Objective
The eco-toxicity and mobility of metals in the environment depends strongly on their specific chemical forms or types of binding rather than the total element contents. Consequently these have to be determined in order to assess the toxic effects and geochemical pathways. The determination of specific chemical species or binding forms is difficult and often hardly possible. Therefore, in practice determinations of broader "operationally or functionally defined" forms or phases can be a reasonable compromise; e.g. "bioavailable" forms of trace elements can give sufficient information to arrive at a sound environmental policy. Single and sequential extraction schemes have been designed in the 80's in order to assess the different retention/release of metals in soil and sediment samples. However, the lack of uniformity in the different procedures used did not allow the results to be compared worldwide nor the procedures to be validated e.g. with CRMs.
The project aimed to harmonize measurements for extractable trace metal contents in soil, following a stepwise approach (through interlaboratory studies) of which the final aim was to certify soil reference materials for their extractable trace element contents.
The interlaboratory studies enabled to test and establish common single and sequential extraction procedures which were widely accepted by European expert laboratories; these schemes (acetic acid, EDTA and three-step sequential extractions) are now discussed in ISO working groups for their possible adoption as standards. The above mentioned materials were successfully certified, namely for their acetic acid- and EDTA-extractable trace element contents (CRMs 483 & 484 - Report EUR 17127 EN, 1997), the extractable trace element contents following the three-step sequential extraction procedure (CRM 601 - Report EUR 17554 EN, 1997), and their EDTA- and DTPA-extractable trace element contents (CRM 600 - Report EUR 17555 EN, 1997).
The project consisted in interlaboratory studies, using sediment and soil reference materials, to tests selected single (for soil) and sequential (for sediment) extraction procedures. This first phase was designed to evaluate the state-of-the-art of this type of analysis with a group of ca. 20 laboratories representing European expert institutes and to possibly amend the extraction schemes proposed. The interlaboratory studies were followed by the preparation of three large batches of candidate reference materials of sewage sludge amended soils (CRMs 483 and 484), sediment (CRM 601) and sewage sludge amended calcareous soil (CRM 600) and their subsequent certification for their extractable trace element contents.
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.
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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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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.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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.
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
08007 Barcelona
Spain
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.