Systematic study of elementary models of analytical signals in the form of peaks and waves

Stromberg, A. G.; Романенко, С. В.; Романенко, Е. С.

doi:10.1007/bf02827993

Cited by 10 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2) is completely symmetrical (Fig. 1) [4,12,42,52,62], the term preceding cosh −2 is equal to the peak height. A more complicated situation arises for an irreversible electron transfer, when the expression of the semiderivative peak is given by a series (Eq.…”

Section: Introductionmentioning

confidence: 99%

Semi-differential analysis of irreversible voltammetric peaks

Grdeń

2016

J Solid State Electrochem

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

Semi-differential analysis of irreversible voltammetric peaks

Grdeń

2016

J Solid State Electrochem

View full text Add to dashboard Cite

show abstract

“…In work [3][4][5][6][7][8][9] a set of parameters of the frame plotted by inflectional tangents to the inflection points on peak branches were used for peak properties evaluation. Authors [10] showed that tangent approach has advantages at determination of separate peak maximum.…”

Section: Introductionmentioning

confidence: 99%

Determination of overlapping peaks heights by tangent method

Larionova

Романенко

2012

2012 7th International Forum on Strategic Technology (IFOST)

View full text Add to dashboard Cite

In this work the tangent approach is valid on example of overlapping voltammetric peaks of Cd (II) and Tl (I) at their different concentration in a mixture. Height of the frame plotted by inflectional tangents to the inflection points on peak branches is used as a peak maximum for calibration curve plotting. It is founded that systematic errors are not significant for the measurement of Tl (I) peak. In case of the Cd (II) peak the significant systematic error arising from tailing of the ascending part of Tl (I) peak is observed. We propose a method of systematic errors compensation. Systematic errors are estimated by peak series modeling. We use six parametric peak model with help of a priory information about signal shape and real values of resolution criteria and ratios of peaks heights. Peak shape is determined by difference method and ratios of peak heights by calibration curve.

show abstract