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Updated: Jun 28, 2026

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Thick film voltammetric sensors for trace copper based on a cation-exchanger-modified surface
C G Neuhold1, J Wang, V B do Nascimento
1Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003, USA.
Abstract:
Strip-type, preconcentrating/voltammetric sensors, prepared by incorporating a cation-exchange resin within screen-printed carbon inks, are described. Such single-use strips combine the efficient electrostatic accumulation of heavy metals with the use of "mercury-free" surfaces. The uptake of copper(II) from dilute solutions (under open circuit conditions) is followed by voltammetric measurements in a separate blank solution. Various experimental variables have been optimized to yield low detection limits (e.g. 0.5 mug 1(-1) with 10 min accumulation) and good reproducibility (relative standard deviation, 2%). The applicability to assays of drinking water is demonstrated.
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