The contribution of different analytical techniques to the results of a recent IAEA intercomparison (A-11) of the determination
of the inorganic constituents of a milk powder sample is discussed. In all, 43 laboratories from 24 countries reported results
on 40 elements, “recommended” concentrations for 14 elements were established. NAA was the most important of the 9 techniques
used in this run, it contributed 40% of all the results and all the results for 7 elements. Accuracy and precision of NAA
proved to be good compared to those of other methods.