Chitkara Open Access Journals - Blog

Spectrophotometric Study of Polymeric DyesGels After a Gamma Irradiation Process for its Possible Use as a Radiation Dosimeter


This work aims to evaluate a dosimetric system composed of green malachite supported in agarose. Previous work showed that solutions of green malachite irradiated at 1 to 40 kGy present a linear behavior. This system is a gel composed of green malachite (2.5×10–3 M), sodium benzoate (1%), and agarose (1%) that was exposed tovarious doses of gamma irradiation. The irradiated systems were measured with a UV-V is spectrophotometer at 619 nm. Experimental parameters (such as dose rate, doses, and temperature) were controlled and optimized for reproducible and reliable results. More studies are needed to propose a dosimeter in the system in the range of 1.8 to 4.0 kGy.


A L Meléndez-López, M F García-Hurtado, J Cruz-Castañeda, A Negrón-Mendoza, S Ramos-Bernal and A HerediaNational Autonomous University of Mexico (UNAM), PO Box 70-543, 04510 Mexico City, Mexico


Polymeric dyes gels, Linearity dose -response, Gamma radiation



S. Chu, A. Wieser, H. Feist, and D. F. Regulla, Int. J. Radiat. Appl. Instrumentation. Part A. Appl. Radiat.

Isot. 40, 993 (1989).

A. Meléndez-López, A. Negrón-Mendoza, V. Gómez-Vidales, R. M. Uribe, and S. Ramos-Bernal, Radiat. Phys. Chem. 104, 230 (2014).

N. Azam, B. C. Robert, C. B. M., G. K. P., G. J. M., M. W. L., M. A. S., N. Ravinder, R. J. E., and S. C. G., Med. Phys. 25, 2093 (1998).

A. J. Swallow and A. Charlesby, Radiation Chemistry of Organic Compounds: International Series of Monographs on Radiation Effects in Materials. (Elsevier Science, 1960).

M. J. Day and G. Stein, Nature 166, 146 (1950).

C. Baldock, Y. De Deene, S. Doran, G. Ibbott, A. Jirasek, M. Lepage, K. B. McAuley, M. Oldham, and L. J. Schreiner, Phys. Med. Biol. 55, R1 (2010).

J. W. T. Spinks and R. J. Woods, An Introduction to Radiation Chemistry (Wiley, 1990).