Electroanalysis (Electroanalysis )

Publisher: John Wiley and Sons

Journal description

Electroanalysis is an international journal of high repute covering all branches of electroanalytical chemistry including both fundamental and application papers as well as reviews dealing with analytical voltammetry potentiometry new electrochemical sensors and detection schemes and practical applications. Electroanalysis provides the most comprehensive coverage of the field and is the number one source of information on electroanalytical chemistry. Serving as a vital communication link between the research labs and the field Electroanalysis helps you to quickly adapt the latest innovations into practical clinical environmental and industrial applications. Kurztext Electroanalysis hat sich in den letzten Jahren zu einer Zeitschrift mit international hohem Ansehen entwickelt. Sie befaßt sich mit allen Bereichen der elektro-analytischen Chemie - sowohl mit der Grundlagenforschung als auch mit der Anwendung - und ist für ihre Leser die komplette und unerläßliche ausführlichen und Informationsquelle in ihrem Fachgebiet. Readers Chemists biologists physicists analysts in academia and industry interested in electroanalytical techniques New: 18 issues per year!

Current impact factor: 2.82

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2011 Impact Factor 2.872

Additional details

5-year impact 2.86
Cited half-life 6.10
Immediacy index 0.46
Eigenfactor 0.02
Article influence 0.63
Website Electroanalysis website
Other titles Electroanalysis (New York, N.Y.: Online)
ISSN 1521-4109
OCLC 44042872
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

