| 民用燃煤排放分级颗粒物中碳组分排放因子 |
| 摘要点击 2188 全文点击 698 投稿时间：2017-11-08 修订日期：2018-02-14 |
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| 中文关键词 民用煤燃烧 稀释通道 碳组分 排放因子 粒径分布 |
| 英文关键词 domestic coal burning dilution sampling carbonaceous components emission factor size distribution |
| 作者 | 单位 | E-mail | | 杨国威 | 中国地质大学(武汉)环境学院大气科学系, 武汉 430074 | yanggw@cug.edu.cn | | 孔少飞 | 中国地质大学(武汉)环境学院大气科学系, 武汉 430074
南京信息工程大学气象灾害预报预警与评估协同创新中心, 南京 210044 | kongshaofei@cug.edu.cn | | 郑淑睿 | 中国地质大学(武汉)环境学院大气科学系, 武汉 430074 | | | 吴剑 | 中国地质大学(武汉)环境学院大气科学系, 武汉 430074 | | | 郑明明 | 中国地质大学(武汉)环境学院大气科学系, 武汉 430074 | | | 郑煌 | 中国地质大学(武汉)环境学院大气科学系, 武汉 430074 | | | 严沁 | 南京信息工程大学大气物理学院, 南京 210044 | | | 刘海彪 | 南京信息工程大学大气物理学院, 南京 210044 | | | 王伟 | 南京信息工程大学大气物理学院, 南京 210044 | | | 吴方琪 | 中国地质大学(武汉)环境学院大气科学系, 武汉 430074 | | | 程溢 | 中国地质大学(武汉)环境学院大气科学系, 武汉 430074 | |
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| 中文摘要 |
| 中国是全球碳质气溶胶最重要的贡献者之一，民用燃煤排放占有很大的比重.排放因子的不确定性直接影响碳气溶胶排放清单的准确性.本研究基于室内模拟燃烧实验和稀释通道采样系统，采用FA-3型9级撞击采样器采集了3种蜂窝煤（考虑明烧和闷烧）和包括烟煤与褐煤在内的4种块煤燃烧排放的九级粒径颗粒物，采用热光法分析了不同粒径颗粒物中有机碳（OC）和元素碳（EC）的含量，计算得到排放因子.结果表明：①对于蜂窝煤的明烧与闷烧，PM2.1中OC排放因子分别为0.07 g·kg-1和0.10 g·kg-1，EC的排放因子为0.002 g·kg-1和0.001 g·kg-1；闷烧排放的有机碳颗粒物高于明烧；元素碳排放因子低于明烧.块煤排放PM2.1中OC与EC排放因子分别是1.4 g·kg-1和0.02 g·kg-1，高出蜂窝煤排放一个数量级.②粒径分析结果表明，民用煤燃烧排放的颗粒物及其载带的碳组分集中在细颗粒物上，碳组分的质量中值粒径均小于2.5 μm，总碳（OC+EC）的排放因子粒径分布表明蜂窝煤燃烧排放的碳组分富集于≤ 0.43 μm粒径段，块煤富集于0.43~0.65 μm粒径段. |
| 英文摘要 |
| China is one of the most important contributors to the global burden of carbonaceous aerosols, of which domestic coal combustion occupies a large fraction. Uncertainty in the emission factors (EFs) directly influences the accuracy of corresponding emission inventories. In the present study, based on domestic burning tests with a dilution sampling system, nine size-segregated particle classes emitted from the burning of three kinds of honeycomb coals (under flaming and smoldering burning conditions) and four kinds of chunk coals, including bituminous and lignite, were collected via a cascade impactor (FA-3). Organic and elemental carbon (OC and EC, respectively) were analyzed using the thermal-optical method. The EFs of particulate matter (PM), OC, and EC for nine size ranges were obtained. For honeycomb coals, the EFs of OC and EC in PM2.1 were 0.07 g·kg-1 and 0.002 g·kg-1, respectively, under flaming burning conditions and 0.10 g·kg-1 and 0.001 g·kg-1, respectively, under smoldering burning conditions. Carbonaceous particles exhibited higher EFs under flaming burning conditions. For chunk coals, the EFs of OC and EC in PM2.1 were 1.4 g·kg-1 and 0.02 g·kg-1, respectively, which are about one magnitude higher than those for honeycomb coal burning. Particulate matter and its associated carbonaceous components preferred to concentrate in fine particles. The EFs of carbonaceous components peaked at the size of ≤ 0.43 μm and 0.43-0.65 μm for honeycomb coal burning and chunk coal burning, respectively. |
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