遂宁市近地面臭氧污染现状及对策建议

Current Situation and Countermeasures of Surface Ozone Pollution in Suining City

根据2018年遂宁市4个国控环境空气自动监测数据,分析了臭氧污染的现状,研究了臭氧污染变化特征及污染原因。结果发现:2018年遂宁市城区臭氧小时平均浓度为147μg/m^3,在全省排行第11位,较全省均值高出15μg/m^3;臭氧高值浓度主要集中在4~9月,呈现出夏秋季节显著高于春冬季节特征;臭氧浓度日变化呈现出倒U型分布,一般在14~15时达到峰值。结合臭氧污染的现状,从全国污染状况、区域污染、氮氧化物浓度变化以及治理4个方面分析了臭氧污染的原因,并有针对性地提出了4点对策建议。

Based on automatic monitoring data of air in four state-controlled environments in Suining City in 2018,the current situation of ozone pollution was analyzedand the change characteristics and pollution reason of ozone was researched.The results demonstrated that the annual concentration of ozone in Suining was about 147μg/m^3,which ranks 11 th in the Sichuan province and the value which its concentration higher than the average of the whole province was 15 ug/m^3.The high ozone concentration mainly concentrated in April and September,and seasonal variations concentrations of ozone were as winter and spring>autumn and summer.The diurnal distribution of ozone presented a clear unimodal pattern with its peak appearing at 14:00 or 15:00.According to the ozone pollution current situation,the causes of ozone pollution were analyzed from four aspects:national pollution situation,regional pollution,changes of nitrogen oxide concentration and pollution control.Four countermeasures and suggestions were put forward.