Abstract
Zirconium phosphoborate based heterogeneous membrane electrode has been used as a sensor for yttrium ions in aqueous medium. The electrode shows reproducible and Nernstian behavior for yttrium ions in the oncentration range 10-4M to 10-1M with an RSD of 2%. The electrode does not show any change in response within a pH range of 5-9. The effect of internal solution concentration on the calibration curve was also studied. The electrode performance was also studied in partially non-aqueous medium (5% - 20%) of acetone and ethanol. The system was used successfully as an indicator electrode in potentiometric titration of yttrium ions with EDTA.
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