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Xiaolan Liu, Frédéric Poineau, Massoud Fattahi, Bernd Grambow, L. Vichot

Speciation of Tc(IV) in chloride solutions by capillary electrophoresis

A method for speciation of Tc(IV) species (TcCl₆^2- and TcCl₅(H₂O)^-) in chloride solutions, using capillary electrophoresis (CE) technique was developed. The proposed method has overcome the difficulties of unstable oxidation states analysis by shortening their travel time in the capillary. TcCl₆^2- and TcCl₅(H₂O)^- were thus separated without being hydrolyzed and polymerized, and their UV/Vis spectra were recorded. With a 1 M HCl/NaCl buffer solution (pH=1), the electrophoretic mobilities were determined as 5.47×10^-4 cm²/Vs for TcCl₆^2- and 2.13×10^-4 cm²/Vs for TcCl₅(H₂O)^- at 25 °C. The total analysis time for one run is 12 minutes.

Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Print ISSN: 0033-8230
Volume: 93, 05/2005
Pages: 305 - 309

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