Ultrasensitive modified electrode based on poly(1H-pyrrole-1-hexanoic acid) for Pb(II) detection

Buica, George‐Octavian; Lazar, Ioana-Georgiana; Saint‐Aman, Eric; Tecuceanu, Victorița; Dumitriu, Cristina; Ivanov, Alexandru Anton; Stoian, Andrei Bogdan; Ungureanu, Eleonora‐Mihaela

doi:10.1016/j.snb.2017.02.112

Cited by 25 publications

(7 citation statements)

References 39 publications

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“…In some cases, lower content of carvacrol in complicated matrices makes an emergency task to the preliminary application of preconcentration and separation procedures [12]. As compared with above mentioned methods, which typically require time-consuming and complex sample pretreatment procedure involving separation, extraction, and adsorption, electrochemical sensors have been documented as more authoritative tools [13][14][15][16]. The advantages of electrochemical sensors are the possibility of miniaturization and portability, selectivity, sensitivity, a wide linear range, minimal space and power requirement and cost-effective instrumentation.…”

Section: Introductionmentioning

confidence: 99%

Carvacrol electrochemical reaction characteristics on screen printed electrode modified with La2O3/Co3O4 nanocomposite

Mohammadi

Beitollahi

Rohani

et al. 2019

J. Electrochem. Sci. Eng.

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Electrochemical characteristics of carvacrol were investigated on a screen-printed electrode (SPE) modified with La2O3/Co3O4 nanocomposite by using voltammetric techniques, which displayed a well-defined peak for sensitive carvacrol determination in phosphate buffer solution (PBS) at pH 7.0. La2O3/Co3O4 nanoparticles demonstrated suitable catalytic activity for carvacrol determination by differential pulse voltammetry (DPV) technique. Besides, determination of carvacrol in a real samples was recognized in the light of electrochemical findings and a validated voltammetric technique for quantitative analysis of carvacrol in a real formulation was proposed. The DPV peak currents were found to be linear in the concentration range of 10.0 to 800.0 μM. The limit of detection (LOD) was found to be 1.0 μM.

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Section: Introductionmentioning

confidence: 99%

Carvacrol electrochemical reaction characteristics on screen printed electrode modified with La2O3/Co3O4 nanocomposite

Mohammadi

Beitollahi

Rohani

et al. 2019

J. Electrochem. Sci. Eng.

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“…Voltammetric determinations with the modified electrodes were performed through a chemical accumulation step at open circuit followed by anodic stripping using differential pulse voltammetry (DPV) [29,31,32]. The DPV curves were recorded at 20 mV s −1 with an amplitude of 25 mV and 0.5 s pulse period.…”

Section: Electrode Preparationmentioning

confidence: 99%

Improving the Voltammetric Determination of Hg(II): A Comparison Between Ligand-Modified Glassy Carbon and Electrochemically Reduced Graphene Oxide Electrodes

Raicopol

Pandele

Dascalu

et al. 2020

Sensors

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A new thiosemicarbazone ligand was immobilized through a Cu(I)-catalyzed click reaction on the surface of glassy carbon (GC) and electrochemically reduced graphene oxide (GC-ERGO) electrodes grafted with phenylethynyl groups. Using the accumulation at open circuit followed by anodic stripping voltammetry, the modified electrodes showed a significant selectivity and sensibility for Hg(II) ions. A detection limit of 7 nM was achieved with the GC modified electrodes. Remarkably, GC-ERGO modified electrodes showed a significantly improved detection limit (0.8 nM), sensitivity, and linear range, which we attribute to an increased number of surface binding sites and better electron transfer properties. Both GC and GC-ERGO modified electrodes proved their applicability for the analysis of real water samples.

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“…Higher selectivity and sensitivity compared to other methods [ 26 , 27 ], low cost, and simplicity of use are a few characteristics of electrochemical sensors based on chemically modified electrodes. These sensors can be included in portable devices, allowing in situ monitoring of the analyzed samples [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical System for Field Control of Hg2+ Concentration in Wastewater Samples

Tenea

Dinu

Buica

et al. 2023

Sensors

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The paper presents the validation of an electrochemical procedure for on-site Hg2+ ions determination in wastewater samples using a modified carbon screen-printed electrode (SPE) with a complexing polymeric film based on poly(2,2′-(ethane-1,2-diylbis((2-(azulen-2-ylamino)-2-oxoethyl)azanediyl))diacetic acid) (polyL). Using metal ions accumulation in an open circuit followed by anodic stripping voltammetry, the SPE-polyL electrode presents a linear range in the range of 20 µg/L to 150 µg/L, with a limit of detection (LOD) = 6 µg/L, limit of quantification (LOQ) = 20 µg/L, and an average measurement uncertainty of 26% of mercury ions. The results obtained in situ and in the laboratory using the SPE-polyL modified electrode were compared with those obtained by the atomic absorption spectrometry coupled with the cold vapor generation standardized method, with the average values indicating excellent recovery yields.

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Ultrasensitive modified electrode based on poly(1H-pyrrole-1-hexanoic acid) for Pb(II) detection

Cited by 25 publications

References 39 publications

Carvacrol electrochemical reaction characteristics on screen printed electrode modified with La2O3/Co3O4 nanocomposite

Carvacrol electrochemical reaction characteristics on screen printed electrode modified with La2O3/Co3O4 nanocomposite

Improving the Voltammetric Determination of Hg(II): A Comparison Between Ligand-Modified Glassy Carbon and Electrochemically Reduced Graphene Oxide Electrodes

Electrochemical System for Field Control of Hg2+ Concentration in Wastewater Samples

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