A Thick-Film Carbon-Containing Electrode Modified with Formazan for Determining Copper, Lead, Cadmium, and Zinc

Stozhko, N. Yu.; Lipunova, G. N.; Maslakova, T. I.; Aleshina, L. V.; Брайнина, Х. З.

doi:10.1023/b:janc.0000014748.34212.79

Cited by 14 publications

(6 citation statements)

References 7 publications

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“…Thus the electrochemical behaviour of seven hetarylformazans used as components of carbon-containing inks of thick-film screenprinted electrodes was studied. 48,49 The compositions of complex compounds formed on the electrode surface and their stability constants were determined. It was shown, for example, that 1-(2chlorophenyl)-3-phenyl-5-(6-methyl-4-oxo-3,4-dihydropyrimidin-2-yl)formazan (28) provides high sensitivity of graphite-containing modified electrodes, low detection limits with respect to Cu(II), Pb(II), Cd(II) and Zn(II) ions and high reproducibility of the results of analysis.…”

Section: Synthesis and Properties Of Formazan Derivativesmentioning

confidence: 99%

Formazans and their metal complexes

Sigeikin¹,

Lipunova²,

Pervova³

2006

Russ. Chem. Rev.

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Section: Synthesis and Properties Of Formazan Derivativesmentioning

confidence: 99%

Formazans and their metal complexes

Sigeikin¹,

Lipunova²,

Pervova³

2006

Russ. Chem. Rev.

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“…In determining Cu 2+ , Pb 2+ , Cd 2+ , and Zn 2+ , 1-(o-chlorophenyl)-3-phenyl-5-(6-methyl-4-hydroxy-pyrimidinyl-2)formazan [19,20] was used as a modifier of TGEs. TGEs modified with 2,3-diaminonaphthalene [21], nitroso R salt [22], pyrocatechol [23], 1,10-phenanthroline [24], and 1-(o-tolyl)-3-methyl-5-(1-benzylbenzimidazolyl-2)formazan [25] were used for determining Se 4+ , Co 2+ , Fe 3+ , Fe 2+ , and Mn 2+ , respectively.…”

Section: Mementioning

confidence: 99%

Preconcentration Versions and New Sensors in Stripping Voltammetry

Stozhko

2005

J Anal Chem

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Papers of Russian authors on the development of thick-film electrodes fabricated by screen-printing technology and their use in inorganic voltammetric analysis are surveyed. Procedures for determining elements are classified by the version of analyte preconcentration on thick-film electrodes of different types. The advantages of new electrodes over the known ones in determining different ions are discussed. Stripping voltammetry Preconcentration E ECh ACh Ä AECh Measurement E Reactions : A, adsorption ; Ch, chemical E, electrochemical ;

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“…Modified electrodes with polymeric films formed by electropolymerization of organic monomers have caused great interest in electrochemical research [2,3]. The preparation of modified electrodes using polymeric films is simple.…”

Section: Introductionmentioning

confidence: 99%

Surface properties of sensors based on aminophenol-polymerized film

Coelho

Melo

Rezende

et al. 2011

J Solid State Electrochem

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In this work, carbon electrodes modified with aminophenols were developed for the production of pesticides biosensors based on acetylcholinesterase. The polymers were potentiodynamically deposited on a graphite electrode surface by the oxidation of monomers, 2-aminophenol, 3-aminophenol and 4-aminophenol. The electrochemical behaviour and surface analysis of the electrodes modified by polyaminophenols non-immobilized and immobilized on acetylcholinesterase were studied by cyclic voltammetry, electrochemical impedance spectroscopy and atomic force microscopy. Roughness values obtained for graphite electrodes modified with poly(4-aminophenol) and poly(4-aminophenol)/acetylcholinesterase were 174 and 86 nm, respectively. The acetylcholinesterase enzyme was immobilized on a graphite and a graphite modified with poly(4-aminophenol), and these electrodes were coupled in the flow system. Potentiometric response due to hydrogen ions generated by an enzymatic system in the presence of acetylcholine chloride substrate was evaluated. The results showed that the graphite/poly(4-aminhophenol) sensor presents high sensitivity to hydrogen ions when compared with other graphite/polyaminophenols sensors. The biosensor coupled in a continuous flow system was employed for the detection of dichlorvos. The detection and quantification limits were 0.8 and 2.4 μmol L −1 dichlorvos, respectively. This sensor reveals an efficient and promising material for biomolecules immobilization.

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A Thick-Film Carbon-Containing Electrode Modified with Formazan for Determining Copper, Lead, Cadmium, and Zinc

Cited by 14 publications

References 7 publications

Formazans and their metal complexes

Formazans and their metal complexes

Preconcentration Versions and New Sensors in Stripping Voltammetry

Surface properties of sensors based on aminophenol-polymerized film

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