Dose response of xylitol and sorbitol for EPR retrospective dosimetry with applications to chewing gum.
The purpose of this investigation was to study the radiation-induced electron paramagnetic resonance signal in sweeteners xylitol and sorbitol for use in retrospective dosimetry. For both sweeteners and chewing gum, the signal changed at an interval of 1-84 d after irradiation with minimal changes after 4-8 d. A dependence on storage conditions was noticed and the exposure of the samples to light and humidity was therefore minimised. Both the xylitol and sorbitol signals showed linearity with dose in the measured dose interval, 0-20 Gy. The dose-response measurements for the chewing gum resulted in a decision threshold of 0.38 Gy and a detection limit of 0.78 Gy. A blind test illustrated the possibility of using chewing gums as a retrospective dosemeter with an uncertainty in the dose determination of 0.17 Gy (1 SD).
Radiation Physics, Department of Medical and Health Sciences, Linköping University, Linköping SE 581 85, Sweden. axel.israelsson@liu.se
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Israelsson
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Gustafsson
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Lund
D002638:Chewing Gum / Q000032:analysis* / Q000528:radiation effects; D004307:Dose-Response Relationship, Radiation; D004578:Electron Spin Resonance Spectroscopy / Q000295:instrumentation / Q000379:methods / Q000592:standards*; D006801:Humans; D010315:Particle Accelerators; D019047:Phantoms, Imaging; D018788:Radioactive Hazard Release; D011874:Radiometry / Q000295:instrumentation / Q000379:methods / Q000592:standards*; D013012:Sorbitol / Q000528:radiation effects*; D013549:Sweetening Agents / Q000528:radiation effects; D014993:Xylitol / Q000528:radiation effects*
D002638:Chewing Gum; D013549:Sweetening Agents; D013012:Sorbitol; D014993:Xylitol