南京北郊 O3、NO2和 SO2变化特征分析

利用 2008年1-12月南京北郊O₃、NO₂及SO₂质量浓度连续观测资料，分析了南京北郊气体污染物(O₃、NO₂、SO₂) 的质量浓度变化规律。结果表明：南京北郊O₃浓度夏季较高，日变化曲线呈单峰型，NO₂和SO₂浓度夏季较低，日变化曲线呈双峰型，NO₂与O₃的日变化呈现负相关关系，该地区SO₂浓度整体较高，夏季周末效应NO₂和SO₂较O₃更明显。

Characteristics of SO2 , NO2 and O3 in the northern suburb of Nanjing

Based on the atmospheric pollutants data from a differential optical absorption spectroscopy (DOAS) system in Nanjing University of Information Science and Technology, the mass concentrations of O₃, NO2 and SO₂ in the northern suburb of Nanjing from January to November in 2008 were analyzed. The results indicate that the monthly mean mass concentrations of O₃ are high in summer, while both mass concentrations of NO₂ and SO₂ are low in summer. The diurnal variation curve of O₃ mass concentrations is mono-modal, while both curves of NO₂ and SO₂ mass concentrations are bimodal. The correlation between diurnal NO₂ and O₃ mass concentrations is negative. The SO2 mass concentrations are generally high in this region, and the weekend effect is more apparent for NO₂ and SO₂thanfor O₃ in summer.