PDF(Pubmed)
Abstract：
Soot particles, composed of elemental carbon and organic compounds, have attracted widespread attention in recent years due to their significant impacts on climate, the environment and human health. Soot has been found to be chemically and physically active in atmospheric aging processes, which leads to alterations in its composition, morphology, hygroscopicity and optical properties and thus changes its environmental and health effects. The heterogeneous reactions on soot also have a significant impact on the transformation of gaseous pollutants into secondary aerosols. Therefore, the interactions between soot and atmospheric substances have been widely investigated to better understand the environmental behaviors of soot. In this review, we systematically summarize the progress and developments in the heterogeneous chemistry on soot over the past 30 years. Atmospheric trace constituents such as NO2, O3, SO2, N2O5, HNO3, H2SO4, OH radical, HO2 radical, peroxyacetyl nitrate etc., are presented in detail from the aspect of their heterogeneous reactions on soot. The possible mechanisms and the effects of environmental conditions on these heterogeneous reactions are also addressed. Further, the impacts of the heterogeneous reactions of soot on the atmospheric environment are discussed, and some aspects of soot-related research which require further investigation are proposed as well.
摘要：
烟尘颗粒,由元素碳和有机化合物组成，由于它们对气候的重大影响，近年来引起了广泛关注，环境和人类健康。已发现烟灰在大气老化过程中具有化学和物理活性，导致其组成发生变化，形态学,吸湿性和光学特性，从而改变其对环境和健康的影响。烟灰上的非均相反应对气态污染物转化为二次气溶胶也有重大影响。因此,为了更好地了解烟尘的环境行为，人们对烟尘与大气物质之间的相互作用进行了广泛的研究。在这次审查中,我们系统地总结了近30年来烟灰非均相化学的进展和发展。大气中微量成分如NO2、O3、SO2、N2O5、HNO3、H2SO4、OH,HO2自由基，过氧乙酰硝酸盐等.,从它们在烟灰上的非均相反应方面进行了详细介绍。还讨论了可能的机理和环境条件对这些多相反应的影响。Further,讨论了烟灰的非均相反应对大气环境的影响，并提出了一些需要进一步调查的烟尘相关研究的方面。