John Wiley and Sons

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    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • See Wiley-Blackwell entry for articles after February 2007
    • On personal web site or secure external website at authors institution
    • Deposit in institutional repositories is not allowed
    • JASIST authors may deposit in an institutional repository
    • Non-commercial
    • Pre-print must be accompanied with set phrase (see individual journal copyright transfer agreements)
    • Published source must be acknowledged with set phrase (see individual journal copyright transfer agreements)
    • Publisher's version/PDF cannot be used
    • Articles in some journals can be made Open Access on payment of additional charge
    • 'John Wiley and Sons' is an imprint of 'Wiley'
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Involvement of hexapeptides composed of lysine (Lys6), arginine (Arg6) or histidine (His6) in the catalytic hydrogen evolution reaction (CHER) was studied. Using McIlvaine buffer, we changed the concentration of citric acid (proton donor in the CHER) either (a) by changing the buffer concentration at constant pH or (b) by changing the pH at constant buffer concentration. These two approaches showed almost the same catalytic behavior of Lys6 and Arg6 but strikingly different ones in the case of His6. The results suggested that at neutral pH His residue is much weaker catalyzer than those of Lys or Arg.
    Electroanalysis 02/2015;
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    ABSTRACT: This article describes the design, fabrication and characterization of a compact and deployable heavy metal analyzer. The system is autonomous and its microcontroller enables the configuration of its four micropumps and the application of different electroanalytical techniques. A range of prototyping and manufacturing techniques have been used in the fabrication of the instrument, including laser sintering, milling, and laser engraving. We present the electrochemical characterization of the system, and provide preliminary results obtained in the determination of Cu and Zn in different waters. The only sample treatment consists in its 1 : 2 dilution in pH 5.6 acetate buffer. Detection limits of 2.2 and 3.8 ppb were found for Cu and Zn, respectively.
    Electroanalysis 02/2015;
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    ABSTRACT: An enzyme-based amperometric biosensor was developed for the determination of the lysine content of pharmaceutical products, food and feed samples. Lysine decarboxylase (EC 4.1.1.18) from Bacterium cadaveris was coupled with diamine oxidase (EC 1.4.3.6) from Pisum sativum and horseradish peroxidase (EC 1.11.1.7). The enzymes were co-immobilized on a graphite electrode with an Os polymer. The biosensor worked in flow injection analysis system (FIA). Optimal working conditions were pH 7.0 and −50 mV potential vs. Ag/AgCl. The linear measuring range was 0.005–0.500 mM. Different pharmaceutical products and feed samples were analysed by the lysine biosensor and by HPLC method for validation.
    Electroanalysis 02/2015;
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    ABSTRACT: An alizarin based voltammetric pH sensor is introduced. This device is fabricated by screen printing the alizarin, which is a pH-sensitive redox compound, mixed with carbon ink onto the carbon aluminum (aluminum foil coated with carbon paste). This electrode shows a Nernst response to both the buffered and unbuffered media, with a potential shift by 55.8 mV/pH unit and a working range up to pH 10. This approach suggests a disposable, reproducible, low-cost method for pH sensing with the possibility of miniaturization. A further study of this type of sensor coated with nafion reveals a possible method to expand the working range and improve the stability.
    Electroanalysis 02/2015;
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    ABSTRACT: Electrochemical detection of NO generated from chemical donors is reported. Because NO is an important biological messenger, many donor sources and detection methods have been developed. Few reports have characterized NO donors using electrochemistry despite electrochemical techniques being sensitive and selective. Here, a CMOS platinum microelectrode array is interfaced with a microfluidic device for the electrochemical analysis of NO from (Z)-1-[N-(2-aminoethyl)-N-(2-ammonioethyl)amino]diazen-1-ium-1,2-diolate (DETA/NO). The donor parent amine fouls the electrode, resulting in substantial signal loss, but an electrochemical cleaning method was developed that substantially reduces fouling and allows detection of NO between 90 nM and 1 µM.
    Electroanalysis 02/2015;
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    ABSTRACT: We propose a calibration-free resistive pulse sensing (RPS) methodology based on nanopipets to follow the size and concentration changes of nanoparticles during size-selective separation processes. The study was performed with monodisperse latex nanoparticles and their mixtures that were subjected to separation procedures such as filtration through track-etch membranes of various pore diameters as well as centrifugal filtration. The RPS measurements were found to be suitable to determine both the recovery of the nanoparticles after filtration as well as subtle changes in their size distribution. Filtration through track-etch membranes preserved the mean size of the nanoparticles while their recovery was affected by the size of the pore and coexistence of larger nanoparticle fractions in the sample. Centrifugal filtration resulted in the appearance of aggregates.
