A Solid-Contact Ion Selective Electrode for Copper(II) Using a Succinimide Derivative as Ionophore

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....

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Bibliographic Details
Main Authors: Mihaela Dana Tutulea-Anastasiu, Deivy Wilson, Manel del Valle, Cristina Mihaela Schreiner, Igor Cretescu
Format: Article
Language:English
Published: MDPI AG 2013-04-01
Series:Sensors
Subjects:
Online Access:http://www.mdpi.com/1424-8220/13/4/4367
Description
Summary: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.
ISSN:1424-8220