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

Sensors

Mihaela Dana Tutulea-Anastasiu²  Deivy Wilson¹  Manel del Valle¹  Cristina Mihaela Schreiner³ 

[1] Sensors and Biosensors Group, Department of Chemistry, Universitat Autònoma de Barcelona, EdificiCn, Bellaterra 08193, Catalonia, Spain; E-Mails:;Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University, 73 D. Mangeron Street, Iasi 700050, Romania; E-Mail:;Faculty of Electrical Engineering, “Gheorghe Asachi” Technical University, 53 D. Mangeron Street, Iasi 700050, Romania; E-Mail:

关键词: copper;    solid-contact electrode;    PVC membrane;    potentiometry;    selectivity;   

DOI  :  10.3390/s130404367

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.