Abstract
A noble photometric method using a transparent polymer beads consisting of gelatinous poly (sodium acrylate) as an adsorbent was newly developed. Seven different cationic dyes were arbitrarily chosen as a colored species to establish the optimum conditions. It was confirmed that Beer's law held between the absorbance of polymer beads and the concentration of cationic dye when 40 cm3 of sample solution was equilibrated with 2.0 cm3 of polymer gel by shaking for 60 min.
