【摘要】 以九段串级式撞击采样器对南京市气溶胶进行采样测定。经统计分析发现 ,气溶胶呈双峰分布 ,粒度分布规律明显 ,峰值粒径在 0 .37μm～ 0 .6 5 μm和 4 .3μm～ 5 .6 μm之间 ;气溶胶浓度季节变化显著 ,秋季 >夏秋 ;秋季颗粒物中细粒子质量百分比较夏季的多 ,两季质量中位直径分别为 6 .5 μm、4 .4 μm ,说明与季节变化密切相关。更多还原

【Abstract】 The 9 steps series impact sample collector is used to monitor aerosol sample in Nanjing City Proper,statistical analysis discorers that aerosol shows double peak distribution with obvious particle distribution law and peak particle diameter between 0.37～0.65 μm to 4.3～5.6 μm,Seasonal aerosol concentration changes significantly,autumn>summer,that is, the fine particle quality percentage in autunm is bigger than that in summer. The mean particle diameters are 6.5 μm and 4.4 μm separately. It indicates that it’s colosely related with seasonal changes.更多还原