Anodic stripping voltammetry: affordable and reliable alternative to inductively coupled plasma-based analytical methods

Planková, Alexandra; Jampílek, Josef; Švorc, Ľubomír; Hanko, Michal; Mikuš, Peter

doi:10.1007/s00706-017-2138-y

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…Over the last years, electroanalytical methods have been widely used for HMs due to their low cost, good selectivity, and low detection limits. , In the electrochemical analysis, graphite (G) has been used as the electrode material for sensors because of its high conductivity, relative inertness, wide voltage range, low cost, and easy surface modification and preparation. , For instance, a porous nitrogen-doped metal–organic framework supported on carbon has been tested for measuring trace Cd(II) concentration . In addition, it is well reported that G in the presence of hierarchical porous carbon and metal oxides results in electrochemical devices with enhanced response.…”

Section: Introductionmentioning

confidence: 99%

Square-Wave Voltammetric Detection of Zn(II) and Cd(II) with a Graphite/Carbon Paste Electrode Decorated with 2-Hydroxy-1,4-naphthoquinone

Carhuayal-Alvarez,

Ascencio-Flores,

Quiroz-Aguinaga

et al. 2023

ACS EST Water

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The concentration of heavy metals (HMs) in rivers continues to increase beyond regional background values, thereby impacting human health and disrupting ecological balance. In this context, an electrochemical sensing device to detect HM ions Zn(II) and Cd(II) in river waters is herein reported. It consists of graphite (G) decorated with 2-hydroxy-1,4-naphthoquinone (HNFQ) incorporated in a carbon paste electrode (CPE), and the G surface modification with HNFQ was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronocoulometry (CC). The electroanalytical behavior and detection of Zn(II) and Cd(II) were evaluated by square-wave voltammetry (SWV) and CV. The developed sensor exhibits excellent stability, reproducibility, repeatability, and selectivity in the presence of interferents. The optimal G/HNFQ-CPE sensitivity is reflected by the limits of detection (LOD, 0.28 ± 0.02 μmol L −1 for Zn and 0.21 ± 0.03 μmol L −1 for Cd), limits of quantification (LOQ, 0.95 ± 0.09 μmol L −1 for Zn and 0.70 ± 0.11 μmol L −1 for Cd), and linear working range (0.47−93.8 μmol L −1 ). DFT calculations were performed to obtain molecular insights into the electrode/ electrolyte solution interface. Finally, the sensor was validated using the atomic absorption technique, which places G/HNFQ-CPE as a promising electrode for Zn(II) and Cd(II) SWV detection.

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Section: Introductionmentioning

confidence: 99%

Square-Wave Voltammetric Detection of Zn(II) and Cd(II) with a Graphite/Carbon Paste Electrode Decorated with 2-Hydroxy-1,4-naphthoquinone

Carhuayal-Alvarez,

Ascencio-Flores,

Quiroz-Aguinaga

et al. 2023

ACS EST Water

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Electrochemical evaluation and determination of vindesine used in cancer chemotherapy at disposable pencil graphite electrode by voltammetric method

Önal

Levent

2023

Monatsh Chem

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Evaluation of Performance and Longevity of Ti-Cu Dry Electrodes: Degradation Analysis Using Anodic Stripping Voltammetry

Carvalho,

Rodrigues,

Santos

et al. 2024

Sensors

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This study aimed to investigate the degradation of dry biopotential electrodes using the anodic stripping voltammetry (ASV) technique. The electrodes were based on Ti-Cu thin films deposited on different polymeric substrates (polyurethane, polylactic acid, and cellulose) by Direct Current (DC) magnetron sputtering. TiCu0.34 thin films (chemical composition of 25.4 at.% Cu and 74.6 at.% Ti) were prepared by sputtering a composite Ti target. For comparison purposes, a Cu-pure thin film was prepared under the same conditions and used as a reference. Both films exhibited dense microstructures with differences in surface topography and crystalline structure. The degradation process involved immersing TiCu0.34 and Cu-pure thin films in artificial sweat (prepared following the ISO standard 3160-2) for different durations (1 h, 4 h, 24 h, 168 h, and 240 h). ASV was the technique selected to quantify the amount of Cu(II) released by the electrodes immersed in the sweat solution. The optimal analysis conditions were set for 120 s and −1.0 V for time deposition and potential deposition, respectively, with a quantification limit of 0.050 ppm and a detection limit of 0.016 ppm. The results showed that TiCu0.34 electrodes on polyurethane substrates were significantly more reliable over time compared to Cu-pure electrodes. After 240 h of immersion, the TiCu0.34 electrodes released a maximum of 0.06 ppm Cu, while Cu-pure electrodes released 16 ppm. The results showed the significant impact of the substrate on the electrode’s longevity, with cellulose bases performing poorly. TiCu0.34 thin films on cellulose released 1.15 µg/cm2 of copper after 240 h, compared to 1.12 mg/cm2 from Cu-pure films deposited on the same substrate. Optical microscopy revealed that electrodes based on polylactic acid substrates were more prone to corrosion over time, whereas TiCu thin-film metallic glass-like structures on PU substrates showed extended lifespan. This study underscored the importance of assessing the degradation of dry biopotential electrodes for e-health applications, contributing to developing more durable and reliable sensing devices. While the study simulated real-world conditions using artificial sweat, it did not involve in vivo measurements.

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Anodic stripping voltammetry: affordable and reliable alternative to inductively coupled plasma-based analytical methods

Cited by 3 publications

References 13 publications

Square-Wave Voltammetric Detection of Zn(II) and Cd(II) with a Graphite/Carbon Paste Electrode Decorated with 2-Hydroxy-1,4-naphthoquinone

Square-Wave Voltammetric Detection of Zn(II) and Cd(II) with a Graphite/Carbon Paste Electrode Decorated with 2-Hydroxy-1,4-naphthoquinone

Electrochemical evaluation and determination of vindesine used in cancer chemotherapy at disposable pencil graphite electrode by voltammetric method

Evaluation of Performance and Longevity of Ti-Cu Dry Electrodes: Degradation Analysis Using Anodic Stripping Voltammetry

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