K_0-NAA for the Determination of Trace Elements in a Synthetic Material: a Collaborative Study

摘要

As part of an interlaboratory comparison in order to certify a synthetic material to beused for the validation of the proper implementation of k0-NAA a collaborative trial wasorganised. Based on this collaborative study RSD_r values (repeatability relative standarddeviation) ranging typically from 1 to 2% could be achieved, while RSD_Rvalues (reproducibilityrelative standard deviation) ranged typically from 2 to 5 %. These values were then comparedwith the Horwitz criterium leading to HORRAT values in most cases well below 1, although twoexceeding 1, depending on the element to be determined. It could be concluded that k_0-NAA isa very precise method, but that still some inconsistencies for certain elements do exist.