| 摘要 |
The invention relates to analytical chemistry of rare earth elements (REE), in particular methods for quantitative determination of europium (Eu) in different stages of oxidation at joint presence of those. Method for quantitative determination of Еuand Еuis proposed at their joint presence in fluorides that includes preparation of sample for analysis, measurement of its spectral characteristic and following quantitative determination of each of components of mix, at that as spectral characteristic one registers spectra of luminescence of Еuand Еuin solid sample at its excitation by UV radiation ((λ=365nm), with determination of value of integral intensity of luminescence of Еuand Еuand ratio of those (integrEu/ integrЕu), sample is transformed to solution with determination of content of europium in sample, by that one quantity of each form, Еuand Еuis calculated. |
