重庆市渝中区臭氧时空变化规律因素分析研究

臭氧是城市光化学烟雾的主要成分,同时也是重要的温室气体,因此臭氧污染已经成为城市空气质量的重要因素.对重庆市渝中区2015年3个空气质量自动监测点臭氧浓度进行比较,并分析了臭氧与环境、日照、气温、挥发性有机物、NO2、PM10、PM2.5的相关性.结果表明:臭氧浓度与监测点周围环境有关;臭氧浓度呈典型的季节变化趋势,与日照、气温呈明显的正相关;臭氧浓度小时值变化出现明显的日变化规律;臭氧浓度与挥发性有机物呈正相关,与NO2、PM10、PM2.5有较好的负相关性.

Influencing Factors for Temporal and Spatial Variation of Ozone in Yuzhong District of Chongqing

Ozone is a main component of urban photochemical smog and an important greenhouse gas, so ozone pollution has become an important factor that leads to poor urban air quality. The ozone concentrations in three air quality-monitoring stations in Yuzhong District of Chongqing were compared. The correlation of ozone with the environment, sunshine, air temperature, volatile organic compounds, NO2 , PM10 and PM2. 5 was analyzed. The results showed that the concentration of ozone was related to the envi-ronment of the monitoring sites, the concentration of ozone was a typical seasonal variation trend, and it was positively correlated with the sunshine and air temperature. The ozone concentration showed a significant diurnal variation pattern;the concentration of o-zone was positively correlated with the volatile organic matter, and had a good negative correlation with NO2 , PM10 and PM2. 5 .