Determination of arsenic in the presence of copper by adsorptive stripping voltammetry using pyrrolidine dithiocarbamate or diethyl dithiophosphate as chelating-adsorbent agents. Effect of CPB on the sensitivity of the method

Núñez, C.; Arancibia, Veróníca; Gómez, Marisol

doi:10.1016/j.microc.2015.11.047

Cited by 9 publications

(11 citation statements)

References 16 publications

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“…One of the main reasons for modification in stripping analysis is to improve the selectivity and sensitivity of the electrochemical measurements by preconcentrating the target metal ions from dilute solutions on the electrode surface using suitable reagents. Determination of Pb(II) ions by stripping methods has been reported in the literature and they use mercury based electrodes such as Dropping Mercury Electrode (DME) and Hanging Mercury Dropping Electrode (HMDE) , Bismuth film electrodes , Zeolites , carbon paste electrodes , caron nanotubes and conducting polymers . In the case of mercury based electrodes like DME, HMDE and mercury film electrodes, they are considered as toxic and hence the risk associated with the use of Hg is encountered.…”

Section: Introductionmentioning

confidence: 86%

Differential Pulse Anodic Stripping Voltammetric Determination of Lead (II) Using Poly Xylenol Orange Modified Electrode

Manikandan

Narayanan

2016

Electroanalysis

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In this work a method for sensitive anodic stripping voltammetric determination of Pb(II) ions using a poly xylenol orange film modified electrode (PXOFME) has been proposed. Poly xylenol orange film (PXOF) was formed on a paraffin impegrenated graphite electrode (PIGE) using electro polymerization method by scanning the potential between −0.5 V to 1.3 V, at a scan rate of 50 mV/s for 30 segments in 0.1 M phosphate buffer solution (PBS) of pH 7. The PXOFME was characterized by scanning electron microscopy (SEM), ATR‐IR spectroscopy, cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS). The modified electrode has been used to develop a sensitive method for the determination of Pb(II) ions by anodic stripping voltmmetry (ASV). The PXOFME was used to preconcentrate Pb(II) ions through complexation, the complexed metal ions were reduced electrochemically and then stripped anodically from the surface of the electrode. A linear range of 5 μg/L to 413 μg/L with a limit of detection (S/N=3) of 1.6 μg/L was observed for the determination of Pb(II) ions. The method was applied to lead determination in sea water and tap water samples and the results were found to be satisfactory.

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Section: Introductionmentioning

confidence: 86%

Differential Pulse Anodic Stripping Voltammetric Determination of Lead (II) Using Poly Xylenol Orange Modified Electrode

Manikandan

Narayanan

2016

Electroanalysis

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“…This would not only minimize errors but also avoid the collection and transportation of water samples to a centralized laboratory for analysis [1,2,4]. Electrochemical analysis is particularly useful due to its portability, relative low-cost, and its capability for speciation [9,10]. This last characteristic is quite important, considering that arsenic toxicity and bioavailability depend on the kind of prevalent chemical species [10].…”

Section: Introductionmentioning

confidence: 99%

“…Electrochemical analysis is particularly useful due to its portability, relative low-cost, and its capability for speciation [9,10]. This last characteristic is quite important, considering that arsenic toxicity and bioavailability depend on the kind of prevalent chemical species [10]. As(III) J o u r n a l P r e -p r o o f Journal Pre-proof and As(V) exhibit different electrochemical behavior.…”

Section: Introductionmentioning

confidence: 99%

“…As(III) J o u r n a l P r e -p r o o f Journal Pre-proof and As(V) exhibit different electrochemical behavior. While As(III) can be electrochemically reduced, As(V) is generally considered to be electroinactive [6,[9][10][11][12][13][14]. Accordingly, the determination of total arsenic content requires the use of chemical reagents to reduce As(V) to As(III) [6,[9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Mechanistic analysis of the cathodic stripping square-wave voltammetric response of the copper‑arsenic system at a mercury electrode

Avila

Gómez

Heredia

et al. 2021

Journal of Electroanalytical Chemistry

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…Presently, numerous detection techniques have been established to detect and quantify As(III), such as atomic absorption spectrometry (AAS) [8], atomic fluorescence spectrometry (AFS) [9], and inductively coupled plasma mass spectrometry (ICP-MS) [10]. However, these techniques are unable to detect individual arsenic species and must be used with an upstream separation scheme.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Detection of Arsenite Using a Silica Nanoparticles-Modified Screen-Printed Carbon Electrode

et al. 2020

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Arsenic poisoning in the environment can cause severe effects on human health, hence detection is crucial. An electrochemical-based portable assessment of arsenic contamination is the ability to identify arsenite (As(III)). To achieve this, a low-cost electroanalytical assay for the detection of As(III) utilizing a silica nanoparticles (SiNPs)-modified screen-printed carbon electrode (SPCE) was developed. The morphological and elemental analysis of functionalized SiNPs and a SiNPs/SPCE-modified sensor was studied using field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), and Fourier transform infrared spectroscopy (FTIR). The electrochemical responses towards arsenic detection were measured using the cyclic voltammetry (CV) and linear sweep anodic stripping voltammetry (LSASV) techniques. Under optimized conditions, the anodic peak current was proportional to the As(III) concentration over a wide linear range of 5 to 30 µg/L, with a detection limit of 6.2 µg/L. The suggested approach was effectively valid for the testing of As(III) found within the real water samples with good reproducibility and stability.

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Determination of arsenic in the presence of copper by adsorptive stripping voltammetry using pyrrolidine dithiocarbamate or diethyl dithiophosphate as chelating-adsorbent agents. Effect of CPB on the sensitivity of the method

Cited by 9 publications

References 16 publications

Differential Pulse Anodic Stripping Voltammetric Determination of Lead (II) Using Poly Xylenol Orange Modified Electrode

Differential Pulse Anodic Stripping Voltammetric Determination of Lead (II) Using Poly Xylenol Orange Modified Electrode

Mechanistic analysis of the cathodic stripping square-wave voltammetric response of the copper‑arsenic system at a mercury electrode

Electrochemical Detection of Arsenite Using a Silica Nanoparticles-Modified Screen-Printed Carbon Electrode

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