Secondary Organic Aerosols with PM 2.5 or PM 10 Sampler
Secondary Organic Aerosols are collected with the PM 10 (PM 2.5 since 20090302) Sampler (Leckel sequential sampler 40/70) for Nelida Gonzalez Cantu (nelida.gonzalez(at)itm.su.se) from the University of Stockholm-ITM. Collection started in the beginning of the june 2008.
Quartz filters of 47mm are used in sampling and total sampling will be 60 filters- 48h sampling each
Short Presentation of the project (Nelida Conzalez Cantu):
Previously it has been reported that biogenic hydrocarbons undergo atmospheric oxidation becoming a significant source of global aerosol. This project is focused on the study of secondary organic aerosols. There is a lack of knowledge on their sources, their distribution, and furthermore on their transformation. Since the identification of secondary organic aerosols has been possible mainly through smog chamber experiments, there is little evidence that can support whether the identified products are indeed secondary as controlled conditions differ from real atmospheric environments. For that reason this project intends to develop a technique that can identify unique tracers on SOA. Samples will be obtained from boreal forests (Aspvreten, Sweden and Hyytiälä, Finland) and tropical rain forest (Manaus, Brazil). Different extraction and analytical separation methods will be applied to determine tracers.
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