一次污染物对臭氧生成的影响研究

利用OZIPR模式模拟研究一次污染物对φ(O₃)的影响,研究设计3组比较方案:VOC和NO_x初始浓度比,VOC和NO_x排放比以及VOC排放中各组分所占比例的变化对臭氧生成浓度的影响.结果表明:随着VOC与NO_x初始浓度比和排放比的增大,φ(O₃)增长速率提高,其最大值出现时间提前,并且呈现先上升后下降的变化规律.结合O₃等浓度线分析认为,深圳市O₃污染属于VOC敏感型,控制VOC是控制φ(O₃)的有效途径.改变VOC组分的研究表明,控制VOC排放时应重点控制含乙烯、二甲苯、三甲苯较多的污染源. 

Study on the Impact of Primary Pollutants on Ozone Formation

The OZIPR model was used to study the impact of primary pollutants on the changes of ozone concentration.Three comparable modeling scenarios were designed: changing initial concentration ratio of VOC and NO_x,changing emission ratio of VOC and NO_x,and changing the composition of VOC.The results show that with the increase of the initial concentration ratio and emission ratio of VOC and NO_x,and with the increase of the ozone concentration growth rate,the occurrence time of maximum ozone concentration will be brought forward,and the daily peak value of ozone concentration will increase first,and then decrease to some extent.Combined with the analysis of the isopleths of ozone concentration,it is proposed that the ozone pollution in Shenzhen City is VOC sensitive,and the control of VOC emission is an efficient way of ozone control.According to the study on the change of VOC composition,it is indicated that the emphasis should be put on controlling the pollution sources with much EHTH,XYLE and TMBZ for the control of VOC.