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

作者：Tutulea Anastasiu Mihaela Dana; Wilson Deivy; del Valle Manel; Schreiner Cristina Mihaela; Cretescu Igor^*

来源：Sensors (Switzerland), 2013, 13(4): 4367-4377.

DOI：10.3390/s130404367

• copper
• solid-contact electrode
• PVC membrane
• potentiometry
• selectivity

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 mu M. The proposed sensor revealed good selectivity towards a group of transition metal ions.

• 出版日期2013-4