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题名: Influence of sulfur in fuel on the properties of diffusion flame soot
作者: Zhao, Yan; Ma, Qingxin; Liu, Yongchun; He, Hong
刊名: ATMOSPHERIC ENVIRONMENT
出版日期: 2016-10
卷号: 142, 期号:0, 页码:383-392
关键词: Sulfur-containing fuel ; Sulfate species ; Alkynes ; Primary particle size ; Number concentration ; Hygroscopicity
DOI: 10.1016/j.atmosenv.2016.08.001
部门归属: 大气污染控制中心
英文摘要: Previous studies indicate that sulfur in fuel affects the hygroscopicity of soot. However, the issue of the effect of sulfur in fuel on soot properties is not fully understood. Here, the properties of soot prepared from fuel with a variable sulfur content were investigated under lean and rich flame conditions. Lean flame soot was influenced more by sulfur in fuel than rich flame soot. The majority of sulfur in fuel in lean flame was converted to gaseous SO2, while a small fraction appeared as sulfate and bisulfate (referred to as sulfate species) in soot. As the sulfur content in fuel increased, sulfate species in lean flame soot increased nonlinearly, while sulfate species on the surface of lean flame soot increased linearly. The hygroscopicity of lean flame soot from sulfur-containing fuel was enhanced mainly due to sulfate species. Meanwhile, more alkynes were formed in lean flame. The diameter of primary lean flame soot particles increased and accumulation mode particle number concentrations of lean flame soot from sulfur containing fuel increased as a result of more alkynes. Because the potential effects of soot particles on air pollution development greatly depend on the soot properties, which are related to both chemical aging and combustion conditions, this work will aid in understanding the impacts of soot on air quality and climate. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35757
Appears in Collections:大气污染控制中心_期刊论文

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