Objective
THE PRESENT PROPOSAL AIMS TO ENLARGE THE ACTUAL KNOWLEDGE ON THE ECO-PHYSIOLOGY OF TRANSURANIUM ELEMENTS. SPECIFIC ATTENTION IS CENTERED AROUND DATA NEEDED FOR MODELLING PURPOSES. THEREFORE A STUDY ON TRANSURANIC (AMERICIUM AND CURIUM) ACCUMULATION AND TURNOVER IN FRESHWATER ORGANISMS UNDER DIFFERENT ENVIRONMENTAL AND PHYSIOLOGICAL CONDITIONS IS PROPOSED. THIS RESEARCH WILL BE CARRIED OUT IN CLOSE COOPERATION WITH SIMILAR RESEARCH ON ESTUARINE AND MARINE ORGANISMS. COOPERATION THAT SUCCESSFULLY STARTED IN THE FOREGOING CEC CONTRACT.
The claim that microbial activity can profoundly change the behaviour of americium-241 and curium-244 in sediments and water cannot be demonstrated for either of the 2 isotopes in coarse sandy sediments. For sediments with a higher silt, and particularly a higher clay content, however, larger differences in adsorption are obtained, up to 6 times more in the nonsterile than in sterile sediments. Bioavailability is not seriously influenced by microbial activity. Gamarus pulex fixes quite similar quantities of both transuranics under sterile and nonsterile conditions. The concentration factors of americium-241 were in these experiments about 1 order of magnitude higher than for curium-244. The data demonstrate how experimental values are to be used with caution in modelling and risk assessment studies.
1. BIOLOGICAL AVAILABILITY OF TRANSURANICS IN AQUATIC ECOSYSTEMS
2. SPECIATION OF TRANSURANICS IN AQUATIC ENVIRONMENTS
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 biological sciences ecology ecosystems
- natural sciences earth and related environmental sciences hydrology limnology
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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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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
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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
1160 BRUSSELS
Belgium
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.