PAH SOURCE FINGERPRINTS FOR COKE OVENS, DIESEL AND GASOLINE-ENGINES, HIGHWAY TUNNELS, AND WOOD COMBUSTION EMISSIONS
PAH SOURCE FINGERPRINTS FOR COKE OVENS, DIESEL AND GASOLINE-ENGINES, HIGHWAY TUNNELS, AND WOOD COMBUSTION EMISSIONS
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DOI：
10.1016/1352-2310(94)00275-p
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发表时间：
1995-03-01
影响因子：
5
通讯作者：
HOLSEN, TM
中科院分区：
文献类型：
--
作者：
KHALILI, NR;SCHEFF, PA;HOLSEN, TM
为了评价芝加哥大都市区多环芳烃（PAH）主要来源的化学组成（源指纹），在1990-1992年期间进行了一项主要PAH源的研究。在这项研究中，一个改进的大容量采样方法（PS-I采样器）收集空气中的多环芳烃在颗粒和气相。使用配备有火焰离子化和质谱检测器（GC/FID和GC/MS）的Hewlett Packard 5890气相色谱仪来分析样品。抽样的来源是：焦炉，公路车辆，重型柴油发动机，汽油发动机和木材燃烧。结果表明，焦炉、柴油机、公路隧道、汽油机和木材燃烧样品中，二环和三环多环芳烃分别占20种多环芳烃总浓度的98%、76%、92%、73%和80%。茚并（1，2，3-cd）芘和苯并（ghi）芘等六环多环芳烃大多低于本研究的检出限，仅在公路隧道、柴油和汽油发动机样品中检出。源指纹通过平均单个多环芳烃浓度与分类污染物的总浓度的比率获得，包括：（a）萘和晕苯之间的保留时间的多环芳烃的总测量质量，（B）在本研究中测量的20种多环芳烃的质量，（c）总挥发性有机化合物，和（d）总PM10。由于上述类别污染物的浓度在个别样品和不同来源中不同，因此获得的每种类别污染物的化学成分模式也不同。源指纹已被开发用于化学质量平衡受体建模计算。
To evaluate the chemical composition (source fingerprint) of the major sources of polyaromatic hydrocarbons (PAHs) in the Chicago metropolitan area, a study of major PAH sources was conducted during 1990-1992. In this study, a modified high-volume sampling method (PS-I sampler) was employed to collect airborne PAHs in both the particulate and gas phases. Hewlett Packard 5890 gas chromatographs equipped with the flame ionization and mass spectrometer detectors (GC/FID and GC/MS) were used to analyze the samples. The sources sampled were: coke ovens, highway vehicles, heavy-duty diesel engines, gasoline engines and wood combustion. Results of this study showed that two and three ring PAHs were responsible for 98, 76, 92, 73 and 80% of the total concentration of measured 20 PAHs for coke ovens, diesel engines, highway tunnels, gasoline engines and wood combustion samples, respectively. Six ring PAHs such as indeno(1,2,3-cd)pyrene and benzo(ghi)perylene were mostly below the detection limit of this study and only detected in the highway tunnel, diesel and gasoline engine samples. The source fingerprints were obtained by averaging the ratios of individual PAH concentrations to the total concentration of categorical pollutants including: (a) total measured mass of PAHs with retention times between naphthalene and coronene, (b) the mass of the 20 PAHs measured in this study, (c) total VOCs, and (d) total PM10. Since concentrations of the above categorical pollutants were different for individual samples and different sources, the chemical composition patterns obtained for each categorical pollutant were different. The source fingerprints have been developed for use in chemical mass balance receptor modeling calculations.