Measurements of emission factors of PM2.5, OC, EC, and BC for household stoves of coal combustion in China
Measurements of emission factors of PM2.5, OC, EC, and BC for household stoves of coal combustion in China
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我国家用燃煤炉灶PM2.5、OC、EC、BC排放因子测定
DOI：
10.1016/j.atmosenv.2015.03.023
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发表时间：
2015-05-01
影响因子：
5
通讯作者：
Zhang, Gan
中科院分区：
文献类型：
--
作者：
Chen, Yingjun;Tian, Chongguo;Zhang, Gan
为进一步研究我国家用煤炉细颗粒物（PM2. 5）及其碳组分的排放因子，设计了一套大型稀释采样系统，对5种不同地质成熟度的煤种和3种炉灶共20种煤/炉灶组合进行了测试。采用热-光反射法（TOR）对燃煤烟气中的有机碳（OC）和元素碳（EC）进行分析，并利用红外光谱仪（Aethalometer）对光学黑碳（BC）进行在线监测。基于PM2.5、OC、EC和BC的燃烧燃料重量的平均EFs分别为4.25 +/- 2.45、1.11 +/- 0.72、1.43 +/- 1.17和0.60 +/- 0.42 g/kg（烟煤），1.44 +/- 0.67、0.05 +/- 0.02、0.04 +/- 0.02、无烟煤为0.01 ± 0.01 g/kg。不同煤种/热风炉组合的燃烧效率存在显著差异，这是由于煤种成熟度、燃烧方式和热风炉效率的差异造成的。虽然BC和EC的EF值密切相关（r = 0.97），但BC/EC的平均比值仅为0.39，表明两种方法之间存在显著差距;新鲜煤烟气的光学衰减截面（sigma）可推断为6.47 m2/g，远低于制造商预设的Aethalometer的值16.6 m2/g。(C)2015爱思唯尔有限公司版权所有。
As follow-up efforts for measurements on emission factors (EFs) of fine particulate matter (PM2.5) and its carbonaceous fractions for China's household coal stoves, a large-sized dilution sampling system was designed to test a total of 20 coal/stove combinations, which involve five coals with wide-ranged geological maturities and three stoves. Coal smoke was simultaneously collected onto quartz filter for organic carbon (OC) and elemental carbon (EC) analyses by thermal-optical reflectance (TOR) protocol and monitored online for optical black carbon (BC) by Aethalometer. The mean EFs based on burned fuel weight of PM2.5, OC, EC, and BC are 4.25 +/- 2.45, 1.11 +/- 0.72, 1.43 +/- 1.17, and 0.60 +/- 0.42 g/kg for bituminous coal, and 1.44 +/- 0.67, 0.05 +/- 0.02, 0.04 +/- 0.02, and 0.01 +/- 0.01 g/kg for anthracite, respectively. Significant differences are observed among the EFs for various coal/stove combinations, which are attributable to the differences of coal maturity, burning style and stove efficiency. Although the EFs of BC and EC are closely correlated (r = 0.97), the average BC/EC ratio is only 0.39, indicating a significant gap between the two methods; and the optical attenuation cross-section (sigma) for fresh coal smoke can be deduced as 6.47 m(2)/g, much lower than the manufacturer's preset value of 16.6 m(2)/g for Aethalometer. (C) 2015 Elsevier Ltd. All rights reserved.