中文摘要：

使用β射线测尘仪、EMS污染气体监测系统、安德森9级采样器和IC型离子色谱分析仪对2013年8月10~28日南京市亚青会期间PM2.5、污染气体和水溶性离子进行了观测分析.结果表明,在亚青会期间PM2.5、NO2、O3和CO的浓度分别为37.0、19.3、48.1和0.7×103μg·m-3,分别比亚青会前降低了26.0%、42.6%、36.1%和46.1%.亚青会期间,细粒子段主要水溶性离子为Na+、NH+4、Ca2+和SO2-4,占80.6%;粗粒子段主要水溶性离子为Na+、Ca2+、NO-3和SO2-4,占77.9%.Ca2+、Mg2+和NO-3在亚青会期间为双峰型分布,其余离子为三峰型分布;亚青会前和后水溶性离子均为三峰型分布.由NO-3/SO2-4的值判断亚青会前和后南京市SO2和NOx主要来自于移动源,在亚青会期间主要来自固定源.

英文摘要：

Water soluble ions were observed by an Andersen cascade impactor (Andersen) and ion chromatography in Nanjing during the Asian Youth Games (AYG), and PM2. 5 , NO, NO2 , O3 and CO were observed by ray β dust instrument, EMS pollution gases monitoring system. Concentrations of PM2. 5 , NO2 , O3 and CO, were 37. 0, 19. 3, 48. 1 and 0. 7 × 103 μg·m - 3 during the AYG period, 26. 0% , 42. 6% , 36. 1% and 46. 1% lower than the value before the AYG period. During the AYG period, the main water-soluble ions in PM2. 1 were Na + , NH +4 , Ca2 + and SO2 -4 , accounting for 80. 6% ; the main water-soluble ions in PM2. 1-10 were Na + , Ca2 + , NO -3 and SO2 -4 , accounting for 77. 9% . The spectral distribution of Ca2 + , Mg2 + and NO -3 were bimodal during the AYG period, other ions were three models. Before and after the AYG period, all ions were three models. From NO -3 / SO2 -4 , we can judge SO2 and NOx mainly come from the mobile source before and after the AYG period, from stationary sources during the AYG period.