Multi-element determination of metals and metalloids in waters and wastewaters, at trace concentration level, using electroanalytical stripping methods with environmentally friendly mercury free-electrodes: A review

Alves, Georgina M. S.; Rocha, Luciana S.; Soares, Helena

doi:10.1016/j.talanta.2017.06.077

Cited by 48 publications

(21 citation statements)

References 172 publications

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“…Electrochemical techniques have also found a wide range of applications in trace heavy metals determination. Based on the change of different electrical signals caused by the presence of these elements several techniques have been developed (Bansod et al, 2017;Lu et al, 2018;Ariño et al, 2017;Alves et al, 2017;Cui et al, 2015;Yasri et al, 2011;Town et al, 2001;Gao et al, 2013). The square wave anodic stripping voltammetry (SWASV) is an affordable (low cost) technique that offers low detection limit, high selectivity, accuracy and precision (Gumpu et al, 2015;Bansod et al, 2017;Lu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Validation and Optimization of an in-situ Copper-Modified Glassy Carbon Electrode

Xhanari¹,

Šašek²,

Petovar³

et al. 2018

The International Conference on Advanced Materials and Systems

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Square wave anodic stripping voltammetry (SWASV) technique is one of the most used electrochemical techniques in the determination of the trace amounts of heavy metals in different environments. This is due among other reasons to the fact that this method offers low detection limit, high selectivity and precision at relatively low cost. Modified film electrodes have been found as good replacement to the mercury electrodes. In this work different deposition potentials have been used to optimize an in situ-prepared copper-film glassy carbon electrode (CuFE). In addition, a preliminary study using electrochemical impedance spectroscopy (EIS) was performed to investigate the characteristics of the CuFE sensor.

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Section: Introductionmentioning

confidence: 99%

Validation and Optimization of an in-situ Copper-Modified Glassy Carbon Electrode

Xhanari¹,

Šašek²,

Petovar³

et al. 2018

The International Conference on Advanced Materials and Systems

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“…SWV technique was selected due to its ability to reduce capacitive and parasitic current which was caused by the reduction of dissolved oxygen . The wide potential window provides a great advantage on the application of the presented modified electrode (P1,2‐DAAQ/GCE) for ASV of HMs over other modified electrodes such as Bi‐ and Sb‐coated electrodes, since a confliction present for their oxidation with the oxidation of the other metal ions .…”

Section: Resultsmentioning

confidence: 99%

Novel Sensor Based on Poly (1,2‐Diaminoanthraquinone) for Individual and Simultaneous Anodic Stripping Voltammetry of Cd²⁺, Pb²⁺, Cu²⁺ and Hg²⁺

et al. 2018

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A novel electrochemical sensor based on glassy carbon electrode (GCE) modified by poly (1,2‐diaminoanthraquinone) (P1,2‐DAAQ) has been developed for individual and simultaneous determination of Cd2+, Pb2+, Cu2+ and Hg2+ using square wave anodic stripping voltammetry (SWASV). P1,2‐DAAQ was characterized by cyclic voltammetry (CV) and scan electron microscope (SEM). Several analytical parameters such as the type of electrolyte solution, polymer film thickness, metal deposition time and deposition potential were investigated and optimized. Optimal conditions were obtained by using five scan cycles for polymer synthesis and 120 seconds at −1.6 V for metal electrodeposition in acetate buffer solution. Good linear responses to Cd2+, Pb2+, Cu2+ and Hg2+ in the concentration range from 0 to 120 μg/L were obtained. The limit of detections (LOD) for simultaneous determination of Cd2+, Pb2+, Cu2+ and Hg2+ were 0.3 μg/L, 0.58 μg/L, 1.94 μg/L and 0.26 μg/L, respectively. The developed method was also applied for their detection in real water samples for which favorable results obtained compared with those obtained using inductively coupled plasma – optical emission spectroscopy (ICP‐OES).

