Medições espectrofotométricas da oxidação no dosímetro químico Fricke Xylenol Gel (FXG): avaliação das disposições das amostras pós-irradiações

Abstract

The spectrophotometric method was used for oxidation determination in chemical gel dosimeter. The method based on the reaction of the Fe2+ to Fe3+ lead to increases in the magnitude of the absorbance signal monitored at 585 nm. The chemical dosimeter was irradiated and maintained in the horizontal and vertical positions with and without cover for the analysis of oxidation due to radiation or contact with oxygen. The method was successfully applied for oxidation determination in Fricke Xylenol Gel (FXG), and the results agree with the better accommodation position of this chemical gel dosimeter.