| Autor: |
Tselishchev, I., Savochkin, Yu., Mel’nik, M., Trepalina, T. |
| Předmět: |
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| Zdroj: |
Radiochemistry; Mar2007, Vol. 49 Issue 2, p178-181, 4p |
| Abstrakt: |
The radiochemical purity of a 131I 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 β-ray spectrometer. The radiochemical purity of 131I determined by this procedure was 99.98%. The radionuclide purity of the 131I preparation was measured on a γ-ray spectrometer with an ultrapure Ge detector. The content of radionuclide impurities estimated from their detection limits in the 131I preparation isolated from TeO2 in 3–4 days after its irradiation in a reactor was no more than 0.03%. The 75Se content in the preparation aged for 6–7 months (which corresponds to a decrease in the 131I activity by a factor of 106–107 owing to decay) corresponds to 2 × 10−6% of the activity by the end of irradiation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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