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  • 1 University of Liège (Belgium)
  • | 2 Ecole Normale Supérieure Paris (France)
  • | 3 B.C.M.N. Geel (Belgium)
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Surface treatment on non-ferrous metals are proposed in order to minimize or determine quantitatively the interference of gaseous contamination. These proposals result from a large number of determinations of superficial contamination on several materials using microanalysis by nuclear reactions. This work is included in a larger program which aims the certification of standard materials in their oxygen, nitrogen and carbon contents.