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Hg (II) Selective Electrode Based on Poly-O-Toluidine Tin-Zirconium (IV) Molybdophosphate Nano- Composite

Journal of Chemistry and Applied Chemical EngineeringISSN : 2576-3954

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Hg (II) Selective Electrode Based on Poly-O-Toluidine Tin-Zirconium (IV) Molybdophosphate Nano- Composite

Present work deals with the fabrication and potentiometric studies of a novel Hg (II) ion selective electrode based on nano-composite poly-o-toluidine tin-zirconium (IV) molybdophosphate. The synthesized material was characterized through the instrumental techniques viz. FT-IR, FE-SEM, TEM, XRD and TG/DTA. The higher IEC (2.40 meq/g) and selectivity for mercuric ions, prove its best candidature for the fabrication of a Hg (II) ion selective electrode. The designed electrode follows the Nernstion response over a wide concentration range (1×10‒7 M to 1×10‒1 M) and pH (2.5 to 8.0) with a slop of 24.82 mV/decade. The response time of proposed electrode was observed to be 16 seconds and it can be used effectively at least for four months without any measurable change in its potential response. The lower detection limit of electrode is 3.55×10‒8 M. The analytical importance of ISE has been established by employing it as an indicator electrode for the estimation of Hg (II) ions in the industrial waste

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