城市区域大气颗粒物的污染特征研究

Research on the Pollution Property of Atmospheric Particulates in City Region

从城市区域大气颗粒污染物的化学组成、粒径大小、来源三个方面研究了其对地球环境和人体健康污染程度大小的影响以及扩散迁移能力等污染特征,结果表明:以光化学污染为主的复合型污染是目前城市区域大气颗粒物污染的主要形式和发展趋势;二次颗粒物和积聚区颗粒物是最主要的污染物质,应成为大气环境治理相关方针政策制定和大气颗粒物污染机理研究的重点对象。

One of the main factors leading to the serious atmospheric particulate matter pollution in city region is due to the acceleration of the process of economic construction in China.This paper studies atmospheric particulate matte from its chemical composition,particle size and sources,with its harm to earth environment and human health and its migration and proliferation.The results show that the composite pollution,with the photochemical pollution in dominance,is the main form of particulate matter pollution in city region at present.The paper also points out that the main pollutants are the secondary particulate matter and the particulate matter in accumulation mode,which should be taken as the important objects in the decision-making by the government of controlling atmospheric environment and in the investigation by experts of the mechanism of atmospheric particulate matter pollution.