Voltammetric determination of metal ions beyond mercury electrodes. A review

Ariño, Cristina; Serrano, Núria; Dı́az-Cruz, José Manuel; Esteban, Miquel

doi:10.1016/j.aca.2017.07.069

Cited by 145 publications

(101 citation statements)

References 238 publications

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“…Therefore, sensitive and selective determination of toxic heavy metals with a cost‐effective and convenient procedure is paramount important. Compared with conventional determination technologies including atomic absorption spectrometry (AAS), inductively coupled plasma atomic emission spectrometric (ICP‐AES) and solid phase spectrophotometry (SPS) , electrochemical method plays an important role in the determination of heavy metal ions because of its easy operation, good selectivity, in‐situ analysis and low cost .…”

Section: Introductionmentioning

confidence: 99%

Individual and Simultaneous Voltammetric Determination of Cd(II), Cu(II) and Pb(II) Applying Amino Functionalized Fe₃O₄@Carbon Microspheres Modified Electrode

et al. 2019

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Amino‐functionalized Fe3O4@carbon microspheres (NH2−Fe3O4@C) were prepared and the electrochemical sensor was constructed using NH2−Fe3O4@C modified glassy carbon electrodes (GCE) to determine toxic heavy metals in aqueous solution. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) were used to characterize the structure and phase of NH2−Fe3O4@C. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) results indicate that NH2−Fe3O4@C modified GCE possesses large active area and excellent electron transfer. Under optimized electrochemical condition, Cd(II), Pb(II) and Cu(II) were determined using NH2−Fe3O4@C modified GCE. The electrode through amino functionalization exhibits higher sensitivity and lower detection limit toward Cd(II) and Cu(II) due to the acid‐base pairing interaction between the electron‐rich −NH2 ligand and the electron‐deficient heavy metal ions. Compared with other similar results reported in the literature, the NH2−Fe3O4@C modified electrode exhibits wider linear response range while with comparable lower detection limit. It also exhibits excellent stability, reproducibility and anti‐interference ability.

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Section: Introductionmentioning

confidence: 99%

Individual and Simultaneous Voltammetric Determination of Cd(II), Cu(II) and Pb(II) Applying Amino Functionalized Fe₃O₄@Carbon Microspheres Modified Electrode

et al. 2019

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“…Furthermore, electrochemical methods are often utilized for the measurement of heavy metal ions in the environment. The main advantages of these methods are simultaneous detection of multiple heavy metal ions and low detection limit capabilities [16].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Cadmium Cd²⁺ and Lead Pb²⁺ Binding by Fe₂O₃@SiO₂‐EDTA Nanoparticles – Binding Stability and Kinetic Studies

et al. 2019

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This study describes the synthesis and characterization of ethylenediaminetetraacetic acid (EDTA) functionalized magnetic nanoparticles of 20 nm in size – Fe3O4@SiO2‐EDTA – which were used as a novel magnetic adsorbent for Cd(II) and Pb(II) binding in aqueous medium. These nanoparticles were obtained in two‐stage synthesis: covering by tetraethyl orthosilicate and functionalization with EDTA derivatives. Nanoparticles were characterized using TEM, FT‐IR, and XPS methods. Metal ions were detected under optimized experimental conditions using Differential Pulse Anodic Stripping Voltammetry (DPASV) and Hanging Mercury Drop Electrode (HDME) techniques. We compared the ability of Fe3O4@SiO2‐EDTA to bind cadmium and lead in concentration of 553.9 μg L−1 and 647.5 μg L−1, respectively. Obtained results show that the adsorption rate of cadmium binding was very high. The equilibrium for Fe3O4@SiO2‐EDTA‐Cd(II) was reached within 19 min while for the Fe3O4@SiO2‐EDTA‐Pb(II) was reached within 25 minutes. About 2 mg of nanoparticles was enough to bind 87.5 % Cd(II) and 54.1 % Pb(II) content. In the next step the binding capacity of Fe3O4@SiO2‐EDTA nanoparticles was determined. Only 1.265 mg of Fe3O4@SiO2‐EDTA was enough to bind 96.14 % cadmium ions while 5.080 mg of nanoparticles bound 40.83 % lead ions. This phenomenon proves that the studied nanoparticles bind Cd(II) much better than Pb(II). The cadmium ions binding capacity of Fe3O4@SiO2‐EDTA nanoparticles decreased during storage in 0.5 M KCl solution. Two days of Fe3O4@SiO2‐EDTA storage in KCl solution caused the 32 % increase in the amount of nanoparticles required to bind 60 % of cadmium while eight‐days storage caused further increase to 328 %. The performed experiment confirmed that the storage of nanoparticles in solution without any surfactants reduced their binding capacity. The best binding capacity was observed for the nanoparticles prepared directly before the electrochemical measurements.

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“…Square‐wave anodic stripping voltammetry (SWASV) is one of the most applicable techniques for such monitoring. In combination with SWASV, several different electrodes can be used for trace heavy metal detection . Stripping voltammetry in combination with mercury electrodes has superior analytical performance, but due to the problems associated with mercury waste, other alternatives that are less toxic and have comparative performance regarding trace heavy metal analysis are currently being sought.…”

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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Voltammetric determination of metal ions beyond mercury electrodes. A review

Cited by 145 publications

References 238 publications

Individual and Simultaneous Voltammetric Determination of Cd(II), Cu(II) and Pb(II) Applying Amino Functionalized Fe₃O₄@Carbon Microspheres Modified Electrode

Individual and Simultaneous Voltammetric Determination of Cd(II), Cu(II) and Pb(II) Applying Amino Functionalized Fe₃O₄@Carbon Microspheres Modified Electrode

Comparison of Cadmium Cd²⁺ and Lead Pb²⁺ Binding by Fe₂O₃@SiO₂‐EDTA Nanoparticles – Binding Stability and Kinetic Studies

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

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Voltammetric determination of metal ions beyond mercury electrodes. A review

Cited by 145 publications

References 238 publications

Individual and Simultaneous Voltammetric Determination of Cd(II), Cu(II) and Pb(II) Applying Amino Functionalized Fe3O4@Carbon Microspheres Modified Electrode

Individual and Simultaneous Voltammetric Determination of Cd(II), Cu(II) and Pb(II) Applying Amino Functionalized Fe3O4@Carbon Microspheres Modified Electrode

Comparison of Cadmium Cd2+ and Lead Pb2+ Binding by Fe2O3@SiO2‐EDTA Nanoparticles – Binding Stability and Kinetic Studies

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

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Individual and Simultaneous Voltammetric Determination of Cd(II), Cu(II) and Pb(II) Applying Amino Functionalized Fe₃O₄@Carbon Microspheres Modified Electrode

Individual and Simultaneous Voltammetric Determination of Cd(II), Cu(II) and Pb(II) Applying Amino Functionalized Fe₃O₄@Carbon Microspheres Modified Electrode

Comparison of Cadmium Cd²⁺ and Lead Pb²⁺ Binding by Fe₂O₃@SiO₂‐EDTA Nanoparticles – Binding Stability and Kinetic Studies