Peak resolution by semiderivative voltammetry

Toman, Jeffrey J.; Brown, Steven D.

doi:10.1021/ac00232a046

Cited by 44 publications

(26 citation statements)

References 43 publications

(30 reference statements)

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“…It was assumed that the difference between the irreversible semi-derivative peak and its fit with Eq. (5) is small [65,66], but the accuracy of reproduction of the parameters of such fitted semiderivative signal was not discussed. Particularly, correctness of parameters of overlapped irreversible semi-derivative peaks which are determined on the basis of fitting with Eq.…”

Section: Introductionmentioning

confidence: 99%

Semi-differential analysis of irreversible voltammetric peaks

Grdeń

2016

J Solid State Electrochem

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Voltammetric peaks obtained by simulation of electrochemical reactions under conditions of linear semi-infinite diffusion with an irreversible electron transfer process are analysed using a semi-differentiation procedure. Obtained semi-derivative peaks, separated or overlapped, are fitted with appropriate mathematical functions. The functions used for data fitting include a function describing symmetrical peaks, proposed by several authors for fitting irreversible semiderivative peaks, and two alternative functions that express asymmetric shape of the irreversible semi-derivative signals. When applied to the overlapped irreversible semi-derivative peaks, the latter two functions allow calculating certain electrochemical parameters with a better accuracy as compared with the function derived for the symmetrical peaks.

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Section: Introductionmentioning

confidence: 99%

Semi-differential analysis of irreversible voltammetric peaks

Grdeń

2016

J Solid State Electrochem

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“…For complexes 7؊10 and 15؊19, where the aromatic spacer is interpolated between the "Co 2 C 2 " moieties, the E°Ј values cannot be immediately evaluated from the CV responses at low temperature since the peaks are partially overlapped. We successfully employed a computer-assisted technique for peak resolution enhancement called semiered and/or the scan rate is increased, the chemical compliderivative voltammetry [36] [37] , where the CV data are first cations involving the primary radical anions are quenched semi-integrated and then differentiated with respect to time so that two peak couples, corresponding to subsequent 1e ( Figure 3). Alternatively, we used the Square Wave Voltamreductions and showing full chemical reversibility, are obmetry (SWV) technique [38] to resolve this overlapping.…”

Section: Introductionmentioning

confidence: 99%

Electronic Communication in [Co2(CO)6]2-Diyne and [Co2(CO)4(dppm)]2-Diyne Complexes

Osella¹,

Milone

Nervi

et al. 1998

Eur. J. Inorg. Chem.

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“…18 The semidifferentiation of the LSV data was recommended to improve the resolution. 19 Mocak et al 13 used an improved numerical way of fractional differintegration to enhance the resolution of LSV, and obtained better results. In addition, in Ref.…”

Section: Fod Of the Gaussian Functionmentioning

confidence: 99%

Fractional-order Differentiation of the Gaussian Function for Processing Overlapped Peaks

2009

ANAL. SCI.

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The resolution method for overlapped peaks based on fractional-order differentiation (FOD) of the Gaussian function is described. Its main idea stems from a variation of the maximum and the zero-crossing of the Gaussian peaks signal at different differential orders. I obtained two kinds of estimators for estimating the characteristic parameters of the Gaussian peak based on the above relationship. The resolution of several kinds of overlapped peaks simulated by computer has been performed and discussed in detail. The proposed method has been used to resolve overlapped voltammetric peaks obtained in the analysis of binary mixtures of Cd(II) and In(III) metal ions. The results indicate that the proposed method can be used to resolve overlapped peaks which can be modeled by the Gaussian peaks both effectively and satisfactorily.

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Peak resolution by semiderivative voltammetry

Cited by 44 publications

References 43 publications

Semi-differential analysis of irreversible voltammetric peaks

Semi-differential analysis of irreversible voltammetric peaks

Electronic Communication in [Co2(CO)6]2-Diyne and [Co2(CO)4(dppm)]2-Diyne Complexes

Fractional-order Differentiation of the Gaussian Function for Processing Overlapped Peaks

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