Lead(II)-Selective Electrode Based on Phenyl Disulfide.

ABBASPOUR Abdolkarim, KHAJEH Behnam

doi:10.2116/analsci.18.987

Lead(II)-Selective Electrode Based on Phenyl Disulfide.

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ABBASPOUR Abdolkarim

Chemistry Department, Shiraz University
KHAJEH Behnam

Chemistry Department, Shiraz University

書誌事項

タイトル別名

Lead 2 Selective Electrode Based on Phenyl Disulfide

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説明

A PVC membrane electrode for lead ions based on phenyl disulfide as the membrane carrier was developed. The electrode exhibits a good Nernstian slope of 29.3 ± 0.7 mV/decade and a linear range of 2.0 × 10^-6 - 1.0 × 10^-2 M for Pb(NO₃)₂. The limit of detection is 1.2 × 10^-6 M. It has a response time of 45 s and can be used for at least fifty days without any divergence in potential. The proposed membrane sensor revealed high selectivity for Pb²⁺ over a wide variety of other metal ions and could be used in the pH range of 3.5 - 6.3. The electrode was used as an indicator electrode in potentiometric titration of lead ions.