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Content archived on 2024-04-16

Improvement of the determination of fluoride and chloride in coal and fly ash

Objective



Coal and fly ash are currently analysed to assess air and ground water pollution, to evaluate mass balance in coal production and as indirect control of emission (based on the differences in concentrations found in coal and fly ash respectively). Some areas suffer from a severe pollution by emission of fluoride into the atmosphere and its subsequent transport into the ground water. In the past materials such as incineration ash were used as fillers for concrete and road constructions. Nowadays the quantity produced is such that deposition is necessary which in turn becomes a problem because of the possible toxicity.
Chloride is responsible for burner corrosion and has to be determined to assess this risk. In some cases raw materials may be rejected if the chloride and fluoride contents are too high which is a source of economic concern. The control of the quality of measurements is therefore of paramount importance which underlines the need for RMs certified for their contents in Cl and F.

Status:

A series of intercomparisons has demonstrated that the certification of F and Cl in coal and fly ash was feasible. The certification will be concluded by the end of 1992 (fly ash and coal, candidate CRMs 038 and 460)

Fields of science (EuroSciVoc)

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Funding Scheme

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CSC - Cost-sharing contracts

Coordinator

KEMA N.V.
EU contribution
No data
Address
310,Utrechtseweg
6812 ARNHEM
Netherlands

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Total cost

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Participants (18)

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