Morphology analysis of fine particulate matters (PM2.5) and their chemical compositions in University Campus environment

作者：Liu Jie; Hou Kepeng; Wang Xiaodong; Yang Peng; Liu Agudamu; Che Saijie; Mu Hongwei

来源：International Journal of Earth Sciences and Engineering, 2015, 8(6): 2801-2808.

• Ambient air
• Chemical compositions
• Fine particulate matter
• Morphology analysis
• Source identification

The atmospheric fine particulate matters (PM2.5) were sampled in campus environment of university of science and technology Beijing from December 2013 to March 2014. The morphology of PM2.5samples were observed by scanning electron microscopy (SEM), accordingly the chemical elements were analyzed by energy dispersive x-ray (EDX). On this basis, chemical compositions of PM2.5and their pollution sources were analyzed and identified by the methods of cluster, ternary phase diagram and enrichment factors. The results show: 1) The morphology of PM2.5can be classified into three types of chain, sphere, partial regularity and irregularity;2) The components of PM2.5are mainly quartz mine based on Si element;3) The enriched elements of PM2.5are S and Ba, which maybe mostly caused by coal combustion and vehicle exhaust pollution. Currently, the PM2.5pollution in university campus environment is seriously influenced by external regional environment of the city. Ground and anthropogenic effect become the main pollution sources. Results in this report provide useful references for controlling the PM2.5pollution.

• 出版日期2015
• 单位北京科技大学