Ion Transfer Voltammetry with an Electrochemical Pen
MetadataShow full item record
Funding and Sponsorship
We present a new electrochemical system that combines paper-based sensing and ion-transfer voltammetry, bringing the latter a step closer toward point-of-care applications. Studies at the interface between two immiscible electrolyte solutions (ITIES) are often performed to detect redox-inactive species; unfortunately, due to the inherent instability of the interface, it is rather poorly explored outside specialized laboratories. Here, we address this limitation by combining a pen-like device containing the gelled organic phase with a paper-supported aqueous phase. This combination makes the system more user-friendly, potentially low-cost, and easy to assemble. We show the applicability of the new cell to analyze both simple and ionophore-facilitated transfer of ions and proteins, preconcentration of species, and analysis of mixtures through combination with paper chromatography. The native ion content of the paper also enabled measurements without added electrolytes. Those studies could broaden the scope for the application of the label-free electrochemical detection of nonredox-active species at points-of-need.
Showing items related by title, author, creator and subject.
Chan, Felix ; Pauwels, L. (2015)© 2020 Proceedings - 21st International Congress on Modelling and Simulation, MODSIM 2015. All rights reserved. This paper proposes a unified framework to study the theoretical properties of forecast combination. By setting ...
Precise point positioning with decimetre accuracy using wide-lane ambiguities and triple-frequency GNSS dataDeo, M.; El-Mowafy, Ahmed (2020)© 2020 Walter de Gruyter GmbH, Berlin/Boston. This paper proposes precise point positioning (PPP) methods that offer an accuracy of a few decimetres (dm) with triple frequency GNSS data. Firstly, an enhanced triple frequency ...
Brown, Graham; Reeders, D.; Dowsett, G.; Ellard, J.; Carman, M.; Hendry, N.; Wallace, J. (2015)© 2015 Brown G et al; licensee International AIDS Society. Introduction: Treatment as prevention has mobilized new opportunities in preventing HIV transmission and has led to bold new UNAIDS targets in testing, treatment ...