Objective
Primary Reference Materials (PRMs) provide the most accurate realisation of composition of substances possible. They play a crucial role in the traceability chain of chemical analysis. In the metrological hierarchy, these materials are located below the level of SI-units and fundamental constants. PRMs represent the "chemical" or substance unit mol. In contrast to physical units like kilogram or meter, there is no accepted traceability scheme for this unit.
This project intends to set up a traceability chain for natural-gas-like PRMs, by comparing very precise and traceable measurements of the physical properties density and gross calorific value to calculated values, derived from their specified composition. Traceability in natural gas analysis has a high economic impact, since the monetary value of natural gas is derived from its calorific value, which is calculated from composition analysis.
The objectives of the project are:
a) to demonstrate that the measured (by reference techniques) and predicted (by GC analysis and calculation following ISO 6976) values of density and gross calorific value of natural gas PRMs are concurrent within 0.04 % resp. 0.02 %;
b) to demonstrate, by an intercomparison, that the current practice in routine analysis of natural gas (according to ISO 6974) is traceable to these reference methods;
c) to draft a protocol, describing this method of validating natural-gas-like PRMs, for dissemination in the revision of ISO 14111.
The investigation of the laboratories abilities is close to its end. The documents, fixing the guidelines in preparation of the laboratory work, are completed. The study of physico-chemical interferences has started.
The ability of the participating laboratories to perform their measurements within the specified accuracy will be first critically reviewed. Physico-chemical interferences, like adsorption, slow reactions, etc., which may affect the composition integrity of the PRMs, will be quantified. The best way to handle high precision gas mixtures will be described.
In the second step, a series of PRMs will be produced and analysed by both reference techniques. Afterwards, routine gas chromatographic analysis methods will be compared to these fundamental techniques. Both PRMs and real natural gases will be involved in this study. The task will be performed by means of an interlaboratory comparison involving different European laboratories.
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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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
46284 Dorsten
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.