Adsorptive Stripping Determination of Scandium(III) with Mordant Blue 9 on Silver Amalgam Film Electrode

Piech, Robert

doi:10.1002/elan.201000176

Cited by 16 publications

(4 citation statements)

References 17 publications

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“…The conditions of the experiment were optimized before the whole series of registrations. 24,25 In particular, the concentration of mordant blue 9 was increased in respect of the substantial nickel concentration.…”

Section: Standard Procedures Of Measurementsmentioning

confidence: 94%

Deviations from bilinearity in multivariate voltammetric calibration models

Jakubowska

Górski

Piech

2013

Analyst

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This work considers the problem of lack of bilinearity in multivariate calibration. In voltammetry this issue especially relies on the analysis of overlapping signals, which change the shape, sensitivity or shift along the potential axis, causing a significant loss of linearity. It limits the quality of many chemometric models designed for linear data. Improvement of the predictive ability of multivariate calibration models is achieved by pre-processing of the raw data. In this work we proposed the application of a technique called orthogonal signal correction (OSC). We demonstrated that orthogonal correction enables the removal of almost all non-linear effects, disturbing voltammetric signals that impede the building of effective PLS models. The methodology was presented using simulated signals, and also in determination of the nanomolar concentration of scandium in the presence of a high and changing excess of nickel.

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Section: Standard Procedures Of Measurementsmentioning

confidence: 94%

Deviations from bilinearity in multivariate voltammetric calibration models

Jakubowska

Górski

Piech

2013

Analyst

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“…Finally, the AdSV determination of Sc(III) in the form of a complex with mordant blue at the Hg(Ag)FE-c has also been reported [57]. Thanks to the low LOD of 5 ng l −1 (t acc = 90s), it was possible to apply the procedure for the analysis of certain environmental samples.…”

Section: Adsorptive Stripping Voltammetrymentioning

confidence: 95%

Renewable silver amalgam film electrodes in electrochemical stripping analysis—a review

Bobrowski

Królicka

Bobrowski³

2016

J Solid State Electrochem

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The success of a voltammetric sensing procedure depends mainly on the proper choice of the working electrode. This is because its ability to accumulate the analyte determines the sensitivity of the method. The main criterion of the selection of the proper working electrode is the available potential window. A variety of conductive materials have been used for the preparation of working electrodes. Of these, two kinds of mercury electrodes-hanging mercury drop and film-were used because of their excellent voltammetric performance and, in particular, their high overpotential of hydrogen reduction. The significant drawbacks of mercury electrodes, however, are the toxicity of the material and the instability of liquid mercury films. To overcome these disadvantages, less toxic mercury-containing materials have been used, such as amalgams and amalgam film electrodes. This group includes renewable silver amalgam film electrodes used for electrochemical stripping sensing purposes. These electrodes have successfully been applied for anodic, adsorptive, cathodic, catalytic voltammetric, and potentiometric stripping determination of trace amounts of inorganic cations and organic compounds in various natural matrices. In this review, the electrode design, characteristics, and application of two kinds of renewable silver amalgam film electrodes are discussed in detail.

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“…39 A renewable mercury lm silver based electrode (Hg(Ag)FE) can be used for the determination of different analytes in samples with various matrices with high sensitivity and precision. [40][41][42][43] Moreover, due to its construction, the amount of toxic waste is highly limited in comparison with classical mercury electrodes.…”

Section: Introductionmentioning

confidence: 99%