jailcd2019-071: Summary of Atmospheric Particulate Matter Characteristics in Beijing

Abstract

In this paper, the characteristics of atmospheric particulate matter in Beijing are summarized based on the existing research results. The chemical composition of atmospheric particulates is very complex, including a large  number  of mineral  oxides,  soluble  sulfates,  nitrates,  sea  salts,  polycyclic  aromatic  hydrocarbons, organic acids and organic chlorine. Atmospheric particulates play an important role in local, regional and even  global  atmospheric  radiation  balance,  atmospheric  visibility  and biochemical  cycling  of elements, endangering human health and participating in heterogeneous atmospheric reactions. Chemical composition is the key factor determining the environmental effects of atmospheric particulate matter.The characteristics of atmospheric particulate matter are described in five aspects: the definition of atmospheric particulate matter, the influence of climate season, concentration and particle size distribution, and secondary particulate matter.