Boron Isotope Separation by Ion Exchange Chromatography Using Weakly Basic Anion Exchange Resin
作者:
S. Itoh,
M. Aida,
M. Okamoto,
M. Nomura,
Y. Fujii,
M. Maeda,
期刊:
Isotopenpraxis Isotopes in Environmental and Health Studies
(Taylor Available online 1985)
卷期:
Volume 21,
issue 6
页码: 204-208
ISSN:0021-1915
年代: 1985
DOI:10.1080/10256018508623489
出版商: Taylor & Francis Group
关键词: boron 10;boron isotopes;chromatography;ion exchange;isotope separation;mass spectroscopy
数据来源: Taylor
摘要:
Influences of operating temperatures and concentrations of feed boric acid solutions were examined on the above titled process over the ranges of 25–70°C and 0.1–1.6 mol/dm3(M), respectively. The ideal displacement chromatography with a very sharp-cut boundary of a boric acid adsorption band was realized at higher temperatures and lower boric acid concentrations within the experimental conditions. The isotope separation coefficient ɛ was found to decrease with increases in either temperature or the boric acid concentration. The observed values of ɛ at 25°C were 0.013, 0.012 and 0.011 depending on the feed boric acid concentrations of 0.1 M, 0.4 M and 0.8 M, respectively. The ɛ's at 70°C were determined as 0.0097 (0.1 M), 0.0086 (0.4 M), 0.0083 (0.8 M) and 0.0073 (1.6 M). The operational condition of temperature 40°C and 0.4 M of the boric acid concentration was proposed as the optimum for the production of enriched10B isotope by using the present process.
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