FIELD: analytical methods.
SUBSTANCE: method involves mixing uranium compound with all-purpose active additive, in particular urea. More specifically, following proportions of components are used: 45-49% of salt residue obtained after evaporation of uranium hexafluoride, 45-49% alumina, and 2-10% urea. Urea is added in the step wherein sample is being mixed with alumina powder.
EFFECT: increased analytic sensitivity and lowered boron detection threshold.
2 dwg, 1 tbl
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