Characterization of coal burning-derived individual particles emitted from an experimental domestic stove
| Autor: | Chengmei Zhao, Jing Wang, Junxia Liu, Longyi Shao, Chunmei Geng, Cong Hou |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
China
Environmental Engineering Materials science 010504 meteorology & atmospheric sciences Coal combustion products 010501 environmental sciences medicine.disease_cause Combustion complex mixtures 01 natural sciences Atmosphere chemistry.chemical_compound otorhinolaryngologic diseases medicine Environmental Chemistry Coal Cooking Sulfate 0105 earth and related environmental sciences General Environmental Science Air Pollutants business.industry Metallurgy technology industry and agriculture General Medicine respiratory system Soot respiratory tract diseases Characterization (materials science) chemistry Stove business Environmental Monitoring |
| Zdroj: | Journal of environmental sciences (China). 71 |
| ISSN: | 1001-0742 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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