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Modification of electrodes with adsorbed polyamino acids. Part 1. Cathodic stripping voltammetric determination of copper(II) at a hanging mercury drop electrode using adsorptive accumulation on an adsorbed layer of poly-L-histidine
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In this paper, the application of a hanging mercury drop electrode, modified by adsorption of poly-L-histidine, to the determination of CuII in aqueous solutions has been studied.Abstract:
The application of a hanging mercury drop electrode, modified by adsorption of poly-L-histidine, to the determination of CuII in aqueous solutions has been studied. Selective and rapid pre-concentration of CuII on the poly-L-histidine film was observed, even from dilute and quiescent solutions. Copper(II) was determined by differential-pulse adsorptive stripping voltammetry between 5 × 10–9 and 4 × 10–7M after a 2-min accumulation time, using the reduction peak of its complex, at –0.4 V versus an Ag-AgCl reference electrode, obtained in acetate buffer solution of pH 4.5. No significant interference was observed from 1 × 10–6M levels of ethylenediaminetetraacetic acid, chromium(III), lead(II), nickel(II), cadmium(II) and manganese(II).read more
Citations
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Tutorial review. Voltammetric determination of trace metals and organics after accumulation at modified electrodes
TL;DR: In this article, the applications of chemically modified electrodes (CMEs) to the determination of trace amounts of metals and organic analytes are discussed, and the common feature of the CMEs reviewed is that prior to the voltammetric determination step the analyte is collected or accumulated onto the electrode.
Journal ArticleDOI
Electrochemical Metal Ion Sensors. Exploiting Amino Acids and Peptides as Recognition Elements
TL;DR: Amino acids and peptides are known to bind metal ions, in some cases very strongly as discussed by the authors, and there are only a few examples of exploiting this binding in sensors.
Journal ArticleDOI
Peptide Modified Electrodes as Electrochemical Metal Ion Sensors
Edith Chow,J. Justin Gooding +1 more
TL;DR: In this paper, the use of peptides and amino acids as the recognition element of electrochemical sensors for metal ion detection is discussed and the application of peptide modified electrodes for detecting metals is reviewed and finally challenges and future prospects are outlined.
Journal ArticleDOI
Voltammetric determination of 4-nitrophenol at a lithium tetracyanoethylenide (LiTCNE) modified glassy carbon electrode.
Rita de Cássia Silva Luz,Flavio Santos Damos,Adriano Bof de Oliveira,Johannes Beck,Lauro T. Kubota +4 more
TL;DR: The reduction of 4-nitrophenol (4-NP) has been carried out on a modified glassy carbon electrode using cyclic and differential pulse voltammetry (DPV) and the proposed sensor presented good repeatability and was applied for 4-NP determination in water samples.
Journal ArticleDOI
Poly(glutamic acid) nanofibre modified glassy carbon electrode: Characterization by atomic force microscopy, voltammetry and electrochemical impedance
Daniela P. Santos,Maria Valnice Boldrin Zanoni,Márcio F. Bergamini,Ana-Maria Chiorcea-Paquim,Victor C. Diculescu,Ana-Maria Oliveira Brett +5 more
TL;DR: In this article, a modified glass carbon electrode with poly(glutamic acid) acid films prepared using three different procedures: glutamic acid monomer electropolymerization (MONO), evaporation of poly(GLUTAMA) (PAG), and evapolation of a mixture of polyglutam acid/glutaraldehyde (PAGA/GLU).
References
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Electrostatic Binding of Metal Complexes to Electrode Surfaces Coated with Highly Charged Polymeric Films
Noboru Oyama,Fred C. Anson +1 more
TL;DR: In this article, it is shown that the surface chemistry of graphite electrodes with polymers bearing charged ionic groups produces surfaces which strongly bind multiply-charged metal complexes bearing charges opposite to that on the attached ionic polymer, making it possible for virtually any desired metal ion can be attached in large quantities to electrode surfaces by coordinating the metal ion with ligands that produce a multiplycharged complex ion.
Journal ArticleDOI
Electroanalysis with chemically modified electrodes
TL;DR: In this paper, a modification of electrodes par depots de films de copolymeres (polyvinylpyridine/vinylferrocene and polyvinylbipyridine /vinyelferrocenes) is presented, which permet des electroanalyses d'ions metalliques avec une bonne sensibilite et selectivite.
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Polymeric ligands as anchoring groups for the attachment of metal complexes to graphite electrode surfaces
Noboru Oyama,Fred C. Anson +1 more
Journal ArticleDOI
The Association of Imidazole with the Ions of Zinc and Cupric Copper1a,b,c
Journal ArticleDOI
Chemical preconcentration and determination of copper at a chemically modified carbon−paste electrode containing 2,9-dimethyl-1, 10-phenanthroline
TL;DR: Avantages de cette methode par rapport aux methodes a redissolution, on peut faire des voltammetries classiques as discussed by the authors, a.k.a.
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