Kinetics of the formation of precipitates and the physicochemical properties of technetium-99 and rhenium sulfides according to small-angle X-ray scattering and ultramicrocentrifugation data


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The interaction of technetium and rhenium with sulfides in aqueous solutions was studied by small-angle X-ray scattering and ultramicrocentrifugation. It was shown that, although the stoichiometry of technetium sulfide corresponds to the formula Tc2S7–x, the oxidation state of technetium in it is +4 and the excess sulfur is bound into a disulfide group so that its formula can correctly be written as [Tc33-S)(µ2-S2)3(S2)(3n–n)/n)]n. The determination of the solubility of technetium sulfide is complicated by its tendency to form colloids, which was the reason why the above methods were chosen to find features of its formation and describe its solubility in solutions.

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K. German

Frumkin Institute of Physical Chemistry and Electrochemistry; REAVIZ Medical University, Moscow Branch

编辑信件的主要联系方式.
Email: guerman_k@mail.ru
俄罗斯联邦, Moscow, 199071; Moscow, 107564

Ya. Obruchnikova

Frumkin Institute of Physical Chemistry and Electrochemistry; REAVIZ Medical University, Moscow Branch

Email: guerman_k@mail.ru
俄罗斯联邦, Moscow, 199071; Moscow, 107564

A. Safonov

Frumkin Institute of Physical Chemistry and Electrochemistry; REAVIZ Medical University, Moscow Branch

Email: guerman_k@mail.ru
俄罗斯联邦, Moscow, 199071; Moscow, 107564

V. Tregubova

Frumkin Institute of Physical Chemistry and Electrochemistry; REAVIZ Medical University, Moscow Branch

Email: guerman_k@mail.ru
俄罗斯联邦, Moscow, 199071; Moscow, 107564

A. Afanas’ev

Frumkin Institute of Physical Chemistry and Electrochemistry; REAVIZ Medical University, Moscow Branch

Email: guerman_k@mail.ru
俄罗斯联邦, Moscow, 199071; Moscow, 107564

A. Kopytin

Kurnakov Institute of General and Inorganic Chemistry

Email: guerman_k@mail.ru
俄罗斯联邦, Moscow, 119991

O. Kryzhovets

REAVIZ Medical University, Moscow Branch; Kurnakov Institute of General and Inorganic Chemistry

Email: guerman_k@mail.ru
俄罗斯联邦, Moscow, 107564; Moscow, 119991

F. Poineau

University of Nevada, Las Vegas; SUBATECH

Email: guerman_k@mail.ru
美国, Las Vegas, NV, 89154; Nantes cedex, 44307

E. Abkhalimov

Frumkin Institute of Physical Chemistry and Electrochemistry

Email: guerman_k@mail.ru
俄罗斯联邦, Moscow, 199071

A. Shiryaev

Frumkin Institute of Physical Chemistry and Electrochemistry

Email: guerman_k@mail.ru
俄罗斯联邦, Moscow, 199071

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