Luminescence determination of europium in high-purity yttrium and gadolinium oxides

Authors
Biju, VM Reddy, MLP Rao, TP Kannan, G Mishra, AK Balasubramanian, N
Citation
Vm. Biju et al., Luminescence determination of europium in high-purity yttrium and gadolinium oxides, ANAL LETTER, 33(11), 2000, pp. 2271-2280
Citations number
19
Categorie Soggetti
Chemistry & Analysis","Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICAL LETTERS
ISSN journal
00032719 → ACNP
Volume
33
Issue
11
Year of publication
2000
Pages
2271 - 2280
Database
ISI
SICI code
0003-2719(2000)33:11<2271:LDOEIH>2.0.ZU;2-8
Abstract
A luminescence spectrometric method was developed for the determination of ultratrace amounts of europium (down to 1x10(-10) M) in high-purity yttrium and gadolinium oxides. This is based on the enhanced luminescence of europ ium thenoyltrifluoroacetone (TTA)-Tri-n-octyl phosphine oxide (TOPO)-Triton X-100 in the presence of terbium. The luminescence intensity is linear wit h europium concentration in the range 1x10(-9) to 1x10(-6) M under the reco mmended conditions. The optimized procedure is successfully utilized for th e determination of ultratrace amounts of europium in yttrium and gadolinum oxides.