Quality evaluation of the k 0 -standardized neutron activation analysis (k 0 -NAA) at Dalat research reactor (DRR) has been implemented by analyzing the SMELS, a synthetic multi-element standard material as well as the certified reference materials for purposes of validation and verification of the method. The results revealed that the k 0 -NAA established at DRR has met the requirements of multi-element analysis for the intended applications with about 42 elements: Al, As, and Zr in matrices of environment, geology and biology among others. Evaluation criteria for the laboratory quality used in this work are the statistical analysis parameters namely: u-scores, laboratory result/certified value ratios and relative biases as well as the control charts those are shown in the paper.
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