中文关键词生物质燃料工业锅炉多环芳烃排放成分谱 英文关键词biomass fuelindustry boilPAHsdischargesource profile

作者	单位	E-mail
林玉君	广东省环境监测中心, 广州 510308	linyujun02@126.com
白莉	广东省环境监测中心, 广州 510308
王焕香	广东省环境监测中心, 广州 510308
肖文	广东省环境监测中心, 广州 510308	13640210298@139.com
刘军	广东省环境监测中心, 广州 510308
向运荣	广东省环境监测中心, 广州 510308
张春林	暨南大学环境与气候研究院, 广州 511443

中文摘要 选择13个不同类型的工业生物锅炉，利用气相色谱质谱联用技术，对其排放的15种PAHs进行研究.结果显示，Σ₁₅PAHs排放量为0.02~27.8 g·h^-1，排放浓度为0.77~3173 μg·m^-3，各锅炉之间的排放量与浓度水平差别较大，最大排放量出现在PAHs含量与烟气流量均相对较高的第4号锅炉样品中，最大排放浓度值出现在第13号锅炉样品中.气相的PAHs是主要贡献源，其占比为45.9%~100%，颗粒相中的含量相对较低.组成以苊烯、菲、荧蒽、芘等低中环PAHs为主，各个生物质锅炉组成谱轮廓相近，总体浓度水平C_3，4环 > C_5，6环.生物质燃烧源诊断参数[荧蒽/（荧蒽+芘）]除了第4号锅炉的气相样品为0.4外，其余均大于0.5.O₂与两相中的苊烯、苊、菲、蒽等有明显的正相关性，CO与苊及毒性相对较大的茚并[1，2，3-cd]芘、苯并[g，h，i]苝有明显相关性. 英文摘要 This research selected 13 types of industrial biomass boilers and used GC-MS technology to investigate the characteristics of 15 polycyclic aromatic hydrocarbons (PAHs) emitted from the boils. The results show that the total emissions of the 15 PAHs was 0.02-27.8 g ·h^-1, and the concentration was 0.77-3173 μg ·m^-3. There was a large different in the Σ₁₅ PAHs concentration and emissions for each boiler. The maximum concentration appeared in the No.13 boiler sample, and the maximum emissions appeared in the No.4 boiler sample; these have relatively high concentrations of PAHs and large stack gas velocities. PAHs were found to be dominant in the gas phase, with a proportion of 45.9%~100%. Acenaphthylene, phenanthrene, fluoranthene, and pyrene were the main PAHs. The spectral distribution profiles of the 15 PAHs were similar, and the general concentrations were C_{3,4 rings} > C_{5,6 rings}. Diagnostic ratios the fluoranthene to fluoranthene plus pyrene (Flu/(Flu+Pyr)) from biomass combustion were greater than 0.5, except for the No.4 sample, which was 0.4. There were obvious positive interrelationships between O₂ and acenaphthylene, acenaphthene, phenanthrene, and anthracene. In addition, there were obvious interrelationships between CO and indeno[1,2,3-cd]pyrene, benzo (g,h,i) perylene, and acenaphthene.

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