Stripping voltammetry method for determination of manganese as complex with oxine at the carbon paste electrode with and without modification with montmorillonite clay

El‐Desoky, Hanaa S.; Ismail, Iqbal M.I.; Ghoneim, Mohammed M.

doi:10.1007/s10008-013-2204-2

Cited by 17 publications

(13 citation statements)

References 49 publications

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“…Electrochemical techniques, including anodic and cathodic stripping voltammetry , offer attractive alternatives that are not only sensitive and reproducible, but are rapid and easy to miniaturize ,. These approaches have been demonstrated for the determination of Mn(II) with bulk electrodes fabricated from a wide range of electrode materials, including mercury ,, bismuth ,, boron‐doped diamond ,, carbon , and carbon nanotubes . To address the need for a portable detection system, microscale electrodes are necessary—for instance a stencil‐printed carbon ink electrode on transparent film reported by Bert.…”

Section: Introductionmentioning

confidence: 99%

Determination of Manganese by Cathodic Stripping Voltammetry on a Microfabricated Platinum Thin–film Electrode

et al. 2017

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In this work, we report on the determination of trace manganese (Mn) using cathodic stripping voltammetry (CSV) using a microfabricated sensor with a Pt thin-film working electrode. While an essential trace metal for human health, prolonged exposure to Mn tends to gradually impair our neurological system. The potential sources of Mn exposure make it necessary to monitor the concentration in various sample matrices. Previous work by us and others suggested CSV as an effective method for measuring trace Mn. The analytical performance metrics were characterized and optimized, leading to a calculated limit of detection (LOD) of 16.3 nM (0.9 ppb) in pH 5.5, 0.2 M acetate buffer. Further, we successfully validated Mn determination in surface water with ~90% accuracy and >97% precision as compared with ICP-MS “gold standard” measurement. Ultimately, with stable, accurate and precise electrochemical performance, this Pt sensor permits rapid monitoring of Mn in environmental samples, and could potentially be used for point-of-use measurements if coupled with portable instrumentation

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Section: Introductionmentioning

confidence: 99%

Determination of Manganese by Cathodic Stripping Voltammetry on a Microfabricated Platinum Thin–film Electrode

et al. 2017

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“…El-Desoky and Ghoneim used a carbon paste electrode modified with montmorillonite clay for the determination of Mn as a complex with 8-hydroxyquinoline, achieving a detection limit well into the picomolar range. 18 CSV is the most commonly used stripping technique used for the determination of Mn. In CSV, the deposition potential is usually positive to oxidize analyte(s) onto the electrode surface and during stripping the working electrode potential is swept in the negative direction.…”

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confidence: 99%

“…Some AdSV techniques use mercury electrodes while others have used carbon paste. El-Desoky and Ghoneim used a carbon paste electrode modified with montmorillonite clay for the determination of Mn as a complex with 8-hydroxyquinoline, achieving a detection limit well into the picomolar range …”

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confidence: 99%

Bare and Polymer-Coated Indium Tin Oxide as Working Electrodes for Manganese Cathodic Stripping Voltammetry

et al. 2016

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Though an essential metal in the body, manganese (Mn) has a number of health implications when found in excess that are magnified by chronic exposure. These health complications include neurotoxicity, memory loss, infertility in males, and development of a neurologic psychiatric disorder- manganism. Thus, trace detection in environmental samples is increasingly important. Few electrode materials are able to reach the negative reductive potential of Mn required for anodic stripping voltammetry (ASV), so cathodic stripping voltammetry (CSV) has been shown to be a viable alternative. We demonstrate Mn CSV using an indium tin oxide (ITO) working electrode both bare and coated with a sulfonated charge selective polymer film, polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene-sulfonate (SSEBS). ITO itself proved to be an excellent electrode material for Mn CSV, achieving a calculated detection limit of 5 nM (0.3 ppb) with a deposition time of 3 min. Coating the ITO with the SSEBS polymer was found to increase the sensitivity and lower the detection limit to 1 nM (0.06 ppb). This polymer modified electrode offers excellent selectivity for Mn as no interferences were observed from other metal ions tested (Zn2+, Cd2+, Pb2+, In3+, Sb3+, Al3+, Ba2+, Co2+, Cu2+, Ni3+, Bi3+, and Sn2+) except Fe2+, which was found to interfere with the analytical signal for Mn2+ at a ratio 20:1 (Fe2+:Mn2+). The applicability of this procedure to the analysis of tap, river, and pond water samples was demonstrated. This simple, sensitive analytical method using ITO and SSEBS-ITO could be applied to a number of electroactive transition metals detectable by CSV.

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“…Clay, as an electrode modifier, is a less popular material than, e.g., graphene, although results obtained at such modified electrodes are exceptional [ 31 , 32 , 33 , 34 ]. The reason for highly attractive characteristics for electroanalytical purposes are mainly found in the stability of such easily disposable modifiers, both chemical and mechanical, but are also reasoned due to their strong sorptive properties [ 35 ]. Therefore, clay and its excellent properties may be revealed in high cation and anion exchange capacity, porosity that imparts changes into the electrical conductivity but also catalytic activity towards electrochemical processes [ 36 , 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

Analytical Performance of Clay Paste Electrode and Graphene Paste Electrode-Comparative Study

Skowron¹,

Spilarewicz-Stanek

Guziejewski

et al. 2022

Molecules

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The analytical performance of the clay paste electrode and graphene paste electrode was compared using square wave voltammetry (SWV) and cyclic voltammetry (CV). The comparison was made on the basis of a paracetamol (PA) determination on both working electrodes. The influence of pH and SWV parameters was investigated. The linear concentration ranges were found to be 6.0 × 10−7–3.0 × 10−5 and 2.0 × 10−6–8.0 × 10−5 mol L−1 for clay paste electrode (ClPE) and graphene paste electrode (GrPE), respectively. The detection and quantification limits were calculated as 1.4 × 10−7 and 4.7 ×10−7 mol L−1 for ClPE and 3.7 × 10−7 and 1.2 × 10−6 mol L−1 for GrPE, respectively. Developed methods were successfully applied to pharmaceutical formulations analyses. Scanning electron microscopy and energy-dispersive X-ray spectroscopy were used to characterize ClPE and GrPE surfaces. Clay composition was examined with wavelength dispersive X-ray (WDXRF).

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Stripping voltammetry method for determination of manganese as complex with oxine at the carbon paste electrode with and without modification with montmorillonite clay

Cited by 17 publications

References 49 publications

Determination of Manganese by Cathodic Stripping Voltammetry on a Microfabricated Platinum Thin–film Electrode

Determination of Manganese by Cathodic Stripping Voltammetry on a Microfabricated Platinum Thin–film Electrode

Bare and Polymer-Coated Indium Tin Oxide as Working Electrodes for Manganese Cathodic Stripping Voltammetry

Analytical Performance of Clay Paste Electrode and Graphene Paste Electrode-Comparative Study

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