宁东基地2015—2017年臭氧污染特征分析
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摘要
利用2015—2017年宁夏宁东能源化工基地环境空气质量自动监测数据,研究宁东基地臭氧超标情况和时间变化规律,并分析其污染分布特征与相关影响因素。结果表明:臭氧逐渐成为影响宁东基地空气质量的主要污染物,臭氧污染情况逐年加重。臭氧浓度呈现季节性变化,夏季较高,污染集中在6—8月。O_3日变化呈明显单峰结构,12时至18时浓度最高。VOCS和NOx等前体物浓度及大气环境温度是影响宁东基地臭氧污染水平的主要因素。
Based on the air quality automatic monitoring data in Ningxia Ningdong Energy Chemical Base( Ningdong Base) during 2015-2017,the ozone pollution levels,its variation over time,distribution and influence factors in Ningdong Base were studied. Results showed that the ozone has become the main pollutant of ambient air quality in Ningdong Base and is becoming ever more serious year by year. The ozone pollution was most serious in summer from June to August. The daily variation showed an obvious unimodal distribution with the summit appearing between 12: 00 and 18: 00. The concentration of precursors such as VOCs,and NOx,and air temperature are the main factors affecting the ozone pollution level in Ningdong Base.
Based on the air quality automatic monitoring data in Ningxia Ningdong Energy Chemical Base( Ningdong Base) during 2015-2017,the ozone pollution levels,its variation over time,distribution and influence factors in Ningdong Base were studied. Results showed that the ozone has become the main pollutant of ambient air quality in Ningdong Base and is becoming ever more serious year by year. The ozone pollution was most serious in summer from June to August. The daily variation showed an obvious unimodal distribution with the summit appearing between 12: 00 and 18: 00. The concentration of precursors such as VOCs,and NOx,and air temperature are the main factors affecting the ozone pollution level in Ningdong Base.
引文
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[6]刘献辉,周兵利,陈建新,等.洛阳市老城区环境空气中臭氧污染特征及相关气象要素分析[J].环境研究与监测,2014(27):14-17.
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[8]李全喜,王金艳,刘筱冉,等.兰州市区臭氧时空分布特征及气象和环境因子对臭氧的影响[J].环境保护科学,2018,44(2):78-84.