Ready-To-Use Single-Strip Paper Based Sensor For Multiplex Ion Detection

Keywords

Ion-selective electrodes; Multiplex detection; Single-strip; Solid contact paper-based sensors

Abstract

Ion-selective electrodes (ISEs) are an efficient and versatile tool for ion detection. However, portability and applicability for field applications are often limited by the need of a conditioning step, and high cost of the needed bulky reference electrode. Herein, the traditional conditioning protocol of ISEs has been eliminated and a paper-based solid-contact ISE (PBSC-ISE) has been integrated with a paper-based solid-contact reference electrode (PBSC-RE) in a single strip format for on-site analysis. The PBSC-RE is based on the copolymer methyl methacrylate-co-decyl methacrylate (MMA-DMA) (support matrix), combined with ionic liquids (ILs) to create and maintain a stable potential that is un-affected by a change in ionic activity. This single-strip ready-to-use sensor yields a Nernstian response towards Na+, K+, and I− ions with submicromolar limits of detection, and is able to be used for multiplex analysis.

Publication Date

2-1-2018

Publication Title

Sensors and Actuators, B: Chemical

Volume

255

Number of Pages

1781-1787

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.snb.2017.08.194

Socpus ID

85028943804 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85028943804

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