Functioning of antimony film electrode in acid media under cyclic and anodic stripping voltammetry conditions

Sebez, Bine; Ogorevc, Božidar; Hočevar, Samo B.; Veber, Marjan

doi:10.1016/j.aca.2013.04.051

Cited by 35 publications

(18 citation statements)

References 27 publications

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“…The available Sb-coating methods are analogous to those used for BiFEs, being the in-situ, ex-situ and bulk the most representative approaches [8][9]. Regarding the substrate, carbon-based substrates revealed better performance than metal electrode materials, being glassy carbon followed by carbon paste the most used supports for the preparation of the film [8,10], although gold and platinum disk electrode [10] as well as boron doped diamond (BDD) were also used [11].…”

Section: Introductionmentioning

confidence: 99%

New approaches to antimony film screen-printed electrodes using carbon-based nanomaterials substrates

Pérez‐Ràfols

Serrano

Dı́az-Cruz

et al. 2016

Analytica Chimica Acta

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Three different commercial carbon nanomaterial-modified screen-printed electrodes based on graphene, carbon nanotubes and carbon nanofibers were pioneeringly tested as electrode platforms for the plating with Sb film. They were microscopically and analytically compared to each other and to the most conventional unmodified carbon screen-printed electrode (SPCE). The obtained detection and quantification limits suggest that the in-situ antimony film electrode prepared from carbon nanofibers modified screen-printed electrode (SbSPCE-CNF) produces a better analytical performance as compared to the classical SPCE modified with antimony for Pb(II) and Cd(II) determination, approving its appropriateness for measuring low μg L(-1) levels of the considered metals. In-situ SbSPCE-CNF was successfully used for the simultaneous determination of Pb(II) and Cd(II) ions, by means of differential pulse anodic stripping voltammetry, in a certified reference estuarine water sample with a very high reproducibility and good trueness.

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Section: Introductionmentioning

confidence: 99%

New approaches to antimony film screen-printed electrodes using carbon-based nanomaterials substrates

Pérez‐Ràfols

Serrano

Dı́az-Cruz

et al. 2016

Analytica Chimica Acta

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“…The Zn(II), Cd(II), and Pb(II) concentrations employed were 89.2 μg/L (simultaneously), as all three analytes were within the linear concentration range for all three 0.6Bi0.4Sb_0.5_mg/L, 0.1Bi0.9Sb_1.0_mg/L, and 0.0Bi1.0Sb_0.5_mg/L combinations at t acc =60 s. In general, the longer the t acc , the more analyte is deposited and a higher stripping signal is expected. Moreover, it was reported previously that by using BiFE, SbFE, and Bi−SbFE and employing longer t acc better analytical performances for heavy metal determination were obtained , . The stripping signal of the three analytes (Δ i ) was plotted vs. t acc , as shown in Figure (one of the three replicates is given).…”

Section: Resultsmentioning

confidence: 99%

“…SbFE was also applied ex situ for heavy metal detection . Different materials were reported as a working electrode platform for SbFE, e. g. screen‐printed electrodes (SPE) , different nanomaterial‐modified SPEs , different carbon‐ and metal‐based substrates (gold and platinum disk electrodes and a carbon fibre microelectrode ) and carbon paste electrodes . Urbanova et al.…”

Section: Introductionmentioning

confidence: 99%

Novel in situ Bi−Sb‐Film Electrodes for Trace Heavy Metal Analysis

Finšgar

Petovar

2018

Electroanalysis

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This work reports on new in situ formed Bi−Sb‐film glassy carbon electrodes (Bi−SbFEs) with different Bi(III):Sb(III) mass concentration ratios (1 : 9, 2 : 8, 3 : 7, 4 : 6, 5 : 5, 6 : 4, 7 : 3, 8 : 2, 9 : 1) and at two different total mass concentrations of Bi(III) and Sb(III), i. e. 0.5 and 1.0 mg/L. The analytical performance of these Bi−SbFEs was compared with Bi‐film (BiFE) and Sb‐film (SbFE) electrodes in 0.1 M acetate buffer solution. All combinations of Bi−SbFEs were selective for Zn(II), Cd(II), and Pb(II) detection. Bi−SbFEs showed linear concentration ranges for Zn(II), Cd(II), and Pb(II) substantially wider than that for BiFE. Moreover, the method's sensitivities can be substantially improved by using different Bi−SbFEs compared with BiFE and SbFE. Most of the Bi−SbFE methods provided satisfactory recovery for Cd(II) determination, many of them also for Pb(II), whereas for Zn(II) only a few methods provided recovery values within the 80.0–120.0 % recovery range. The precision of different Bi−SbFEs were satisfactory for Pb(II) and Cd(II) with an RSD lower than 20.0 %. Accumulation time optimisation resulted in lower LOD and LOQ, higher sensitivity. Finally, electrochemical impedance spectroscopy was employed for the first time to characterise the electroanalytical behaviour of an SbFE. The latter analysis was employed to compare the electrode's properties with pure BiFE and pure GCE, and to show when the system is under a kinetic‐ and/or diffusion‐controlled process.

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“…In addition, other approaches have been reported to be beneficial towards to detection of lead (II) and cadmium (II) for instance reports by Svobodova-Tersarova et al 62 utilised a carbon paste electrode however no direct comparison has been made with carbon electrodes. This is also witnessed within reports by Sebez et al 67 that utilise a modified carbon electrode and compare to a platinum electrode which again presents no direct comparison to the underlying carbon substrate material.…”

Section: Antimony In-situ Modified Electrodes For the Determination Omentioning

confidence: 86%

Metallic modified (bismuth, antimony, tin and combinations thereof) film carbon electrodes

Foster

Souza

Metters

et al. 2015

Analyst

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In this paper in situ bismuth, antimony, tin modified electrodes and combinations thereof are explored towards the model target analytes cadmium(II) and lead(II), chosen since they are the most widely studied, to explore the role of the underlying electrode substrate with respect to boron-doped diamond, glassy carbon, and screen-printed graphite electrodes. It is found that differing electrochemical responses are observed, dependent upon the underlying electrode substrate. The electrochemical response using the available range of metallic modifications is only ever observed when the underlying electrode substrate exhibits relatively slow electron transfer properties; in the case of fast electron transfer properties, no significant advantages are evident. Furthermore these bismuth modified systems which commonly employ a pH 4 acetate buffer, reported to ensure the bismuth(III) stability upon the electrode surface can create create a problem when sensing at low concentrations of heavy metals due to its high background current. It is demonstrated that a simple change of pH can allow the detection of the target analytes (cadmium(II) and lead(II)) at levels below that set by the World Health Organisation (WHO) using bare graphite screen-printed electrodes.

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Functioning of antimony film electrode in acid media under cyclic and anodic stripping voltammetry conditions

Cited by 35 publications

References 27 publications

New approaches to antimony film screen-printed electrodes using carbon-based nanomaterials substrates

New approaches to antimony film screen-printed electrodes using carbon-based nanomaterials substrates

Novel in situ Bi−Sb‐Film Electrodes for Trace Heavy Metal Analysis

Metallic modified (bismuth, antimony, tin and combinations thereof) film carbon electrodes

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