首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Dosimetric characteristics of different types of saccharides: An EPR and UV spectrometric study
Authors:Y Karakirova  ND Yordanov  H De Cooman  H Vrielinck  F Callens
Institution:1. Bulgarian Academy of Sciences, Institute of Catalysis, 1113 Sofia, Bulgaria;2. Ghent University, Department of Solid State Sciences, B-9000 Gent, Belgium;1. Quantum Beam Science Directorate, Japan Atomic Energy Agency (JAEA) 1233 Watanuki, Takasaki, Gunma 370-1292, Japan;2. Advanced Research Institute, Japan Atomic Energy Agency 1233 Watanuki, Takasaki, Gunma 370-1292, Japan;1. Department of Archaeometry and Physicochemical Measurements, R.C. ‘Athena’, P.O. Box 159, Kimmeria University Campus, 67100 Xanthi, Greece;2. Nuclear Physics Laboratory, Physics Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;3. General Hospital of Xanthi, 67100 Xanthi, Greece;1. Department of Physics, Oklahoma State University, Stillwater, OK 74078, USA;2. National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;1. Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India;2. Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India;1. Experimental Nuclear Physics Department (Cyclotron Facility), Nuclear Research Center, Atomic Energy Authority, P.O. 13759, Cairo, Egypt;2. Accelerators and Ion Sources Department, Nuclear Research Center, Atomic Energy Authority, P.O. 13759, Cairo, Egypt;3. Central Lab. for Elemental and Isotopic Analysis, Nuclear Research Center, Atomic Energy Authority, P.O. 13759, Cairo, Egypt;4. Experimental Nuclear Physics Department, Nuclear Research Center, Atomic Energy Authority, P.O. 13759, Cairo, Egypt;5. Physics Department, Faculty of Science, Zagazig University, P.O. 44519, Zagazig, Egypt
Abstract:The time stability and dose response of the free radicals produced in various types of “less-studied” mono- and disaccharides by γ-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 γ-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 γ-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.
Keywords:
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号