Spectrophotometric properties of azo dye metal complex and its possible use as radiation dosimeter

The current work describes the physico-chemical studies of two dosimetry systems. Aqueous solution of 1, 5 diphenyl carbazone (DPC) incorporating with chromium (III) to form a colored azo dye metal complex in two methods liquid and gel. Under the effect of γ-irradiation, the colored complex undergoes visual color change from red to colorless. The prepared complex can be used as a dosimeter and applicable in dose range 0.2-6; 0.02-1 kGy for both dosimetry systems. Electrical conductivity was measured and reflecting its application as sensor. The dosimetric characteristics of this complex solution were investigated spectrophotometrically at גmax at 540 nm. Complex sensitivity for γ-radiation, pre and post-irradiation storage under different conditions were illustrated. Moreover, the applications of these results of metal uptake resembles to dosimeter.