Dosimetric characteristics of different types of saccharides: An EPR and UV spectrometric study

作者：Karakirova Y^*; Yordanov N D; De Cooman H; Vrielinck H; Callens F

来源：Radiation Physics and Chemistry, 2010, 79(5): 654-659.

DOI：10.1016/j.radphyschem.2009.12.003

• EPR spectroscopy
• Irradiation
• Saccharides
• Free radicals
• UV spectrometry
• Dosimetry

The time stability and dose response of the free radicals produced in various types of "less-studied" mono- and disaccharides by gamma-radiation is studied by EPR (Electron Paramagnetic Resonance) and UV spectrometry. The time evolution of the shape of the EPR spectra of irradiated saccharides is investigated from 5 min to 5 months after irradiation. The intensity of the stable EPR signal is studied as a function of the absorbed gamma-dose in the range 0.5-20 kGy. Aqueous solutions of irradiated solid saccharides exhibit a UV absorption maximum in the range 250-290 nm. A linear dependency is found between the magnitude of the UV absorption maximum and the absorbed gamma-dose. The time stability of the UV absorption maximum is also studied for every saccharide. The results are compared with those obtained for irradiated sucrose.

• 出版日期2010-5