In situ electrochemical detection of trace metal vapors at bismuth doped carbon screen printed electrodes

Lu, Donglai; Belle, Jeff La; Ninivin, Céline Le; Mabic, Stéphane; Dimitrakopoulos, Telis

doi:10.1016/j.jelechem.2010.02.022

Cited by 9 publications

(3 citation statements)

References 12 publications

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“…It can be concluded that SMS-3 modified SPE has better sensitivity and applicability toward the zinc ions detection. 14,[47][48][49][50][51][52][53][54][55][56] Surface characterization of the modified SPE.-Scanning electron microscopic (SEM) images of unmodified SPE, SMS-3 modified SPE and the modified SPE after extensive use were recorded. Surface morphology of the unmodified SPE is comparatively smooth as compared to the surface of the modified electrode.…”

Section: Electrochemical Determination Of Znmentioning

confidence: 99%

Pseudo Cavity of Schiff Base Ionophore Incorporated in Screen Printed Electrode for Sensing of Zn (II)

Rana¹,

Mittal²,

Kaur³

et al. 2019

J. Electrochem. Soc.

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An electrochemical sensor for Zn 2+ ions in aqueous medium has been developed using disposable screen printed electrodes (SPE). Working electrode of the screen printed electrode has been modified using an ionophore (SMS-3) having schiff base moiety. Surface modification and redox behavior of the SMS-3 modified SPE has been compared with unmodified SPE using Scanning Electron Microscopy (SEM) and Cyclic Voltammetry (CV). Herein, we discovered that modified SPE showed good electrochemical signals and sensitivity toward metal ions. The characteristic cathodic peaks at −0.59 V and 0.55 V of the ionophore was quenched in the presence of Zn 2+ . SMS-3 modified SPE works in the detection range of 0.47 to 5.56 μM with a limit of detection (LOD) 0.92 μM. DFT studies on SMS-3 supported the observations for the modified SPE. Further, sensitivity and selectivity of the electrode were also examined in the presence of various interfering ions and found that these ions did not interfere in the detection of Zn 2+ ions. The electrodes were applied for the detection of Zn 2+ in food samples.

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Section: Electrochemical Determination Of Znmentioning

confidence: 99%

Pseudo Cavity of Schiff Base Ionophore Incorporated in Screen Printed Electrode for Sensing of Zn (II)

Rana¹,

Mittal²,

Kaur³

et al. 2019

J. Electrochem. Soc.

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“…Another sensing approach for gas-phase measurements consists of a Bi-doped SPE covered by a thin layer of hydrogel. This electrode allows the ASV determination of volatile species of Pb, Cd, and Zn generated at room temperature, which are quickly adsorbed onto the porous hydrogel film [ 96 ].…”

Section: Spes Modified With Bimentioning

confidence: 99%

Screen-Printed Electrodes Modified with “Green” Metals for Electrochemical Stripping Analysis of Toxic Elements

Economou

2018

Sensors

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This work reviews the field of screen-printed electrodes (SPEs) modified with “green” metals for electrochemical stripping analysis of toxic elements. Electrochemical stripping analysis has been established as a useful trace analysis technique offering many advantages compared to competing optical techniques. Although mercury has been the preferred electrode material for stripping analysis, the toxicity of mercury and the associated legal requirements in its use and disposal have prompted research towards the development of “green” metals as alternative electrode materials. When combined with the screen-printing technology, such environment-friendly metals can lead to disposable sensors for trace metal analysis with excellent operational characteristics. This review focuses on SPEs modified with Au, Bi, Sb, and Sn for stripping analysis of toxic elements. Different modification approaches (electroplating, bulk modification, use of metal precursors, microengineering techniques) are considered and representative applications are described. A developing related field, namely biosensing based on stripping analysis of metallic nanoprobe labels, is also briefly mentioned.

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“…Finally, the best performances of Bi electrodes were reported by Lu et al for trace metal vapors detection (Lu et al, 2010 ). In this case, Bi powder was simply mixed with carbon ink and the resulting Bi SPE was covered with a 0.1 mm thickness hydrogel layer by immersion in an agarose solution.…”

Section: Introductionmentioning

confidence: 95%

Electrochemical sensors and devices for heavy metals assay in water: the French groups' contribution

et al. 2014

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A great challenge in the area of heavy metal trace detection is the development of electrochemical techniques and devices which are user-friendly, robust, selective, with low detection limits and allowing fast analyses. This review presents the major contribution of the French scientific academic community in the field of electrochemical sensors and electroanalytical methods within the last 20 years. From the well-known polarography to the up-to-date generation of functionalized interfaces, the different strategies dedicated to analytical performances improvement are exposed: stripping voltammetry, solid mercury-free electrode, ion selective sensor, carbon based materials, chemically modified electrodes, nano-structured surfaces. The paper particularly emphasizes their advantages and limits face to the last Water Frame Directive devoted to the Environmental Quality Standards for heavy metals. Recent trends on trace metal speciation as well as on automatic “on line” monitoring devices are also evoked.

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In situ electrochemical detection of trace metal vapors at bismuth doped carbon screen printed electrodes

Cited by 9 publications

References 12 publications

Pseudo Cavity of Schiff Base Ionophore Incorporated in Screen Printed Electrode for Sensing of Zn (II)

Pseudo Cavity of Schiff Base Ionophore Incorporated in Screen Printed Electrode for Sensing of Zn (II)

Screen-Printed Electrodes Modified with “Green” Metals for Electrochemical Stripping Analysis of Toxic Elements

Electrochemical sensors and devices for heavy metals assay in water: the French groups' contribution

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