Determination of Radiochemical and Radionuclide Purity of a I-131 Preparation

被引：0

作者：

Tselishchev, I. V. ^{[1
]}

Savochkin, Yu. P. ^{[1
]}

Mel'nik, M. I. ^{[1
]}

Trepalina, T. F. ^{[1
]}

机构：

[1] Fed State Unitary Enterprise, Res Inst Atom Reactors, State Res Ctr Russian Federat, Dimitrovgrad, Ulyanovsk Oblas, Russia

来源：

RADIOCHEMISTRY | 2007年 / 49卷 / 02期

关键词：

87.58.Ji;

D O I：

10.1134/S1066362207020154

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The radiochemical purity of a I-131 preparation (the iodide fraction) was determined by ascending paper chromatography using a mixture of sodium iodide, sodium iodate, and sodium carbonate as a carrier and aqueous methanol as an eluent. The chromatogram was developed with a scanning beta-ray spectrometer. The radiochemical purity of I-131 determined by this procedure was 99.98%. The radionuclide purity of the I-131 preparation was measured on a gamma-ray spectrometer with an ultrapure Ge detector. The content of radionuclide impurities estimated from their detection limits in the I-131 preparation isolated from TeO2 in 3-4 days after its irradiation in a reactor was no more than 0.03%. The Se-75 content in the preparation aged for 6-7 months (which corresponds to a decrease in the I-131 activity by a factor of 10(6)-10(7) owing to decay) corresponds to 2 x 10(-6)% of the activity by the end of irradiation.

引用

页码：178 / 181

页数：4