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Content archived on 2024-05-14

Carbonyls in tropospheric oxidation mechanisms

Objective



The main objective of CATOME is to investigate C5-C10 carbonyl compounds in different air masses in Europe to understand mechanisms of tropospheric oxidation.
To meet the main objective of CATOME the proposed work content is consisting a integrated package comprising following tasks:
1. Identification of the structure and presence of C5-C10carbonyl compounds in urban, suburban and forest air masses from the Mediterranean basin.
2. Synthesis of the identified compounds (C5-C10 carbonyl compounds). These compounds are not commercially available and they are needed to determine photochemical reaction constants, and to develop further measurement methods.
3. Improvement of the routine methods for determination of carbonyl compounds in air, with emphasis on C5-C10 carbonyls.
4. Determination of photochemical reaction constants of C5-C10 carbonyl compounds.
5. Field experiments in order to assess the level of C5-C10 carbonyl compounds in urban, suburban, and forest air from the Mediterranean basin.
6. Interpretation of the measured carbonyl compounds using computer-based air quality models? with emphasis on a mechanistic approach in order to evaluate sources and chemical reactions.
7. To explore the impact of C5-C10 carbonyl compounds on the tropospheric oxidation capacity.
The aim of the work presented in this proposal is to develop tools necessary to extend our knowledge of tropospheric carbonyl chemistry and to integrate these compounds in our understanding of photochemical oxidation processes in the troposphere. This project will make available measurement data of concentrations of longer chain carbonyl compounds - lacking at present time along with a qualitative and quantitative interpretation of their impact on photochemical oxidation mechanisms in the troposphere. This improvement of knowledge is essential in developing reliable tools and strategies for controlling anthropogenic emissions of organic pollutants. This proposal is thus relevant to the declared policy of the EC on the environment.

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Coordinator

NORWEGIAN INSTITUTE FOR AIR RESEARCH
EU contribution
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Address
Instituttveien 18
2027 KJELLER
Norway

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Total cost

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Participants (4)

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