    Electroanalysis 02/2015;
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    ABSTRACT: Thirty years ago one of us introduced a central approximation according to which the regular arrays behaviors could be estimated based on those of arrays of cylindrical unit cells with the same relative surface area of their central disks for the insulating section. This work examines and validates this approximation on the basis of 3D-simulations of Brownian particles motion for inlaid or recessed electroactive disks as well as for protruding cylindrical electrodes. The approximation is perfectly adequate for predicting the behavior of realistic experimental arrays and is valid within a few percent even in extreme situations when adjacent electroactive sections are almost touching.
    Electroanalysis 02/2015;
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    ABSTRACT: The impact of microwave irradiation on the structure and electrochemistry of monodispersed palladium nanoparticles is reported for the first time. When compared to the Pd that was not subjected to microwave treatment, the microwaved Pd nanocatalyst gave higher electrochemical active surface area (EASA≈67 m2 g−1), aggregation/uniformity of dispersion, showed higher amount of the palladium oxides, and showed remarkable electrocatalytic behaviour towards ethanol oxidation reaction in alkaline medium (in terms of high mass activity, stability and fast reaction kinetics). The remarkable microwave-induced properties on the Pd catalyst promise to revolutionize the use of microwave for catalyst activation for enhanced heterogeneous catalysis and fuel cell chemistry.
    Electroanalysis 02/2015;
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    ABSTRACT: Direct electrochemical measuring technique for estimation of the ascorbic acid (AA) content of freshly cut yellow pepper fruits without special sample treatment was worked out. Dialysis membrane modified glassy carbon electrode combined with short time chronoamperometric measuring method was employed to eliminate the interfering effect of tortuosity and electrode fouling. Viscosity change inside the diffusion layer was taken in account. AA content of the fruit was found to be 114.5 mg/100 g, and it is shown that the metal ions derived from iron blade are able to accelerate the oxidation process significantly. Classical iodometric titration was applied as a reference method.
    Electroanalysis 02/2015;
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    ABSTRACT: Impedancemetric NO sensors were fabricated, comprising yttria stabilized zirconia disc with thick film Sm0.9Sr0.1CoO3−δ electrodes of different design. Impedance measurements were performed at 600–800 °C for frequencies 0.01 Hz–100 kHz, in gas mixtures with 0–400 ppm of NO. The smaller arc on Nyquist plots can be associated with solid electrolyte-electrode interfacial phenomena, while the bigger one to the perovskite electrode reactions. As NO concentration increases, the bigger arc decreases and its maximum shifts toward higher frequencies. Both the sensitivity and the applicable NO concentration range were found to be dependent on the sensor design, temperature and chosen frequency.
    Electroanalysis 02/2015;
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    ABSTRACT: The design and performance of potentiometric multisensor system made in solid-contact technology is described. Both, the measuring electrodes as well as the reference electrode are in a compact cell. The system allows for simultaneous measurement of various ions. The characteristics of the electrodes for Na+, K+ and Ca2+ ions were determined using the designed system and compared with ISEs of the same membrane composition in classical system. The potentiometric cells were used to determine the concentration of the ions in synthetic and real human sweat samples. The obtained results for synthetic samples were compared to the expected values and for collected real sample of sweat were compared to the results obtained by flame photometry (Na+, K+) and by AAS (Ca2+).
    Electroanalysis 02/2015;
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    ABSTRACT: The control of bioelectrocatalytic processes by external stimuli for the indirect detection of non-redox active species was achieved using an esterase and a redox enzyme both integrated within a redox hydrogel. The poly(vinyl)imidazole Os(bpy)2Cl hydrogel displays pH-responsive properties. The esterase catalysed reaction leads to a local pH decrease causing protonation of imidazole moieties thus increasing hydrogel solvation and mobility of the tethered Os-complexes. This is the key step to enable improved electron transfer between an aldehyde oxidoreductase and the polymer-bound Os-complexes. The off-on switch is further integrated in a biofuel cell system for self-powered signal generation.
    Electroanalysis 02/2015;
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    ABSTRACT: Potentiodynamic electrochemical impedance spectroscopy makes available, from cyclic potential scan combined with frequency response acquisition, a set of potentiodynamic profiles of characteristic electrochemical variables in addition to a voltammetric profile. Especially informative in the underpotential deposition is the double layer capacitance profile which characterises alterations of the interface status during the potential scan. Potentiodynamic profiles of charge transfer resistance and Warburg coefficient present complementary information about faradaic part of the electrochemical response. Profiles of adsorption capacitance are available in the reversible UPD.
    Electroanalysis 02/2015;
