Toluidine Blue O-Gelatin Gel Dosimeter for Radiation Processing


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.

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Gafar, S. , El-Kelany, M. , El-Ahdal, M. and El-Shawadfy, S. (2014) Toluidine Blue O-Gelatin Gel Dosimeter for Radiation Processing. Open Journal of Polymer Chemistry, 4, 56-61. doi: 10.4236/ojpchem.2014.43007.

Conflicts of Interest

The authors declare no conflicts of interest.


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