Fabrication of Eriochrome Black T Indicator as Thin Film Sensor Based On Conductive Glass (G/EBT) Electrode in Complexometric Titration

kodih F, Farhat NB and Abu Saelik RJ

Published on: 2021-07-16

Abstract

The substrate dependent spin coating a thin films of Eriochrome Black T indicator on conductive glass formed from F-SnO2 as glass/indicator was studied in complexometric titration in aqueous solution at 298 K. The change of the open circuit potential with hardness concentration (E- hardness) curve is linear with slope of 0.052 V/dec at 298 K. The standard potential of the above electrode E⁰, was determined with respect to the SCE as reference electrode. The recovery percentage for complexometric titration using G/EBT as indicator electrode was calculated. The result show that the electrode very sensitivity for detection of total hardness.