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)
Funding Scheme
CSC - Cost-sharing contractsCoordinator
6812 Arnhem
Netherlands
Participants (18)
12205 Berlin
69390 Vernaison
56100 Pisa
6200 Aabenraa
3181 HA Rozenburg
9000 Gent
Verneuil En Halatte
50080 Zaragoza
1640 Linkebeek
1000 Bruxelles
1000 Bruxelles
1755 ZG Petten
45141 Essen
44649 Herne
20097 San Donato Milanese
33006 Oviedo
02150 Espoo