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    ABSTRACT: The basic concepts of light-driven water splitting using semiconductor-based photoelectrochemical devices are reviewed with the emphasis on the prospects of achieving solar to hydrogen (STH) efficiencies that will enable the development of competitive hydrogen generation technologies to begin to replace those based on fossil fuels. Examples of the calculation of conversion efficiencies are given for different approaches to solar photoelectrolysis, illustrating the need to use well-defined figures of merit in all publications dealing with the photoelectrochemical generation of solar fuels.
    Electroanalysis 02/2015;
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    ABSTRACT: A novel centrifuge-based microfluidic device coupled with an electrochemical detector for the determination of glucose in control human serum is described. The electrochemical compact disk (eCD) platform was based on a poly(dimethylsiloxane) (PDMS) material containing reservoir, a mixing chamber, a spiral channel, a carbon-paste electrode (CPE) detector, and a waste reservoir. For electrode fabrication, a mixture consisting of cobalt phthalocyanine (CoPC), graphite powder, PDMS, and mineral oil was printed and formulated into a PDMS-based electrode pattern. To enhance electrochemical sensitivity, a graphene-polyaniline (G-PANI) nanocomposite solution was cast onto the working electrode surface. During the rotation of the eCD platform at a rotation speed of ∼1000 rpm, a glucose solution and a glucose oxidase solution in separated reservoirs were mixed in a spiral channel to produce hydrogen peroxide by an enzymatic reaction. The produced hydrogen peroxide was determined using the electrode detector set at an applied potential of +0.4 V vs. CPE (pseudo reference electrode). Under optimal conditions, a linear calibration ranging from 1 to 10 mM with a limit of detection (LOD) of 0.29 mM (S/N=3) and a limit of quantitation (LOQ) of 0.97 mM (S/N=10) was obtained. Various common interference compounds including ascorbic acid, uric acid, paracetamol, and L-cysteine were tested. Finally, glucose in control serum samples containing certified concentrations were amperometrically determined and validated. Glucose levels measured using the eCD system matched actual values for the certified reference serum samples with satisfactory accuracy.
    Electroanalysis 02/2015;
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    ABSTRACT: Micelles composed of alternating polymer – poly(maleic anhydride alt-1-octadecene) (crosslinked and hydrolyzed) of diameter close to 200 nm were incorporated to polypyrrole films in course of potentiostatic polymerization. In this way a novel composite material was obtained with quite unique properties compared to typical polypyrrole. In the present case micelles possessing negatively charged carboxyl groups served as counter ions. The presence of micelles determines nontypical properties of the films such as separate potential ranges corresponding either to cation- and anion-exchange or to low concentration of mobile ions. Factors affecting sensitivity to ions of different charges are discussed. Due to presence of carboxyl groups in the micelles, the obtained films exhibit pH sensitivity, both in potentiometric and voltammetric measurements mode.
    Electroanalysis 02/2015;
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    ABSTRACT: Oil analysis for the case of quinizarin in methyllaurate is demonstrated with a disposable carbon microsphere – polystyrene composite electrode. Oxidation and reduction of quinizarin are observed as three-phase boundary processes at the immiscible oil | water | carbon interface. Randomly packed glassy carbon microspheres (2–12 µm diameter) held together with a polystyrene binder (ca. 0.1 % by weight) are immobilized onto a pencil lead electrode and used for electrochemical oil analysis. Pore-filling with oil is optimised for voltammetric detection and fluorescence spectroscopy is employed to support the mechanistic analysis based on voltammetry. Future applications for a wider range of oils and additives are proposed.
    Electroanalysis 02/2015;
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    ABSTRACT: The influence of membrane composition, ion nature, measuring time and stirring mode on the generalized diffusion parameter q was investigated. It was found that the main factors of influence are PVC to plasticizer ratio and measuring time, which obey rigid regularities and can be estimated. It makes possible to evaluate the role of the diffusion factor for other systems and measuring conditions using some averaged q value determined for a limited set of systems. It was shown that averaged q value allowed reliable estimating of low selectivity coefficients (down to 10−8) from strongly biased values determined by separate solution method.
    Electroanalysis 02/2015;
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    ABSTRACT: Gold nanoseed particles (AuNSPs) of ca. 3.5 nm were attached on a Ni disk electrode, and the electrochemical properties of the thus-prepared AuNSP-attached nickel (AuNSP/Ni) electrode were investigated. As a remarkable effect of AuNSPs, cyclic voltammograms of Fe(CN) recorded with an AuNSP/Ni electrode was reversible and almost identical to those recorded with an Au disk electrode, while a reversible response was not observed with a Ni disk electrode. The similar tendency was observed for the electrochemical oxidation of uric acid and glucose. Also, AuNSPs was proved to suppress the redox reactions of the Ni electrode in alkaline solutions.
    Electroanalysis 02/2015;