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“…7 However, these conventional sensing techniques are complicated, time-consuming, and expensive, making them not suitable for quick detection. In contrast, the electrochemical methods, especially the anodic stripping voltammetry, [8][9][10][11] have been widely recognized as convenient techniques for metal ions detection due to easy operation, low cost and fast response. However, the low sensitivity and selectivity commonly limit their applications in practice owing to the lack of electroactive materials.…”

Section: Introductionmentioning

confidence: 99%

Flower-like Bismuth Metal-Organic Frameworks Grown on Carbon Paper as a Free-Standing Electrode for Efficient Electrochemical Sensing of Cd2+ and Pb2+ in Water

Xiang¹,

Pan²,

Li³

2018

Eng. Sci.

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In this work, a free-standing electrode composed of bismuth terephthalate metal-organic frameworks grown on carbon paper (BiMOF/CP) was successfully prepared by a facile one-pot hydrothermal method. Materials characterization revealed the formation of flower-like ultrathin nanosheets of BiMOF fully covering on the microfibers of carbon paper. The BiMOF/CP was applied in the electrochemical detection of Cd 2+ and Pb 2+ in water. The BiMOF/CP electrode exhibited superior sensing performance with a linear detection of Cd 2+ and Pb 2+ with low detection limits of 1.5 μg/L for Cd 2+ and 2.7 μg/L for Pb 2+ , respectively. The significantly enhanced sensing performance compared to bare carbon paper is attributed to the 3D hierarchical architecture of BiMOF and increased number of exposed surface sites, facilitating the adsorption of metals ions and electron transfer. The prepared novel materials will contribute to the development of cost-effective electrochemical sensors for heavy metal detection. Fig. 1 XRD spectrum of pure CP, BiMOF and BiMOF/CP. 78 | Eng. Sci., 2018, 3, 77-83 © Engineered Science Publisher LLC 2018Fig. 2 SEM image of pure CP (a) and BiMOF/CP (b-d).Fig. 3 XPS survey spectrum (a), Bi 4f (b) O1s (c), and C1s (d) of BiMOF/CP. Engineered Science Research PaperEng. Sci., 2018, 3, 77-83 | 79

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Multi-element determination of metals and metalloids in waters and wastewaters, at trace concentration level, using electroanalytical stripping methods with environmentally friendly mercury free-electrodes: A review

Cited by 48 publications

References 172 publications

Validation and Optimization of an in-situ Copper-Modified Glassy Carbon Electrode

Validation and Optimization of an in-situ Copper-Modified Glassy Carbon Electrode

Novel Sensor Based on Poly (1,2‐Diaminoanthraquinone) for Individual and Simultaneous Anodic Stripping Voltammetry of Cd²⁺, Pb²⁺, Cu²⁺ and Hg²⁺

Flower-like Bismuth Metal-Organic Frameworks Grown on Carbon Paper as a Free-Standing Electrode for Efficient Electrochemical Sensing of Cd2+ and Pb2+ in Water

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Multi-element determination of metals and metalloids in waters and wastewaters, at trace concentration level, using electroanalytical stripping methods with environmentally friendly mercury free-electrodes: A review

Cited by 48 publications

References 172 publications

Validation and Optimization of an in-situ Copper-Modified Glassy Carbon Electrode

Validation and Optimization of an in-situ Copper-Modified Glassy Carbon Electrode

Novel Sensor Based on Poly (1,2‐Diaminoanthraquinone) for Individual and Simultaneous Anodic Stripping Voltammetry of Cd2+, Pb2+, Cu2+ and Hg2+

Flower-like Bismuth Metal-Organic Frameworks Grown on Carbon Paper as a Free-Standing Electrode for Efficient Electrochemical Sensing of Cd2+ and Pb2+ in Water

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Product

Resources

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Novel Sensor Based on Poly (1,2‐Diaminoanthraquinone) for Individual and Simultaneous Anodic Stripping Voltammetry of Cd²⁺, Pb²⁺, Cu²⁺ and Hg²⁺