Lead-Selective Membrane Potentiometric Sensor Based on a Recently Synthesized Bis(Anthraquinone) Sulfide Derivative
- 1 December 1998
- journal article
- research article
- Published by Taylor & Francis in Analytical Letters
- Vol. 31 (15) , 2591-2605
- https://doi.org/10.1080/00032719808005329
Abstract
A new PVC membrane electrode for lead ions, based on bis[(1-hydroxy-9,10-anthraquinone)-2-methyl]sulfide as membrane carrier, was prepared. The sensor exhibits a Nernstian response for Pb2+ over a wide concentration range (5.6 × 10−3-4.0 × 10−6 M). It has a response time of about 30 s and can be used for at least 3 months without any divergence in potentials. The proposed membrane sensor revealed good selectivities for Pb2+ over a wide variety of other metal ions. It was used as an indicator electrode in potentiometric titration of lead ion.Keywords
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