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International Letters of Chemistry, Physics and Astronomy
Volume 33
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Tartrazine Solution as Dosimeter for Gamma Radiation Measurement

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Abstract:

In this study, Tartrazine aqueous solution was investigated as a simple low-dose dosimeter in the range of 20-500 Gy for the high ionizing radiation, gamma ray. Gradual bleaching of Tartarzine solution was observed with dose by measuring the absorbance of Tartarzine-solutions at specified wavelength, λmax = 428 nm. Tartrazine concentration (10–4, 5 ×10–4 and 10–3 M) and solution-initial pH value (5, 7 and 9) were considered as factors affecting degree of bleaching. It was found that Tartarzine-solution color was diminished gradually with selected dose range due to breakdown of the azo bond. The rate of bleaching increases with the increase of solution-initial pH. Increase of Tartarzine-concentration causes widening of range to which solution is susceptible. The post-irradiated effect (24 hours) was found to cause more bleaching. The sensitivity of Tartrazine solution is not regular with the Tartarzine-concentration and regular with pH.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 33)
Pages:
106-117
DOI:
10.18052/www.scipress.com/ILCPA.33.106
Citation:
M. Gobara and A. Baraka, "Tartrazine Solution as Dosimeter for Gamma Radiation Measurement", International Letters of Chemistry, Physics and Astronomy, Vol. 33, pp. 106-117, 2014
Online since:
May 2014
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