Characterization of coal burning-derived individual particles emitted from an experimental domestic stove

作     者：Cong Hou Longyi Shao Chengmei Zhao ling Wang Junxia Liu Chunmei Geng 

作者机构：College of Geosciences and Survey Engineering China University of Mining and Technology (Beijing) Beijin9 100083 China Hebei University of Economics and Business Shijiazhuang 0S0062 China Chinese Research Academy of Environmental Sciences Beijing 100012 China China Association of Circular Economy Beijing 100037 China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2018年第30卷第9期

页      面：45-55页

核心收录：

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：supported by the National Basic Research Program of China (973 Program) (No. 2013CB228503) the Projects of International Cooperation and Exchanges NSFC (No. 41571130031) 

主　　题：Coal combustion Individual particles Morphology Elemental composition TEM-EDX 

摘      要：Coal combustion in the domestic stoves, which is common in most parts of the Chinese countryside, can release harmful substances into the air and cause health issues. In this study, particles emitted from laboratory stove combustion of the raw powder coals were analyzed for morphologies and chemical compositions by using transmission electron microscopy （TEM） coupled with energy-dispersive X-ray spectrometry （EDX）. The coal burning-derived individual particles were classified into two groups： carbonaceous particles （including soot aggregates and organic particles） and non-carbonaceous particles （including sulfate, mineral and metal particles）. The non-carbonaceous particles, which constituted a majority of the coal burning-derived emissions, were subdivided into Si-rich, S-rich, K-rich, Ca-rich, and Fe-rich particles according to the elemental compositions. The Si-rich, S-rich and K-rich particles are commonly observed in the coal burning emission. The proportions for particles of different types exhibit obvious coal-issue dependence. Burning of coal with high ash yield could emit more non-carbonaceous particles, and burning of coal with high sulfur content can emit more S-rich particles. By comparing the S-rich particles from this coal burning experiment with those in the atmosphere, we draw a conclusion that some S-rich particles in the atmosphere in China could be mainly sourced from coal combustion.