Open AccessSUPERCRITICAL FLUID EXTRACTION OF MOLYBDENUM COMPLEXES AND ITS ISOTOPES WITH CARBON DIOXIDE
Author(s) -
Б.В. Борц,
Л. А. Булавин,
S.F. Skoromnaya,
В. И. Ткаченко
Publication year - 2020
Publication title -
problems of atomic science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 17
eISSN - 1562-6016
pISSN - 1682-9344
DOI - 10.46813/2020-129-027
Subject(s) - molybdenum , extraction (chemistry) , isotope , supercritical fluid extraction , supercritical carbon dioxide , supercritical fluid , carbon dioxide , analytical chemistry (journal) , chemistry , materials science , chromatography , inorganic chemistry , physics , organic chemistry , quantum mechanics
Separation of molybdenum complexes and its isotopes by supercritical uid extraction (SFE) with carbon dioxide was experimentally investigated. The type of modier, which provides increasing the eciency of the metal and its isotopes separation, was determined. Extraction of molybdenum isotope complexes was carried out in the updated SFE-U unit at a constant value of the initial pressure P = 20 MPa and constant temperatures of the upper (T1 = 35 ⁰C) and bottom (T2 = 45 ⁰C) anges of the extraction chamber. The exposure time of the extract and the level along the extraction chamber height, from which the eluent was sampled, were set in the experiments. It is shown, that at a certain sampling height and at certain exposure times, change in the natural content of Mo isotopes in the extracts takes place.