Fu Hai-Huan, Tian Na, Shang Hui-Bin, Zhang Bin, Ye Su-Fen, Chen Xiao-Qiu, Wu Shui-Ping
Huan Jing Ke Xue. 2014 Jan;35(1):46-52.
Particles from cooking lampblack, biomass and plastics burning smoke, gasoline vehicular exhausts and gasoline generator exhausts were prepared in a resuspension test chamber and collected using a cascade MOUDI impactor. A total of 18 polycyclic aromatic hydrocarbons (PAHs) associated with particles were analyzed by GC-MS. The results showed that there were two peaks in the range of 0.44-1.0 microm and 2.5-10 microm for cooking lampblack, and only one peak in the range of 0.44-1.0 microm for straw and wood burning smoke. But there were no clear peak for plastics burning smoke. The peak for gasoline vehicular exhausts was found in the range of 2.5-10 microm due to the influence of water vapor associated with particles, while the particles from gasoline generator exhausts were mainly in the range of < or = 2.5 microm (accounting for 93% of the total mass). The peak in 2.5-10 microm was clear for cooking lampblack and gasoline vehicular exhausts. The peak in the range of 0.44-1.0 microm became more and more apparent with the increase of PAHs molecular weight. The fraction of PAH on particles less than 1.0 microm to that on the total particles increased along with PAH's molecular weight. Phenanthrene was the dominant compound for cooking lampblack and combustion smoke, while gasoline vehicular exhausts and generator exhausts were characterized with significantly high levels of naphthalene and benzo[g, h, i] perylene, respectively. The distribution of source characteristic ratios indicated that PAHs from cooking lampblack and biomass burning were close and they were different from those of vehicular exhausts and generator exhausts.
在重悬浮试验箱中制备了来自烹饪油烟、生物质和塑料燃烧烟雾、汽油车辆尾气及汽油发电机尾气的颗粒物，并用多级MOUDI冲击器进行收集。采用气相色谱 - 质谱联用仪分析了与颗粒物相关的总共18种多环芳烃（PAHs）。结果表明，烹饪油烟在0.44 - 1.0微米和2.5 - 10微米范围内有两个峰值，秸秆和木材燃烧烟雾在0.44 - 1.0微米范围内只有一个峰值，而塑料燃烧烟雾没有明显峰值。由于与颗粒物相关的水蒸气的影响，汽油车辆尾气的峰值出现在2.5 - 10微米范围内，而汽油发电机尾气的颗粒物主要在≤2.5微米范围内（占总质量的93%）。烹饪油烟和汽油车辆尾气在2.5 - 10微米处的峰值明显。随着PAHs分子量的增加，0.44 - 1.0微米范围内的峰值越来越明显。小于1.0微米颗粒物上PAH的含量占总颗粒物上PAH含量的比例随PAH分子量的增加而增大。菲是烹饪油烟和燃烧烟雾中的主要化合物，而汽油车辆尾气和发电机尾气分别以萘和苯并[g, h, i]苝的含量显著高为特征。源特征比值的分布表明，烹饪油烟和生物质燃烧产生的PAHs相近，与车辆尾气和发电机尾气产生的PAHs不同。
