Uncertainty budget for k(0)-NAA

The concepts of the Guide to the expression of Uncertainties in Measurement s for chemical measurements (GUM) and the recommendations of the Eurachcm d ocument "Quantifying Uncertainty in Analytical Methods" are applied to set up the uncertainty budget for k(0)-NAA. The "universlly applicable spreadsh eet technique", described by KRAGTEN, is applied to the k(0)-NAA basic equa tions for the computation of uncertainties. The variance components - indiv idual standard uncertainties - highlight the contribution and the importanc e of the different parameters to be taken into account.