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Time-Resolved Characterization of Primary Emissions from Residential Wood Combustion Appliances

机译：家用木材燃烧设备一次排放的时间分辨特征

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摘要

Primary emissions from a log wood burner and a pellet boiler were characterized by online measurements of the organic aerosol (OA) using a high-resolution time-of-flight aerosol mass spectrometer (HR-TOF-AMS) and of black carbon (BC). The OA and BC concentrations measured during the burning cycle of the log wood burner, batch wise fueled with wood logs, were highly variable and generally dominated by BC. The emissions of the pellet burner had, besides inorganic material, a high fraction of OA and a minor contribution of BC. However, during artificially induced poor burning BC was the dominating species with ～80% of the measured mass. The elemental O:C ratio of the OA was generally found in the range of 0.2- 0.5 during the startup phase or after reloading of the log wood burner. During the burnout or smoldering phase, O:C ratios increased up to 1.6-1.7, which is similar to the ratios found for the pellet boiler during stable burning conditions and higher than the O:C ratios observed for highly aged ambient OA The organic emissions of both burners have a very similar H:C ratio at a given O:C ratio and therefore fell on the same line in the Van Krevelen diagram.
机译：通过使用高分辨率飞行时间气溶胶质谱仪（HR-TOF-AMS）和黑碳（BC）在线测量有机气溶胶（OA）来表征原木燃烧器和颗粒锅炉的主要排放物。在原木燃烧器燃烧周期中测得的OA和BC浓度变化很大，通常以BC为主。除无机材料外，颗粒燃烧器的排放物还含有大量的OA和少量的BC。但是，在人为诱导的不良燃烧期间，BC是占测量质量的80％的主要物种。在启动阶段或重新装入原木燃烧器之后，通常发现OA的元素O：C比在0.2-0.5的范围内。在燃尽或阴燃阶段，O：C的比值增加到1.6-1.7，这与稳定燃烧条件下颗粒锅炉的比值相似，并且比在高老化的环境OA中观察到的O：C值要高。在给定的O：C比率下，两个燃烧器的H：C比率非常相似，因此落在Van Krevelen图的同一条线上。

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  • 来源
    《Environmental Science & Technology》 |2012年第20期|p.11418-11425|共8页
  • 作者

    M. F. Heringa; P. F. DeCarlo; R. Chirico; A. Lauber; A Doberer; J. Good; T. Nussbaumer; A. Keller; H. Burtscher; A. Richard; B. Miljevic; A. S. H. Prevot; U. Baltensperger;

  • 作者单位

    Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland;

    Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland,Department of Civil, Architectural and Environmental Engineering, Drexel University, Philadelphia, Pennsylvania, United States;

    Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland,Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), UTAPRAD- D1M, Via E. Fermi 45, 00044 Frascati, Italy;

    Lucerne University of Applied Sciences and Arts, 6002 Luzern, Switzerland;

    Lucerne University of Applied Sciences and Arts, 6002 Luzern, Switzerland,Labor Veritas AG, 8002 Zurich, Switzerland;

    Lucerne University of Applied Sciences and Arts, 6002 Luzern, Switzerland;

    Lucerne University of Applied Sciences and Arts, 6002 Luzern, Switzerland;

    Institute for Aerosol and Sensor Technology, University of Applied Sciences, Northwestern Switzerland, 5210 Windisch, Switzerland;

    Institute for Aerosol and Sensor Technology, University of Applied Sciences, Northwestern Switzerland, 5210 Windisch, Switzerland;

    Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland,University of Applied Sciences, Northwestern Switzerland, 5210 Windisch, Switzerland;

    International Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, Queensland 4001, Australia;

    Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland;

    Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland;

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