A nonlinear electrophoretic model for <scp>P</scp>eakMaster: I. Mathematical model

Hruška, Vlastimil; Riesová, Martina; Gaš, Bohuslav

doi:10.1002/elps.201100554

Cited by 42 publications

(51 citation statements)

References 22 publications

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“…The values of l e and l EOF , which were calculated from the measured migration times, are summarized in Table 4. The data obtained from the CE measurements using BGE composed of 20 mM lactic acid and NaOH (pH 4.2) agree well with those calculated using the PeakMaster 5.3 software [27], cf. the second and third column of Table 4, which indicates that the Table 4 Electrophoretic mobility l e of various anions, as calculated using the PeakMaster 5.3 software [27], or evaluated from the migration times measured in BGE 1 (20 mM lactic acid + NaOH, pH 4.2) and BGE 2 (20 mM lactic acid + NaOH, pH 4.2 + 10% v/v ethanol) in the absence and presence of various IL cations; last row shows the ''mobility'' of electroosmotic flow (EOF) l EOF.…”

Section: Effect Of the Cationic Il Component On The Electrophoretic Msupporting

confidence: 78%

Correlation between the standard Gibbs energies of an anion transfer from water to highly hydrophobic ionic liquids and to 1,2-dichloroethane

Langmaier

Samec

Samcová

et al. 2014

Journal of Electroanalytical Chemistry

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Section: Effect Of the Cationic Il Component On The Electrophoretic Msupporting

confidence: 78%

Correlation between the standard Gibbs energies of an anion transfer from water to highly hydrophobic ionic liquids and to 1,2-dichloroethane

Langmaier

Samec

Samcová

et al. 2014

Journal of Electroanalytical Chemistry

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“…Simultaneously, the mobility of free R‐FLU was determined by independent measurements at zero concentration of CD and calculated by our program PeakMaster 5.3 . The resulting mobility was 19.7 × 10 −9 m 2 s −1 V −1 .…”

Section: Resultsmentioning

confidence: 99%

Applicability and limitations of affinity capillary electrophoresis and vacancy affinity capillary electrophoresis methods for determination of complexation constants

et al. 2013

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ACE and vacancy affinity capillary electrophoresis (VACE) are the commonly used methods for determination of complexation constants by CE. The applicability and limitations of these methods were tested experimentally and by means of simulations using our simulation software Simul 5 Complex. It was shown that while the ACE method provides reliable and precise values of complexation parameters, those determined by VACE can be incorrect especially in the case of strong complexation. The effective mobilities of the system peaks in the VACE method, and consequently, the resulting complexation parameters were found to be a function of concentration of the analyte present in the BGE. Development of system peaks in VACE is discussed in the frame of the linear theory of electromigration. Dependence of mobility of system peaks on the composition of the BGE cannot be characterized by a simple analytical expression as in the case of ACE method. Thus, the VACE method fails and the resulting complexation constants might seriously differ from the reality.

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“…Due to the fact that peaks in real electropherograms are not perfectly symmetrical, we fitted experimentally acquired peaks of TB by Haarhoff–van der Linde (HVL) function Eq. using Origin software version 6.0 (OriginLab Corporation, USA) and we used a parameter a 1 as a marker of true peak position ( t R,corr ) in a subsequent calculation of effective mobility instead of a plain migration time represented by the top of the peak.

HV {normalL}_{δ} (t; a_{0}, a_{1}, a_{2}, a_{3}) = \frac{\frac{a_{0} \cdot a_{2}}{a_{2} \cdot a_{3 δ} \sqrt{2 π}} \cdot e^{- 0.5 \cdot {[(normalt - {normala}_{1}) / {normala}_{2}]}^{2}}}{\frac{1}{e^{a_{3 δ}} - 1} + 0.5 \cdot [1 + \erf (\frac{t - a_{1}}{\sqrt{2} \cdot a_{2}})]}

…”

Section: Methodsmentioning

confidence: 99%

Influence of substituent position and cavity size of the regioisomers of monocarboxymethyl‐α‐, β‐, and γ‐cyclodextrins on the apparent stability constants of their complexes with both enantiomers of Tröger's base

Řezanka

Řezanková

Sedláčková

et al. 2016

J of Separation Science

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Enantiomers of Tröger's base were separated by capillary electrophoresis using 2(I) -O-, 3(I) -O-, and 6(I) -O-carboxymethyl-α-, β-, and γ-cyclodextrin and native α-, β-, and γ-cyclodextrin as chiral additives at 0-12 mmol/L for β-cyclodextrin and its derivatives and 0-50 mmol/L for α- and γ-cyclodextrins and their derivatives in a background electrolyte composed of sodium phosphate buffer at 20 mmol/L concentration and pH 2.5. Apparent stability constants of all cyclodextrin-Tröger's base complexes were calculated based on capillary electrophoresis data. The obtained results showed that the position of the carboxymethyl group as well as the cavity size of the individual cyclodextrin significantly influences the apparent stability constants of cyclodextrin-Tröger's base complexes.

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A nonlinear electrophoretic model for PeakMaster: I. Mathematical model

Cited by 42 publications

References 22 publications

Correlation between the standard Gibbs energies of an anion transfer from water to highly hydrophobic ionic liquids and to 1,2-dichloroethane

Correlation between the standard Gibbs energies of an anion transfer from water to highly hydrophobic ionic liquids and to 1,2-dichloroethane

Applicability and limitations of affinity capillary electrophoresis and vacancy affinity capillary electrophoresis methods for determination of complexation constants

Influence of substituent position and cavity size of the regioisomers of monocarboxymethyl‐α‐, β‐, and γ‐cyclodextrins on the apparent stability constants of their complexes with both enantiomers of Tröger's base

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