Af. Maged et al., A CYANOCOBALAMIN DOSIMETER FOR MONITORING GAMMA-RADIATION DOSES OF 0.1-2 KGY, Radiation physics and chemistry, 50(2), 1997, pp. 179-181
Citations number
17
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Physical","Physics, Atomic, Molecular & Chemical
A simple dosimeter is described for measuring gamma-ray doses useful f
or insect sterilization, seed-sprouting inhibition and food shelf-life
extensions. The red aqueous solution of cyanocobalamin (B-12) before
irradiation, assumes a stable yellow color when irradiated. It shows a
linear response of absorbance decrease with the dose over the range o
f 0.1-2.0 kGy when the concentration of cyanocobalamin is equal 0.09 m
M. The radiation-induced color is analyzed spectrophotometrically at t
he maximum absorption band (361 nm). The absorption spectra, dose resp
onse and post-irradiation stability of the dosimeter are discussed. (C
) 1997 Elsevier Science Ltd.