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Abstract:
Since the first reports about the "blue haze" phenomenon abobe forests it is known, that the emissions from plants, mostly isoprene, mono- and sequiterpenes, may have an impact on the formation of the secondary organic aerosols in the atmosphere. Some of the reaction products of the biogenic emissions with atmosphereic oxidantes (OH-radicals and ozone) have already been investigated. Unfortunately, due to the lack of synthetic standard compounds and the very similar structure of the products it is difficult to identify them.
Therefore, we have used the detection capabilities of mass spectrometry (MS) together with infrared spectroscopy (IR) and nuclear magnetic resonance spectroscopy (NMR) to understand the gas phase reactions of a model compound, in this case α-pinene. Because of the complexity of the analytical approach of the low volatile reaction products, a separation with liquid chromatography (LC) ws necessary. The interface systems will be described and first results presented.
