Radiochromic liquid dosimeter based on <i>p</i> -arsanilic acid for gamma radiation monitoring

Abstract Organoarsenic can be applied to feed to improve feed efficiency or as a radiation dosimeter, as presented in this study. A developed radiochromic solution and powder based on p -arsanilic acid (P-ASA) was evaluated at various concentrations. Using a UV–vis Spectrophotometer, EPR analysis were operated, the spectrophotometric characteristics of P-ASA aqueous solutions that were both unirradiated and gamma-irradiated were evaluated. For applications involving moderate dose dosimetry, two absorption peak intensities were observed at λ max 300 nm and 361 nm following gamma ray exposure within the range of up to 4.5 kGy. The results indicate that P-ASA solutions exhibit good dosimetric properties and can be considered as a dosimeter.