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Analyses of lichens are performed routinely by a number of organisations to monitor the level of atmospheric contamination by toxic elements, for example, heavy metals. To improve and control the quality of such determinations, the Community Bureau of Reference (BCR) organised an interlaboratory exercise which allowed the detection and removal of most of the pitfalls observed in the determination of a series of 17 elements, namely Al, As, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, Ni, Pb and Zn. The results obtained in this intercomparison indicate that a certification campaign could possibly be undertaken with some selected laboratories.

Additional information

Authors: QUEVAUVILLER P, European Commission, Bruxelles (BE);VAN RENTERGHEM D, European Commission, Bruxelles (BE);GRIEPINK B, European Commission, Bruxelles (BE);MUNTAU H, JRC Ispra (IT)
Bibliographic Reference: Article: International Journal of Environmental Analytical Chemistry, Vol. 53 (1993) pp. 233-242
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