OJPChem  Vol.4 No.3 , August 2014
Toluidine Blue O-Gelatin Gel Dosimeter for Radiation Processing
Abstract: 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.
Cite this paper: 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.

[1]   Fricke, H. and Morse, S. (1999) The Chemical Action of Roentgen Rays on Dilute Ferrosulphate Solutions as a Measure of Dose. The American Journal of Roentgenology, Radium Therapy, and Nuclear Medicine, 18, 430-432.

[2]   Fricke, H. and Hart, E.J. (1996) Chemical Dosimetry. In: Attix, F.H., Roesch, W.C. and Tochilin, E., Eds., Radiation Dosimetry, 2nd Edition, Vol. 2, Academic Press, New York and London.

[3]   Gore, J.C. and Kang, Y.S. (1984) Measurement of Radiation Dose Distributions by Nuclear Magnetic Resonance (NMR) Imaging. Physics in Medicine and Biology, 29, 1189-1197.

[4]   Cheng, K.L. (1999) Analytical Application of Xylenol Orange-IV: A Spectrophotometric Study of the Ferric Xylenol Orange Complex. Talanta, 3, 147-150.

[5]   Baldock, C., Harris, P.J., Piercy, A.R. and Healy, B. (2001) Experimental Determination of the Diffusion Coefficient in Two-Dimensions in Ferrous Sulphate Gels Using the Finite Element Method. Australasian Physics & Engineering Sciences in Medicine, 24, 19-30.

[6]   Tarte, B.J., Jardine, P.A. and van Doorn, T. (1996) Laser-Scanned Agarose Gel Sections for Radiation Field Mapping. International Journal of Radiation Oncology, Biology, Physics, 36, 175-179.

[7]   Ossipov, D.A. and Hilborn, J. (2006) Poly(Vinyl Alcohol)-Based Hydrogels Formed by “Click Chemistry”. Macromolecules, 39, 1709-1718.

[8]   Purss, K.H., Qiao, G.G. and Solomon, D.H.J. (2005) Effect of “Glutaraldehyde” Functionality on Network Formation in Poly(Vinyl Alcohol) Membranes. Journal of Applied Polymer Science, 96, 780-792.

[9]   Ajji, Z. (2005) Preparation of Poly(Vinyl Alcohol) Hydrogels Containing Citric or Succinic Acid Using Gamma Radiation. Radiation Physics and Chemistry, 74, 36-41.

[10]   Benamer, S., Mahlous, M., Boukrif, A., Masouri, B. and Larbi, Y.S. (2006) Synthesis and Characterisation of Hydrogels Based on Poly(Vinyl Pyrrolidone). Nuclear Instruments and Methods in Physics Research Section B, 248, 284-290.

[11]   Martens, P. and Anseth, K.S. (2000) Characterization of Hydrogels Formed from Acrylate Modified Poly(Vinyl Alcohol) Macromers. Polymer, 41, 7715-7722.

[12]   Peppas, N.A. and Mongia, N.K. (1997) Ultrapure Poly(Vinyl Alcohol) Hydrogels with Mucoadhesive Drug Delivery Characteristics. European Journal of Pharmaceutics and Biopharmaceutics, 43, 51-58.

[13]   Hatakeyema, T., Uno, J., Yamada, C., Kishi, A. and Hatakeyama, H. (2005) Gel-Sol Transition of Poly(Vinyl Alcohol) Hydrogels Formed by Freezing and Thawing. Thermochimica Acta, 431, 144-148.

[14]   Ricciardi, R., Gailet, C., Ducouret, G., Lafuma, F. and Lauporete, F. (2003) Investigation of the Relationships between the Chain Organization and Rheological Properties of Atactic Poly(Vinyl Alcohol) Hydrogels. Polymer, 44, 3375-3380.

[15]   Davies, J.B., Baldock, C. and Bosi, S.G. (2012) A Genipin-Gelatin Gel Dosimeter for Radiation Processing. Radiation Physics and Chemistry, 81, 1263-1265.

[16]   Davies, J.B., Baldock, C. and Bosi, S.G. (2013) Dosimetry Aspects of a Non-Diffusing Genipin-Gelatin Gel. Radiation Physics and Chemistry, 83, 19-27.