FIELD: analytical chemistry.
SUBSTANCE: invention relates to analytical chemistry, in particular to methods for the luminescent determination of terbium. Terbium is converted into a luminescent complex compound with an organic reagent (R) - ofloxacin. Ratio Tb:R=1:2 at pH=3.0±0.1. The lower detection limit for Tb with ofloxacin is 7.5⋅10–9 g/ml Tb.
EFFECT: high selectivity, accuracy and reproducibility, as well as the ability to simultaneously determine Tb, Dy, Sm, Eu in lanthanide oxides.
1 cl, 4 dwg, 2 tbl
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