Rissanen Taija, Hyötyläinen Tuulia, Kallio Minna, Kronholm Juhani, Kulmala Markku, Riekkola Marja-Liisa
Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland.
Chemosphere. 2006 Aug;64(7):1185-95. doi: 10.1016/j.chemosphere.2005.11.079. Epub 2006 Jan 24.
Atmospheric aerosol particles were collected in a Finnish Scots pine forest as part of a European Union project. Sampling was done in March-April 2003 with a high-volume sampler. Dynamic ultrasonic-assisted solvent extraction and gas chromatography-mass spectrometry (GC-MS) were applied to the analysis of aerosol samples for analytes such as n-alkanes, polycyclic aromatic hydrocarbons (PAH), oxidized polycyclic aromatic hydrocarbons (oxy-PAHs), sesquiterpenes (SQT) and oxidized sesquiterpenes (oxy-SQT). The highest concentrations were found for the n-alkanes, which were present in a wide range (C11-C32) indicating both biogenic and anthropogenic sources. PAH compounds were found in every sample while oxy-PAH compounds were present in low concentrations in a few samples. A few oxidized monoterpenes, most notably (-)-verbenone and pinonaldehyde, were found in several samples in concentrations clearly exceeding the PAH concentrations. The effect of temperature could be seen in most samples, where the concentrations of n-alkanes declined with decreasing temperatures. Particle formation events were accompanied by higher concentrations of heavy n-alkanes, verbenone and pinonaldehyde.
作为欧盟一个项目的一部分，在芬兰的一片苏格兰松树林中采集了大气气溶胶颗粒。2003年3月至4月间，使用大容量采样器进行了采样。采用动态超声辅助溶剂萃取和气相色谱 - 质谱联用（GC - MS）技术，对气溶胶样品中的正构烷烃、多环芳烃（PAH）、氧化多环芳烃（oxy - PAH）、倍半萜烯（SQT）和氧化倍半萜烯（oxy - SQT）等分析物进行分析。正构烷烃的浓度最高，其碳链范围较广（C11 - C32），表明存在生物源和人为源。每个样品中都发现了PAH化合物，而少数样品中oxy - PAH化合物的浓度较低。在几个样品中发现了一些氧化单萜，最显著的是（-） - 马鞭草烯酮和蒎烷醛，其浓度明显超过了PAH的浓度。在大多数样品中都能看到温度的影响，其中正构烷烃的浓度随温度降低而下降。颗粒物形成事件伴随着较高浓度的重质正构烷烃、马鞭草烯酮和蒎烷醛。
