Insights into the anodic stripping voltammetric behavior of bismuth film electrodes

Wang, Joseph; Lü, Jian; Kirgöz, Ülkü Anık; Hočevar, Samo B.; Ogorevc, Božidar

doi:10.1016/s0003-2670(01)00818-2

Cited by 350 publications

(259 citation statements)

References 7 publications

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“…After addition of 48 mmol L À1 of Bi(III) to the same solution, the peaks increased significantly in height including that of Hg, the exception being Cu, which remained almost the same. In addition, most peak positions were slightly shifted in the positive direction, depending on the metal: the stripping peak of Zn remained at À 1.125 V, Cd was shifted from À 0.799 to À 0.773 V, Pb was shifted from À 0.584 to À 0.541 V, and Cu from À 0.099 to À 0.079 V, and, finally, the Hg stripping peak remained at the same position, at 0.244 V. Using a GPCE modified with Bi film, no evidence of ZnCu intermetallic compound formation was obtained as observed in [32]: no additional peaks appeared after that of Cu. Moreover, Zn and Cu peaks were well defined and linearly dependent on concentration.…”

Section: Full Papermentioning

confidence: 74%

“…However, it has been proved that it is also possible to determine metals that are stripped after Bi, in particular Cu [32]. A metal ion with a more positive stripping potential was added to the solution in order to evaluate BiFE sensitivity and selectivity to metal ions with more positive stripping potentials: Hg(II) was chosen for this purpose.…”

Section: Full Papermentioning

confidence: 99%

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Characterization and Application of Bismuth‐Film Modified Graphite‐Polyurethane Composite Electrodes

et al. 2010

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Bismuth films (BiF) deposited in situ on graphite-polyurethane composite electrodes were successfully used for the determination of Zn, Cd, Pb, Cu and Hg, simultaneously in acetate buffer solution pH 4.5 using square wave anodic stripping voltammetry. It is possible to determine metals reoxidized at potentials more negative and more positive than Bi using in situ deposited BiF; reoxidation was studied by electrochemical impedance spectroscopy. The BiFmodified electrode was applied to analyse tap water. The influence of surface-active compounds, Triton X-100 and bovine serum albumin, on the stripping of these metals was investigated; Nafion coatings did not significantly improve the performance.

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Section: Full Papermentioning

confidence: 74%

Section: Full Papermentioning

confidence: 99%

Characterization and Application of Bismuth‐Film Modified Graphite‐Polyurethane Composite Electrodes

et al. 2010

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“…Recently, a significant step forward has been done by the introduction and development of bismuth 5 and antimony-based electrodes. 6−8 Bismuth film electrodes (BiFEs) consist of an electrochemically generated thin bismuth film, deposited predominantly on carbon-based substrates, such as glassy carbon, 9 carbon fiber, 10 or screen-printed carbon. 11 The bismuth film is mechanically stable, exhibiting high electroanalytical performance for trace metal analysis well comparable to the mercury electrodes.…”

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confidence: 99%

Diagnostics of Anodic Stripping Mechanisms under Square-Wave Voltammetry Conditions Using Bismuth Film Substrates

et al. 2012

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A mechanistic study to provide diagnostics of anodic stripping electrode processes at bismuth-film electrodes is presented from both theoretical and experimental points of view. Theoretical models for three types of electrode mechanisms are developed under conditions of square-wave voltammetry, combining rigorous modeling based on integral equations and the step function method, resulting in derivation of a single numerical recurrent formula to predict the outcome of the voltammetric experiment. In the course of the deposition step, it has been assumed that a uniform film of the metal analyte is formed on the bismuth substrate, in situ deposited onto a glassy carbon electrode surface, without considering mass transfer within either the bismuth or the metal analyte film. Theoretical data are analyzed in terms of dimensionless critical parameters related with electrode kinetics, mass transfer, adsorption equilibria, and possible lateral interactions within the deposited metal particles. Theoretical analysis enables definition of simple criteria for differentiation and characterization of electrode processes. Comparing theoretical and experimental data, anodic stripping processes of zinc(II), cadmium(II), and lead(II) are successfully characterized, revealing significant differences in their reaction pathways. The proposed easy-to-perform diagnostic route is considered to be of a general use while the bismuth film exploited in this study served as a convenient nonmercury model substrate surface.

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“…Wang introduced Bi-film (on glassy carbon and carbon fiber substrates) for ASV measurements of heavy metals as a sustainable alternative of mercury, i.e. hanging mercury drop electrode (HMDE), mercury film electrode (MFE) [33,34]. Bismuth-based electrodes address the growing concerns regarding the toxicity and the ease of measurement, because i) bismuth is less toxic than mercury, and ii) bismuth film allows for the measurement in the presence of oxygen, avoiding the expensive and tedious oxygen removing.…”

Section: Detection Of Zinc Ions Via Anodic Stripping Voltammetrymentioning

confidence: 99%

Sustainable monitoring of Zn(II) in biological fluids using office paper

Cinti

Lellis

Moscone

et al. 2017

Sensors and Actuators B: Chemical

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a b s t r a c tHerein, we describe a sustainable and inexpensive approach to monitor Zn(II) in biological fluids by fabricating an office paper-based electrochemical sensor. By following two easy steps, consisting of wax patterning and electrode screen-printing, the office paper provides an effective electroanalytical tool that is easily extensible to a broad range of analytes. This approach would be able to develop affordable userfriendly sensing devices, tackling the lack of resources in regions with poor-settings/facilities. In order to provide more details regarding the screen-printed electrodes fabrication, office paper, Whatman #1 chromatrographic paper, and polyester have been characterized with electrochemical, morphological, and mechanical tests and compared. Using office paper, Zn(II) has been detected linearly up to 2 g/mL with a detection limit equal to 25 ng/mL and a relative standard deviation of 8%. To highlight the feasibility, reliability, and easiness of the proposed electrochemical sensor, Zn(II) has been detected in serum and sweat at physiological level ( g/mL), and the accuracy of the method has been verified by satisfactory recoveries close to 100%.

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Insights into the anodic stripping voltammetric behavior of bismuth film electrodes

Cited by 350 publications

References 7 publications

Characterization and Application of Bismuth‐Film Modified Graphite‐Polyurethane Composite Electrodes

Characterization and Application of Bismuth‐Film Modified Graphite‐Polyurethane Composite Electrodes

Diagnostics of Anodic Stripping Mechanisms under Square-Wave Voltammetry Conditions Using Bismuth Film Substrates

Sustainable monitoring of Zn(II) in biological fluids using office paper

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