The influence of Triton-X-100 surfactant on the electroanalysis of lead and cadmium at carbon film electrodes – An electrochemical impedance study

Gouveia‐Caridade, Carla; Brett, Christopher M.A.

doi:10.1016/j.jelechem.2006.05.005

Cited by 20 publications

(7 citation statements)

References 26 publications

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“…In [21][22][23], carbon film electrodes prepared from electrical resistors [25,26] were employed for this purpose. They are suitable for preparation of robust disposable or short-term-use sensors [27][28][29][30][31] and biosensors [21][22][23][32][33][34]. These electrodes have similar electroanalytical properties to glassy carbon (GC) [25].…”

Section: Introductionmentioning

confidence: 99%

Characterisation of poly(neutral red) modified carbon film electrodes; application as a redox mediator for biosensors

Pauliukaitė

Ghica

Bârsan

et al. 2007

J Solid State Electrochem

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The polymer redox mediator, poly(neutral red) (PNR), has been synthesised and characterised electrochemically to investigate the best electropolymerisation and mediation conditions for application in enzyme biosensors and to clarify the mechanism of action. Neutral red was electropolymerised by potential cycling on carbon film electrode substrates by allowing the monomer to be oxidised during the full 20 cycles of polymerisation or reducing the positive limit of the potential window after the first 2 cycles to impede monomer oxidation with a view to obtaining longer polymer chains and a lesser degree of branching. Comparison was made with glassy carbon substrates. The PNR films on carbon film electrodes were characterised using cyclic voltammetry and electrochemical impedance spectroscopy, as well as in glucose biosensors prepared with PNR. Glucose oxidase enzyme was immobilised by encapsulation in silica sol-gel and compared with that obtained by cross-linking with glutaraldehyde. The biosensors were evaluated by chronoamperometry in 0.1 M phosphate buffer saline solution, pH 7.0, and showed evidence of electron transfer between the enzyme cofactor flavin adenine dinucleotide and PNR dissolved in the enzyme layer competing with PNR-mediated electrochemical degradation of H 2 O 2 formed during the enzymatic process.

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Section: Introductionmentioning

confidence: 99%

Characterisation of poly(neutral red) modified carbon film electrodes; application as a redox mediator for biosensors

Pauliukaitė

Ghica

Bârsan

et al. 2007

J Solid State Electrochem

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“…A number of chemically modified electrodes were developed for the detection of heavy metals based on Nafion films. [528][529][530][531] Originally used to protect mercury-film electrodes, the interest for Nafion in environmental applications has seen a resurgence with the development of bismuth film electrodes. [532][533][534][535][536] Electrodes modified with conducting polymers have also been used for the heavy metals detection.…”

Section: Accumulation and Permeability Sensorsmentioning

confidence: 99%

Electrode Materials (Bulk Materials and Modification)

Walcarius

Etienne

Herzog

et al. 2014

Environmental Analysis by Electrochemical Sensors and Biosensors

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“…In potentiometric stripping analysis using mercury film electrode, adding some surfactants can play effectual function for increasing detection sensibility and avoiding electrode pollution. 24 In this work, Triton-X-100, selected through experiments, was the most suitable surfactant for determination of calcium and magnesium. The optimal amounts of adding Triton-X-100 were 50 mg L -1 in determination of calcium and 5 mg L -1 in determination of magnesium.…”

Section: The Effect Of Triton X-100 Surfactantmentioning

confidence: 99%

Determination of Magnesium and Calcium in Biological Samples by Potentiometric Stripping Analysis

Zhou²,

Wang

et al. 2010

J Chinese Chemical Soc

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A new and simple method for determination of calcium and magnesium in human plasma and hair samples was investigated by using potentiometric stripping analysis. The replacement reactions between Ca2+ and Zn‐EGTA (Ethylene glycol‐bis‐(2‐aminoethyl)tetraacetic acid) complex and between Mg2+ and Zn‐EDTA (Ethylenediamine tetraacetic acid disodium salt) complex were utilized. The determinations were carried out in NH4Cl‐NH3 buffer solutions of pH 9.54 for calcium and of pH 10.18 for magnesium, respectively. Potential and time data were digitally converted into dtdE−1, and E was plotted vs. dtdE−1. Quantitative analysis was carried out by the method of standard additions. Linearity for determination of magnesium was found to be in the range of 6∼120 μg L−1 with a correlation coefficient of 0.997 (n = 6); and for determination of calcium in the range of 10∼250 μg L−1 with a correlation coefficient of 0.995 (n = 6). The detection limit of 4 μ gL−1 was found for both magnesium and calcium determination. This proposed method has been used for determining calcium and magnesium in biological samples with good recoveries and well accord with the results of Inductively Coupled Plasma‐Atomic Emission Spectrometry (ICP‐AES).

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The influence of Triton-X-100 surfactant on the electroanalysis of lead and cadmium at carbon film electrodes – An electrochemical impedance study

Cited by 20 publications

References 26 publications

Characterisation of poly(neutral red) modified carbon film electrodes; application as a redox mediator for biosensors

Characterisation of poly(neutral red) modified carbon film electrodes; application as a redox mediator for biosensors

Electrode Materials (Bulk Materials and Modification)

Determination of Magnesium and Calcium in Biological Samples by Potentiometric Stripping Analysis

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