Chotkowski M. Extraction of moderate oxidation state technetium species between 30 % tri-n-butyl phosphate and H
2SO
4/HNO
3.
J Radioanal Nucl Chem 2015;
307:457-462. [PMID:
26792952 PMCID:
PMC4705115 DOI:
10.1007/s10967-015-4122-5]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Indexed: 11/28/2022]
Abstract
The extraction of technetium species at oxidation state lower than +7 has been examined in sulfuric and sulfuric/nitric acid solutions using UV–Vis spectroscopy and optically transparent thin layer cell (RVC-OTTLE). Soluble Tc(III), TcO2+ and [Tc2O2]3+ species with absorption bands at 420–450, 400, and 502 nm, respectively, were detected as products of pertechnetates electroreduction. The distribution ratios of 99Tc with lower than +VII oxidation state ionic species between 4 M H2SO4 and 30 % TBP/kerosene were found and are significantly lower than for TcO4− in the same solution.
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