摘要
灰霾现象在我国日趋严重,已成为一种新型灾害性天气。针对灰霾期间大气颗粒物中无机物、有机物的污染特征以及粒径分布特征进行综合分析,结果发现,灰霾期间PM2.5、有机碳和元素碳浓度明显增高;多环芳烃主要集中于细模态中,存在昼夜和季节差异;无机元素的质量浓度要高于非灰霾期,并且其污染水平存在季节差异;水溶性离子比非灰霾天气时浓度高,秋冬季污染高于春夏季。在今后研究中,应加强研发精密的观测设备,深入研究其物理化学特性;分析灰霾的主要污染源、形成条件及形成机制,从而探索预测和防控灰霾发生。
Haze,a new type of disastrous weather,has become a more and more serious problem.The properties of the organic and inorganic compounds and size distribution of aerosols were analyzed during haze episodes.The results indicated that the concentrations of PM2.5,organic carbon and element carbon are obviously increased,the size distribution of polycyclic aromatic hydrocarbons（PAHs） centres mainly at the fine mode with differences between day and night as well as different seasons,the concentration of inorganic element is higher than that of non-hazy days.The concentration of water soluble ions during hazy days is much more higher than the non-hazy days.In the next study,the new observation equipments need to be developed to study the physics and chemistry properties of aerosols.The sources and mechanism of haze would be analyzed to explore effective ways to predict and prevent haze.
基金
高等学校博士学科点专项科研基金资助项目(20103228120004)
国家自然科学基金资助项目(41005089)
江苏省高校自然科学基金资助项目(10KJB170009)
关键词
气溶胶
灰霾
化学特性
研究进展
aerosol
haze
chemical properties
research progress
