The separation of arsenic-77 in a carrier-free state from the parent nuclide germanium-77 by a thin-layer chromatographic method |
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Authors: | Y Maki Y Murakami |
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Institution: | (1) Industrial Research Institute of Kanagawa Prefecture, Showa-cho, Kanazawa-ku, Yokohama-shi, (Japan);(2) Department of Chemistry, Faculty of Science, Tokyo Metropolitan University, Setagaya-ku, Tokyo, (Japan) |
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Abstract: | 77As(III) and77As(V) were separated from neutron-irradiated GeO2 by a thin-layer chromatographic method, in which silica gel was used as adsorbent and a 2∶1 mixture of methanol and 5N HCl
as developer. The Rf values of these nuclides were as follows: 0.00 for77Ge, 0.50 for77As(III) and 0.94 for77As(V). The influence of As(III) carrier added before the separation was investigated on the oxidation state of77As recoiled from the parent nuclide. The radiochemical purity of77As thus separated was more than 99.9% and the activity due to77As could easily be eluted with water from the adsorbent, with 93% recovery. |
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