Aspects of Cathodic Stripping Voltammetry at the Hanging Mercury Drop Electrode and in Non-Mercury Disposable Sensors

Fogg, Arnold G.; Zanoni, María Valnice Boldrin; Barros, Aquiles A.; Rodrigues, José A.; Birch, Brian J.

doi:10.1002/1521-4109(200010)12:15<1227::aid-elan1227>3.0.co;2-y

Cited by 8 publications

(3 citation statements)

References 35 publications

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“…and Zn 2? are commonly determined by anodic stripping voltammetry (ASV; Ferreira and Barros 2002;Fogg et al 2000;Ghoneim et al 2000;Lann et al 2003). The only problem faced in performing the Cu 2?…”

Section: Metallothioneins Determination In Troutsmentioning

confidence: 99%

Voltammetric analysis of metallothioneins and copper (II) in fish for water biomonitoring studies

et al. 2010

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An major research area in environmental chemistry is the development of methods for the analysis of biomarkers. Metallothioneins are used as biomarkers in studies of heavy metals exposure in water, because metallothioneins are synthesized and accumulated when organisms are exposed to toxic concentrations of pollutants. In this work, simple and sensitive voltammetric methods were developed for metallothionein and copper (II) determinations in fish liver Lepomis gibbosus. Both analytical methodologies were optimized and applied to samples extracted from individuals previously submitted to sub-lethal toxicological trials with copper sulphate (CuSO 4 ) and cadmium chloride (CdCl 2 ). The obtained results showed that both methods are very precise, sensitive, and involve simple sample preparation processes. Moreover, metallothioneins showed better correlation with the toxic exposure than Cu 2? . To the best of our knowledge, this is the first time that hepatic metallothioneins and Cu 2? contents are voltammetrically determined in order to be compared in their function as heavy metal biological indicators.

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Section: Metallothioneins Determination In Troutsmentioning

confidence: 99%

Voltammetric analysis of metallothioneins and copper (II) in fish for water biomonitoring studies

et al. 2010

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“…Adsorptive stripping voltammetry, AdSV, has thus been widely used for speciation analysis in natural waters. It typically employs a competitive ligand exchange step in which a ligand, L ad , that forms strongly adsorbing complexes with the target metal, is added to the sample, and subsequent measurement of ML ad [11]. Unambiguous quantification of ML ad is essential for metal speciation analysis.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive stripping chronopotentiometry (AdSCP). Part 1: Fundamental features

Leeuwen

Town

2007

Journal of Electroanalytical Chemistry

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“…Mercury electrodes, such as the hanging mercury drop electrode (HMDE) and mercury-film electrode (MFE) due to their excellent electroanalytical performance (high sensitivity and reproducibility, high cathodic hydrogen overpotential), have been widely applied in stripping measurements. 1,2 However, the high toxicity of mercury and its salts is forcing researchers to replace mercury-based electrodes with more environmentally-friendly materials.…”

mentioning

confidence: 99%

Antimony Film Electrode Prepared with the Use of a Reversibly Deposited Mediator (Cd): Fabrication, Characterization and Application

Tyszczuk‐Rotko

Metelka

Vytřas

2016

J. Electrochem. Soc.

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An antimony film electrode was prepared ex situ using a reversibly deposited mediator and applied to a model of metal ions (Hg(II)) by anodic stripping voltammetry. The electrochemical method for antimony film formation is based on a co-deposition of a metal of interest (Sb), with a reversibly deposited mediator (Cd), and then further on an oxidation of cadmium, with additional deposition of antimony by the appropriate potential. This serves to increase the density of concentrations of Sb atoms, promoting antimony film growth, and consequently helps to improve the electrochemical properties of the electrode. The structural and chemical information about antimony film electrodes prepared without and with a mediator were derived from data obtained via optical microscope, AFM and XPS analysis. Finally, the practical analytical application of the antimony film electrode (prepared with said mediator) was successfully tested by measuring the level of Hg(II) concentration in the certified reference material (1641d) and Vistula river water samples.

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Aspects of Cathodic Stripping Voltammetry at the Hanging Mercury Drop Electrode and in Non-Mercury Disposable Sensors

Cited by 8 publications

References 35 publications

Voltammetric analysis of metallothioneins and copper (II) in fish for water biomonitoring studies

Voltammetric analysis of metallothioneins and copper (II) in fish for water biomonitoring studies

Adsorptive stripping chronopotentiometry (AdSCP). Part 1: Fundamental features

Antimony Film Electrode Prepared with the Use of a Reversibly Deposited Mediator (Cd): Fabrication, Characterization and Application

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