Determination of trace bismuth by under-potential deposition-stripping voltammetry at mesoporous platinum microelectrodes: application to pharmaceutical products

Battistel, Dario; Daniele, Salvatore

doi:10.1007/s10008-013-2084-5

Cited by 10 publications

(5 citation statements)

References 30 publications

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“…101 Mesoporous microelectrodes have very high surface area, thus allowing the accumulation of relatively large amounts of bismuth at under-potential without saturation of the electrode surface and assuring the reproducibility of the proposed UPD-SV procedure.…”

Section: Electrochemical Techniquesmentioning

confidence: 99%

Characteristics, Applications and Determination of Bismuth

Liu¹,

Xiao²,

Xu³

et al. 2016

j nanosci nanotechnol

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Bismuth has received considerable attention and been widely used in many fields due to its relatively low toxicity and special properties. This paper reviews the physical and chemical characteristics of bismuth, summarizes its applications, and introduces the techniques for the determinations of bismuth. However, the long-term use of bismuth may also bring about some side effects and even toxicity to human body, which was described here as well. In the end, we conclude the current situation and potential future of bismuth in respects of application and determination.

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Section: Electrochemical Techniquesmentioning

confidence: 99%

Characteristics, Applications and Determination of Bismuth

Liu¹,

Xiao²,

Xu³

et al. 2016

j nanosci nanotechnol

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show abstract

“…This electrochemical process is very quick resulting in a large current and high sensitivity; also, each metal is oxidized at a certain voltage, providing specificity [21]. Different types of electrodes, including mercury electrodes [22,23] and metal-based electrodes [24][25][26][27][28][29], were used in the ASV technique for detecting HMs.…”

Section: Introductionmentioning

confidence: 99%

Development of a Sensor Based on Poly(1,2‐diaminoanthraquinone) for Individual and Simultaneous Determination of Mercury (II) and Bismuth (III)

et al. 2021

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Contamination of natural water by mercury (Hg 2 + ) and bismuth (Bi 3 + ) metal ions have been extensively studied due to their toxic effects. A validated square-wave anodic stripping voltammetry (SW-ASV) method for determining Bi 3 + and Hg 2 + ions individually and simultaneously is described. A new electrochemical sensor was constructed using a gold (Au) electrode that has been modified with poly(1,2-diaminoanthraquinone) (p-1,2-DAAQ). Scanning electron microscopy, cyclic voltammetry, and electrochemical impedance spectroscopy were used to characterize the p-1,2-DAAQ/Au modified electrode. Factors such as the polymer film thickness, electrolyte, square wave parameters and preconcentration conditions were optimized to improve the performance of the modified Au electrode. Good linear responses were achieved in the concentration ranges of 1-200 μg L À 1 and 1-50 μg L À 1 forBi 3 + and Hg 2 + , respectively, and the limits of detection were 0.27 μg L À 1 (Bi 3 + ) and 0.29 μg L À 1 (Hg 2 + ). The interference study results illustrated the high selectivity of the modified electrode for detection of Bi 3 + and Hg 2 + . The proposed SW-ASV method was successfully applied for Bi 3 + and Hg 2 + analyses in different real water samples.

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“…Current also measurable in two electrode arrangements with a small amount of supporting electrolyte [7,8] and high signal to noise ratios [9,10] make microelectrodes efficient devices for applications in trace analysis [11,12] and microanalysis [13,14]. Current responses, however, are relatively low due to the small microelectrode area [15,16] causing problems with measurement of the microelectrode response [17].…”

Section: Introductionmentioning

confidence: 99%

“…In the course of research on microelectrodes, it was shown that if a characteristic dimension of a working electrode decreases to values comparable with the electrode diffusion layer thickness this offers certain advantages for electrochemical measurements [ 1 , 2 ], including high density steady-state diffusion flux of electroactive species towards the microelectrode surface [ 3 , 4 ] and low capacity of the electrical double layer [ 5 , 6 ]. Current also measurable in two electrode arrangements with a small amount of supporting electrolyte [ 7 , 8 ] and high signal to noise ratios [ 9 , 10 ] make microelectrodes efficient devices for applications in trace analysis [ 11 , 12 ] and microanalysis [ 13 , 14 ]. Current responses, however, are relatively low due to the small microelectrode area [ 15 , 16 ] causing problems with measurement of the microelectrode response [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Microelectrode Arrays with Overlapped Diffusion Layers as Electroanalytical Detectors: Theory and Basic Applications

Tomčı́k

2013

Sensors

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This contribution contains a survey of basic literature dealing with arrays of microelectrodes with overlapping diffusion layers as prospective tools in contemporary electrochemistry. Photolithographic thin layer technology allows the fabrication of sensors of micrometric dimensions separated with a very small gap. This fact allows the diffusion layers of single microelectrodes to overlap as members of the array. Various basic types of microelectrode arrays with interacting diffusion layers are described and their analytical abilities are accented. Theoretical approaches to diffusion layer overlapping and the consequences of close constitution effects such as collection efficiency and redox cycling are discussed. Examples of basis applications in electroanalytical chemistry such as amperometric detectors in HPLC and substitutional stripping voltammetry are also given.

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Determination of trace bismuth by under-potential deposition-stripping voltammetry at mesoporous platinum microelectrodes: application to pharmaceutical products

Cited by 10 publications

References 30 publications

Characteristics, Applications and Determination of Bismuth

Characteristics, Applications and Determination of Bismuth

Development of a Sensor Based on Poly(1,2‐diaminoanthraquinone) for Individual and Simultaneous Determination of Mercury (II) and Bismuth (III)

Microelectrode Arrays with Overlapped Diffusion Layers as Electroanalytical Detectors: Theory and Basic Applications

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