Fluorimetric determination of inorganic selenium in waters with the use of anion-exchange sorbents

We have investigated a possibility of sorption concentration concurrently with fractionation of different valence forms of inorganic selenium during fluorimetric determination of its mass concentration in natural and drinking waters. We have also studied sorption of anions of tetra- and hexavalent selenium from the aqueous medium on the surface of anion-exchange sorbents. We have found optimal conditions of sorption and desorption of selenate- and selenite-anions on the strong-base anion-exchanger AV-17.