| Abstract: | ABSTRACT A luminescence spectrometric method was developed for the determination of ultratrace amounts of europium (down to 1×10?10 M) in high-purity yttrium and gadolinium oxides. This is based on the enhanced luminescence of europium thenoyltrifluoroacetone (TTA)-Tri-n-octyl phosphine oxide (TOPO)-Triton X-100 in the presence of terbium. The luminescence intensity is linear with europium concentration in the range 1×10?9 to 1×10?6 M under the recommended conditions. The optimized procedure is successfully utilized for the determination of ultratrace amounts of europium in yttrium and gadolinum oxides. |
