【摘要】 利用2017—2019年银川都市圈贺兰山东路、贺兰山马莲口、石嘴山沙湖旅游区、吴忠教育园区、宁煤烯烃的NO、NO₂、NO_X、O₃质量浓度资料，对不同功能区臭氧（O₃）污染及超标特征进行了研究。结果表明：（1）近3年，贺兰山东路、贺兰山马莲口、沙湖旅游区O₃质量浓度“先升后降”,吴忠教育园区O₃质量浓度升高，而宁煤烯烃O₃质量浓度“先降后升”。（2）各站点平均O₃质量浓度最高值出现在6—7月，其中贺兰山东路O₃质量浓度值最大，为215.4μg/m³,教育园区O₃质量浓度值最小，为160.9μg/m³。（3）各站点O₃质量浓度的日变化呈单峰型分布，一天中O₃质量浓度最高值出现在16:00—17:00,最低值出现在08:00前后。（4）O₃质量浓度超标主要集中在5—8月；O₃质量浓度累计超标时数银川最多，其次为石嘴山，最少为宁东；交通居民混合区贺兰山东路O₃最高时均值和超标率较大，吴忠O₃超标平均质量浓度较高。更多还原

【Abstract】 Based on the concentration data of NO,NO₂,NO_X and O₃ from Helan Mountain East Road, Helan Mountain Maliankou, Shizuishan Shahu tourist area, Wuzhong Education Park and Ningcoal olefins in Yinchuan metropolitan circle from 2017 to 2019,the characteristics of ozone（O₃） pollution and overstandard in different functional areas were studied.The results showed that（1）In recent 3 years, O₃ concentration in Helan Mountain East Road, Helan Mountain Maliankou, Shahu tourist area first increased and then decreased, O₃ concentration in Wuzhong Education Park increased, and Ningcoal olefins first decreased and then increased.（2）The highest average O₃ concentration occurred in June and July, among which the maximum value of Helan Mountain East Road was 215.4 μg/m³,and the minimum value of Education Park was 160.9 μg/m³.（3）The diurnal variation of the ozone was unimodal type distribution, the highest ozone concentration appeared between 16:00 and 17:00 and the lowest around 8:00.（4）The O₃ exceeding standard was mainly concentrated in May and August; Yinchuan had the highest cumulative hours of exceeded ozone, followed by Shizuishan and Ningdong at least.In the mixed area of traffic residents, the highest average time and the exceeding standard rate of O₃ in Helan Mountain East Road were relatively large, while the exceeding standard average concentration of O₃ in Wuzhong was relatively high.更多还原