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Accession number;01A0231196
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| Title;Analytical method for the determination of radionuclides in low level radioactive waste. Determination of Technetium-99. |
| Author;
KANEKO KENJI
(Nihon Bunseki Senta)
MORIMOTO TAKAO
(Nihon Bunseki Senta)
TSUBUKU TADAHIRO
(Nihon Bunseki Senta)
BAMBA SHIGERU
(Nihon Bunseki Senta)
NAKASHIMA MIKIO
(Japan At. Energy Res. Inst., Tokai Res. Establ.)
HIRAYAMA KATSUYOSHI
(Japan At. Energy Res. Inst., Tokai Res. Establ.)
HIGUCHI HIDEO
(Nihon Bunseki Senta)
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Journal Title;Abstracts of Papers. Symposium on Radiochemistry
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Journal Code:F0139B
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ISSN:1345-2762
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VOL.44th;NO.;PAGE.39(2000)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;A method has been developed for the separation and purification of 99Tc in low level radioactive waste. Tc(IV), reduced by potassium pyrosulfite, was coprecipitated with iron(II) hydroxide. Precipitate was dissolved into hydrochrolic acid. Tc(IV) oxidized to Tc(VII) by hydrogen peroxide. Tc was purified by extraction chromatographic resin. 99Tc was determined by gas-flow low background beta counter. The decontamination factor of 60Co and 137Cs was more than 105. The minimum detectable level of 99Tc was 0.2mBq/g, which was estimated from 10g sample, 1200m counting time, 60% recovery and counting background of 0.3 cpm conditions. 99Tc concentration in low level radioactive waste such as cement and asphalt solidified waste, ash and rubber gloves were observed ranging from 0.014 to 270Bq/g as a results of this method. (author abst.) |
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