Objective
The objectives are to establish reliable kinetic and mechanistic data for key reactions controlling the aqueous chemistry of clouds and fog.
To a large measure, laboratory experiments have resolved the main features of the four principal processes which are thought to be responsible for the formation of acidity in cloud and fog water from sulphur oxidation. The present project and the former within the IVth CEC environmental R&D programme have contributed to this effort. It is timely to incorporate the reaction scheme which has been established into suitable computer models to clarify which processes are the most important in real atmospheric situations.
The laboratory work includes reactions responsible for the oxidation of sulphur species to sulphuric acid and the formation of organic acids.
Modern experimental techniques such as stopped-flow kinetics, laser flash photolysis, pulse radiolysis and advanced analytical techniques are employed to investigate:
the effects of transition metal ions on the oxidation of sulphur by strong oxidants such as hydrogen peroxide, ozone and hydrogen oxychloride.
catalysis of sulphur oxidation by transition metals, mainly by manganese and iron.
the occurrence of hydroxyl and oxy-sulphur radicals in atmospheric droplets during daylight hours.
the effects of transition metals upon free radicals.
The efforts of all participants will be combined to develop a list of key elementary reactions and the associated rate coefficients for application to atmospheric cloud and fog systems.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences chemical sciences organic chemistry organic acids
- natural sciences chemical sciences electrochemistry electrolysis
- natural sciences chemical sciences inorganic chemistry transition metals
- natural sciences chemical sciences nuclear chemistry radiation chemistry
- natural sciences physical sciences optics laser physics
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
55020 MAINZ
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.