Abstract
Ninhydrin reacts with alanine forming a Ruhemann’s purple (RP) compound. RP and chloral hydrate (CH) were introduced into gelatin to form a tissue equivalent RP gel for radiation dose measurements, 5–450 Gy. The gel color fades proportionally with the absorbed dose. Addition of CH to the gel improved its radiation sensitivity and fading. RP was analyzed by FTIR spectrometer and the gel by UV–Vis spectrophotometer at 404 and 572 nm. Dose–response is nearly temperature independent from 22 to 30 °C but it is a time dependent after irradiation. Uncertainty (2σ) in dose estimation is less than 6.0%.
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Acknowledgements
This work was financially supported by National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority (AEA), Nasr City, Cairo, Egypt for basic research in the field of radiation technology applications.
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Soliman, Y.S., Alkhuraiji, T.S. Characterization of a new gel based on alanine–ninhydrin for possible use in radiation dosimetry. J Radioanal Nucl Chem 314, 241–250 (2017). https://doi.org/10.1007/s10967-017-5405-9
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DOI: https://doi.org/10.1007/s10967-017-5405-9