Uranium-sensitive electrodes based on the uranium-di(octylphenyl)phosphate complex as sensor and alkyl phosphate as mediator in a PVC matrix membrane.
The properties of uranium-sensitive electrodes based on membranes containing uranium di-(4-octylphenyl)phosphate as sensor have been determined, in presence of different phosphates as mediators. The electrode prepared from tritolyl phosphate as mediator was found to give a response of 30 mV/decade over a range of uranium concentration. Interference by Sr(2+), Ba(2+), Ca(2+) and F(-) was also studied, by the mixed solution method. Fluoride interferes severely, by complexation of the UO(2+)(2) ion.
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Iraqi Atomic Energy Commission, P.O. Box 765, Tuwaitha, Baghdad, Iraq.