Cyanocobalamin solutions as potential dosimeters in low-dose food irradiations |
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| Institution: | 1. Institute of Metal Physics, Urals Division of Russian Academy of Sciences, 18, S. Kovalevskaya Str, 620990 Yekaterinburg, Russia;2. Helmholtz Zentrum München – German Research Centre for Environmental Health, D-85764 Neuherberg, Germany;3. Urals Research Center for Radiation Medicine, 68A, Vorovsky Str, 454076 Chelyabinsk, Russia;4. Ural Federal University, 19 Mira Str, 620002 Yekaterinburg, Russia;1. Biophysics Branch, Physics Department, Faculty of Sciences, Zagazig University, Egypt;2. Botany Department, Faculty of Sciences, Zagazig University, Egypt;1. Department of Radiological Life Sciences, Graduate School of Health Sciences, Hirosaki University, 66-1 Hon-cyo, Hirosaki 036-8564, Japan;2. Department of Radiation and Cellular Oncology, The University of Chicago, MC1105, 5841 S. Maryland Ave, Chicago, IL 60637-1463, USA;1. Radiotherapy Department, Nasser Institute, Cairo, Egypt;2. National Cancer Institute, Cairo University, Egypt;3. Biophysics Department, Faculty of Science, Cairo University, Egypt;1. Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany;2. C/Voluntarios Catalanes, 62, 28039 Madrid, Spain |
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| Abstract: | Potential of aqueous solutions of cyanocobalamin in gamma radiation dosimetry was investigated. The solutions are inexpensive, nontoxic and easy-to-prepare dosimeters, which could be useful for measuring gamma radiation doses in various applications, such as quarantine treatment of fruit or insect disinfestation of grains and pulses. The optical absorbance of cyanocobalamin solutions of the optimal concentration 0.08 mM decreases with increasing radiation dose. The reproducible dependence of the absorbance decrease on the dose can be described with a polynomial. Pre- and post-irradiation stability of the solution absorbance, as well as effects of the irradiation temperature and dose rate, were studied. The response is not significantly affected by storage of the irradiated dosimeters under ambient conditions for 20 days. The performance characteristics of this chemical dosimetry system suggest that it can be useful to measure doses in irradiations of food. |
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| Keywords: | Chemical dosimetry Cyanocobalamin Food irradiation |
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