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开展对典型可燃物燃烧烟尘的物化特性差异性研究,是全面了解烟尘信息的基础。基于可控条件下的燃烧试验,对典型可燃物燃烧烟尘物理特性和化学组分进行了分析。通过对比分析汽油燃烧烟尘、聚苯乙烯燃烧烟尘、ABS燃烧烟尘及柴油烟尘和正庚烷烟尘的透射电镜图片,对透射电镜图的紧凑性、复杂性及灰度值进行了深入分析,探讨了燃烧烟尘的物理差异性。利用固相微萃取-气质联用技术(SPME-GC-MS),对汽油燃烧烟尘、聚苯乙烯燃烧烟尘、ABS燃烧烟尘化学组分进行了分析和对比。通过燃烧烟尘的特征物质组分的分析,得到3种燃烧烟尘在特征物质的分布和出峰时间等方面的差异性。这些差异性可作为对烟尘来源及燃烧条件等因素判别的依据。
Carrying out the study on the difference of physico-chemical characteristics of typical combustibles combustion soot is the basis for comprehensive understanding of smoke and dust information. Based on the combustion test under controllable conditions, the physical characteristics and chemical composition of typical combustible soot combustion were analyzed. By comparing the transmission electron microscope images of gasoline combustion soot, polystyrene combustion soot, ABS combustion soot, diesel soot and n-heptane soot, the compactness, complexity and gray value of TEM were analyzed in depth. The effects of combustion Physical differences between soot and dust. The chemical components of gasoline combustion soot, polystyrene combustion soot and ABS combustion soot were analyzed and compared by SPME-GC-MS. Through the analysis of the characteristic components of the combustion soot, the differences of the distribution and the peak time of the three kinds of combustion soots in the characteristic substances are obtained. These differences can be used as a source of smoke and combustion conditions and other factors to determine the basis.