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  • 1 Gent University Laboratory of Analytical Chemistry, Institute for Nuclear Sciences (INW) Proeftuinstraat 86 B-9000 Gent Belgium
  • 2 Gent University, Institut voor Nucleaire Wetenschappen Laboratory of Analytical Chemistry, Institute of Nuclear Science (INW) Proeftuinstraat 86 B-9000 Gent Belgium
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Abstract  

Since 1996, two new cases were detected in our laboratory for which the elemental concentrations derived from k 0 neutron activation analysis seem questionable. These cases concern the inconsistencies observed (1) in the concentration of Ca obtained via 47Ca and 47Sc, and (2) in the concentration of Yb obtained via the 228.5 and 396.3 keV lines of 175Yb. A recommendation is made to re-evaluate the corresponding k 0-values or true-coincidence correction factors.