Plutonium(III)-ion selective electrode of liquid membrane type using multidentate phosphine oxide ionophore

Plutonium(III)-ion selective electro de consisting of phosphine oxides such as bis-(diphenylphosphoryl) -methane as an ionophore was developed. Fundam ental data, which were utilized for designing the electrode, on the ion tra nsfer of Pu3+ across aqueous (w)/organic (org) solutions interface facilita ted by the phosphine oxide derivatives were obtained by ion-transfer polaro graphy at the w/og interface. The Pu(III)-ISE prepared exhibited Nernstian response to the concentration of Pu3+ in the sample solution. Interference of UO22+, U4+, NpO2+ and Pu4+ was investigated. (C) 1999 Elsevier Science B .V. All rights reserved.