in that of Liaocheng.Secondary aerosol generation potential of VOCs in the atmosphere of the seven cities was the largest in Jinan and the smallest in Jining.VOCs in the atmosphere of Heze mainly came from vehicle exhaust,coating use and solvent volatilization.VOCs in the atmosphere of Jinan,Zibo,Jining and Binzhou mainly came from motor vehicle emissions.VOCs in the atmosphere of Dezhou and Liaocheng were mainly from coal combustion.