Electrochemical determination of mercury: A review

Martín‐Yerga, Daniel; González‐García, María Begoña; Costa-Garcı́a, Agustı́n

doi:10.1016/j.talanta.2013.07.056

Cited by 148 publications

(99 citation statements)

References 129 publications

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“…Some Hg-monitoring applications, without requiring sample pretreatment, depend upon point-of-use sensors that are simple, rapid, stable, reliable, and inexpensive. Accordingly, various methods have been developed such as colorimetric , fluorometric (Wang et al, 2014a), magnetic (Najafi et al, 2013), electrochemical (Martin-Yerga et al, 2013), etc. The electroanalytical techniques have played a major role in simplified testing for Hg and have been approved by many regulatory bodies (EPA, 1996).…”

Section: Introductionmentioning

confidence: 99%

“…The electroanalytical techniques have played a major role in simplified testing for Hg and have been approved by many regulatory bodies (EPA, 1996). In general, many electroanalytical or colorimetric methods rely upon a change in electrical signal following a reaction (amalgamation) of gold (Au) or other precious metals with Hg, either at the electrode or within the sample solution to selectively bind with the target mercury ions (Hg 2+ ) (Welch et al, 2004;Martin-Yerga et al, 2013). The major drawbacks in using Au for sensing Hg are the significant effect of the sample matrix (Botasini et al, 2013) and the structural changes on the sensor material caused by the amalgam formation (Welch et al, 2004;Martin-Yerga et al, 2013), which require some additional chemical, electrochemical, and mechanical pretreatment of the sample (Anandhakumar et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Highly Selective Mercury Detection at Partially Oxidized Graphene/Poly(3,4-Ethylenedioxythiophene):Poly(Styrenesulfonate) Nanocomposite Film-Modified Electrode

et al. 2014

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Partially oxidized graphene flakes (po-Gr) were obtained from graphite electrode by an electrochemical exfoliation method. As-produced po-Gr flakes were dispersed in water with the assistance of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS). The po-Gr flakes and the po-Gr/PEDOT:PSS nanocomposite (po-Gr/PEDOT:PSS) were characterized by Raman spectroscopy, Fourier transform-infrared spectroscopy (FT-IR), UV-Vis spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). In addition, we demonstrated the potential use of po-Gr/PEDOT:PSS electrode in electrochemical detection of mercury ions (Hg 2+ ) in water samples. The presence of po-Gr sheets in PEDOT:PSS film greatly enhanced the electrochemical response for Hg 2+ . Cyclic voltammetry measurements showed a well-defined Hg 2+ redox peaks with a cathodic peak at 0.23V, and an anodic peak at 0.42V. Using differential pulse stripping voltammetry, detection of Hg 2+ was achieved in the range of 0.2-14 µM (R 2 = 0.991), with a limit of detection of 0.19 µM for Hg 2+ . The electrode performed satisfactorily for sensitive and selective detection of Hg 2+ in real samples, and the po-Gr/PEDOT:PSS film remains stable on the electrode surface for repeated use.Therefore, our method is potentially suitable for routine Hg 2+ sensing in environmental water samples.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly Selective Mercury Detection at Partially Oxidized Graphene/Poly(3,4-Ethylenedioxythiophene):Poly(Styrenesulfonate) Nanocomposite Film-Modified Electrode

et al. 2014

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“…The nanoparticle modified electrodes can be divided to metal oxide nanoparticles, carbon material nanoparticles, polymer material nanoparticles and self-assembled nanoparticles [14][15][16]. The nanoparticle-modified electrodes was used for determination of heavy metal ions, such as Hg(II), Cr(VI), As(III), Cd(II) and Pb(II) [17]. In this study, an electrochemical nanosensor based on polyaniline nanoparticles (40-100 nm) modified screen printed carbon electrode has been applied for the determination and analysis of trace of mercury ion Hg 2+ with high sensitivity and selectivity in environmental samples.…”

Section: Introductionmentioning

confidence: 99%

Application of Polyaniline Nanoparticles Modified Screen Printed Carbon Electrode as a Sensor for Determination of Hg(II) in Environmental Samples

Am¹,

Ma²,

Ms³

et al. 2017

J Environ Anal Toxicol

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“…Two excellent reviews have been recently published about the latest advances in electrochemical, mainly voltammetric, determination of mercury [6,7]. Electrochemistry offers sensitivity, simplicity, rapid response and inexpensive instrumentation with miniaturization and portable options.…”

Section: Introductionmentioning

confidence: 99%

Screen-printed electrode based electrochemical detector coupled with ionic liquid dispersive liquid–liquid microextraction and microvolume back-extraction for determination of mercury in water samples

Fernández

Vidal

Martín‐Yerga

et al. 2015

Talanta

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Canals, Agustín Costa-García, Screen-printed electrode based electrochemical detector coupled with Ionic liquid dispersive liquid-liquid microextraction and microvolume back-extraction for determination of Mercury in water samples, Talanta, http://dx.doi.org/10. 1016/j.talanta.2014.11.069 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. 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. AbstractA novel approach is presented, whereby gold nanostructured screenprinted carbon electrodes (SPCnAuEs) are combined with in-situ ionic liquid formation dispersive liquid-liquid microextraction (in-situ IL-DLLME) and microvolume back-extraction for the determination of mercury in water samples.In-situ IL-DLLME is based on a simple metathesis reaction between a watermiscible IL and a salt to form a water-immiscible IL into sample solution.Mercury complex with ammonium pyrrolidinedithiocarbamate is extracted from sample solution into the water-immiscible IL formed in-situ. Then, an ultrasound-assisted procedure is employed to back-extract the mercury into 10 µL of a 4 M HCl aqueous solution, which is finally analyzed using SPCnAuEs. ) and a coefficient of variation of 13% was obtained in both cases. The performance of the proposed methodology was evaluated in real-world water samples including tap water, bottled water, river water and industrial wastewater. Relative recoveries between 95 and 108% were obtained.

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Electrochemical determination of mercury: A review

Cited by 148 publications

References 129 publications

Highly Selective Mercury Detection at Partially Oxidized Graphene/Poly(3,4-Ethylenedioxythiophene):Poly(Styrenesulfonate) Nanocomposite Film-Modified Electrode

Highly Selective Mercury Detection at Partially Oxidized Graphene/Poly(3,4-Ethylenedioxythiophene):Poly(Styrenesulfonate) Nanocomposite Film-Modified Electrode

Application of Polyaniline Nanoparticles Modified Screen Printed Carbon Electrode as a Sensor for Determination of Hg(II) in Environmental Samples

Screen-printed electrode based electrochemical detector coupled with ionic liquid dispersive liquid–liquid microextraction and microvolume back-extraction for determination of mercury in water samples

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