INTERCOMPARISON OF TECHNIQUES AVAILABLE AT INETI IN THE ANALYSIS OF 2IAEA CANDIDATE RESEARCH MATERIALS

Under contract with the IAEA, the epiphytic lichen Evernia prunastri w as collected to prepare a multielement lichen reference material for q uality assurance of environmental studies. An intercomparison run on t race and minor elements in this candidate research material (IAEA-336) was organized in which six analytical groups of the National Institut e of Engineering and Industrial Technology (INETI) took part. INAA, PI XE, XRF, AAS, and ICP-ES were applied. The results obtained by differe nt methods are compared, and their complementarity is discussed. As a quality control, the IAEA cabbage research material (IAEA-359) was ana lyzed. The results agree quite well with the estimated values given by the IAEA.