статья в журнале

En

Journal of Radioanalytical and Nuclear Chemistry

ISSN:0236-5731
eSSN:1588-2780

2020

Shibetskaya, Y.G.¹

Tovarchii, Y.Y.¹

Egorin, A.M.²

Tokar, E.A.²

Tananaev, I.G.¹

10.1007/s10967-019-06940-9

The paper presents the results of a study of the physical, chemical and sorption properties of a fibrous sorbent-polyacrylonitrile modified with a mixed phase of manganese oxide, in relation to the natural isotopes of radium in seawater. The paper contains methodical guidelines for synthesizing the material the most efficiency and hydromechanical stability. It is described using structural (diffractometry, IR spectroscopy) and physicochemical methods of analysis (thermal analysis, gas adsorption). The possibility of using this sorbent for the concentration of cosmogenic (Be-7) and natural (Ra-226, Ra-228, Th-234) radionuclides from seawater samples under field conditions was studied. The results of determination of the concentration of dissolved Ra-226, Ra-228, Th-234 in seawater samples using this sorbent were compared with the published data. Evidence of sorption Be-7 from seawater samples using this fiber was obtained by gamma-spectrometric analysis.

RADIOECOLOGY, MARINE RADIOCHEMISTRY, MNO2-FIBER, SORPTION, BE-7, RA-226, RA-228, TH-234

2020-04-08 11:28:34