珠江三角洲大气颗粒物研究进展

珠江三角洲地区大气颗粒物污染严重,本文对该地区大气颗粒物的研究进展进行了综述。该地区大气颗粒物具有区域性污染特征。不同采样点不同时间离子浓度有明显差异,它们的形成和转化与大气化学过程有关。OC中的烷烃和多环芳烃多存在于细粒子中,并且二次OC含量较高。珠江三角洲地区大气颗粒物的污染源主要包括工业点源的排放、城市建设、机动车尾气等。

Study Progress of Atmospheric Particulate in the Pearl River Della Region

With the fast development of the Pearl River Delta Region(PRDR),some environmental problems appeared,such as high particulate matter(PM) levels.In this paper,the researches about atmospheric particulate matter are reviewed.Many researches show that the particulate matter pollution has regional and seasonal character.Researches about organic carbonaceous aerosol are highlighted,most of which are focused on n-alkanes and polycyclic aromatic hydrocarbons(PAHs) most of which exist in fine particles.Their main source is vehicle,and their concentration is high in low temperature seasons.The secondary OC is common in PRDR.Ions often have various concentration in different area,they may be related to the atmospheric chemical process.The results show that main source in Guangzhou are industry and vehicle etc.,and in Hongkong are construction and vehicle etc.