A solid-contact ion selective electrode for copper(II) using a succinimide derivative as ionophore

Mihaela Dana Tutulea-Anastasiu, Deivy Wilson, Manel del Valle, Cristina Mihaela Schreiner, Igor Cretescu

Research output: Contribution to journalArticleResearchpeer-review

22 Citations (Scopus)

Abstract

All-solid-state sensors with polyvinyl chloride (PVC)-based membranes using off-the-shelf N-hydroxysuccinimide (NHS) and succinimide (Succ) ionophores were prepared using DOP (dioctyl phthalate) and NPOE (ortho-nitrophenyloctyl ether) as plasticizers. Good responses were obtained when NHS was used. The potentiometric response of the proposed electrode is independent of pH over the range 2-6. The electrode shows a fast response time of 0.25 s. The electrode exhibits a Super-Nernstian response, with 37.5 mV/decade, with a potentiometric detection limit of 4.4 μM. The proposed sensor revealed good selectivity towards a group of transition metal ions. © 2013 by the authors; licensee MDPI, Basel, Switzerland.
Original languageEnglish
Pages (from-to)4367-4377
JournalSensors
Volume13
Issue number4
DOIs
Publication statusPublished - 1 Apr 2013

Keywords

  • Copper
  • PVC membrane
  • Potentiometry
  • Selectivity
  • Solid-contact electrode

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