Toluidine Blue O-Gelatin Gel Dosimeter for Radiation Processing  

作　　者：S. M. Gafar M. A. El-Kelany M. A. El-Ahdal S. R. El-Shawadfy 

机构地区：[1]National Center for Radiation Research and Technology, AEA, Cairo, Egypt

出　　处：《Open Journal of Polymer Chemistry》2014年第3期56-61,共6页高分子化学期刊（英文）

摘　　要：In this study the spectrophotometric response of the Toluidine Blue O (TBO)-gelatin gel dosimeter irradiated with gamma rays was characterized. Preparation of dyed-gelatin gel takes place in neutral medium;to give eventually gel dosimeter has a sharp absorbance peak at 635 nm that bleaches quantitatively upon irradiation and the colour change can be measured with UV-VIS spectrophotometer. The useful dose range was 1 - 150 Gy. The radiation chemical yield (G-value) of gel dosimeter was calculated and found to increase by increasing concentration of dye. Post-irradiation storage on the response of gel is discussed. The dose response function, radiation sensitivity, and dependences of the response on environmental factors were studied.In this study the spectrophotometric response of the Toluidine Blue O (TBO)-gelatin gel dosimeter irradiated with gamma rays was characterized. Preparation of dyed-gelatin gel takes place in neutral medium;to give eventually gel dosimeter has a sharp absorbance peak at 635 nm that bleaches quantitatively upon irradiation and the colour change can be measured with UV-VIS spectrophotometer. The useful dose range was 1 - 150 Gy. The radiation chemical yield (G-value) of gel dosimeter was calculated and found to increase by increasing concentration of dye. Post-irradiation storage on the response of gel is discussed. The dose response function, radiation sensitivity, and dependences of the response on environmental factors were studied.

关 键 词：GEL TOLUIDINE Blue O DOSIMETER γ RAYS and Low Dose 

分 类 号：R73[医药卫生—肿瘤]