With the rapid development of the economy, the pollution of nitrogen oxides has been more and more serious recently.Shanghai Xuhui District is located in the centerof the city, nitrogen oxide pollution is influenced by many factors.According to the monitoring data of Xujiahui Park, Shanghai Normal University andHuajing Town, the pollution of nitrogen oxides in the air was higher in winter and good in summer.The pollution situation of Huajing Town is more serious.The pollution is mainly affected by industrial pollution sources and motor vehicle exhaust.%近年来,随着经济的迅速发展,氮氧化物的污染问题日益严重,上海市徐汇区地处市中心,氮氧化物的污染受多方面因素的影响.根据徐家汇公园、上师大及华泾镇三个监测点的监测数据,空气中氮氧化物在冬季的污染程度高,夏季情况良好.华泾监测点的污染情况较严重,污染主要受工业污染源及机动车尾气污染的影响.综上所述,氮氧化物的污染呈季节性变化趋势,冬季污染程度高,夏季污染程度低.氮氧化物污染主要影响因素包括工业尾气排放,化学燃料燃烧以及机动车尾气的排放.
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