Potential use of an irradiated natural tin target for preparation of a mixed sealed source based on 12-tungstocerate gel matrix for radiometric calibration purposes

• Published in: Radiochemistry (New York, N.Y.) Vol. 55; no. 2; pp. 224 - 228
• Main Authors: El-Amir, M. A., El-Said, H., Ramadan, H. E.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-03-2013
• Subjects: Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Nuclear Chemistry; sealed radiation sources; gel matrix; tin isotopes; sorption; radiometric calibration; antimony isotopes
• ISSN: 1066-3622; 1608-3288
• DOI: 10.1134/S1066362213020148

Irradiated natural tin target and 12-tungstocerate gel matrix were used for preparing a
113
Sn and
124,125
Sb sealed source. The distribution coefficients of
113
Sn/
113
m
In and
124,125
Sb ions on 12-tungstocerate gel matrix were determined in relation to HCl concentration. 12-Tungstocerate gel matrix was loaded with
113
Sn/
113
m
In and
124,125
Sb by equilibrating an irradiated Sn(IV) solution with 0.5 g of the matrix at pH 1 (HCl) for 24 h at 25 ± 1°C. A mixed sealed source of
113
Sn/
113
m
In and
124,125
Sb was prepared by packing 105 mg of the loaded matrix in the cylindrical cavity of a Chinese artelone capsule. The activity of the source was in the millicurie range. The source successfully passed quality control tests.