Table of isotachophoretic indices

Hirokawa, Takatsugu; Nishino, Masamichi; Aoki, Nobuyuki; Kiso, Yoshiyuki; Sawamoto, Yasuyo; Yagi, Takao; Akiyama, Junichi

doi:10.1016/s0021-9673(00)80225-3

Cited by 278 publications

(96 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Isotachophoretic qualitative and quantitative indices have been published for 287 ions in the pH range of 3 -10 in a tabular form. 19 The validity of our simulation has been confirmed for a large number of samples by many researchers. Two different approaches have been reported concerning the simulation of electrophoretic processes.…”

Section: Isotachophoretic Steady Statesupporting

confidence: 60%

Computer Simulation of Isotachophoresis

Hirokawa

Kiso

1992

ANAL. SCI.

Self Cite

View full text Add to dashboard Cite

A computer simulation of isotachophoresis is described for the purpose of determining physico-chemical constants and separation optimization. On the basis of the mobilities, dissociation constants and stability constants of the separands, the effective mobilities and the isotachopherogram in the steady state condition can be exactly simulated at a given electrolyte condition. When some of the necessary constants are unknown, they can be evaluated by means of a leastsquares method on the basis of the observed qualitative indices. Since the sample amount necessary for electrophoretic separation is very small and good separability from coexisting substances is expected, this may be one of the useful methods for determining the physico-chemical constants. When the necessary constants are known, the optimum separation condition can be obtained by an iterative simulation that varies the electrolyte condition, such as the electrolyte pH, the solvent (water and methanol) and the concentration of the complex-forming agents to give the largest effective mobility differences among the separands.

show abstract

Section: Isotachophoretic Steady Statesupporting

confidence: 60%

Computer Simulation of Isotachophoresis

Hirokawa

Kiso

1992

ANAL. SCI.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The decrease of/z with increasing length of the alkyl chain in the acid have been also found with C~-C12 alkyl sulfonates [14]. It is therefore likely to suppose that the same decrease in/z continues with the C8-C2o fatty acids.…”

Section: Discussionmentioning

confidence: 72%

“…The electrophoretic mobility, /J'FA, of the C~-C~0 acids are known from literature [14]. The /~ values appear to decrease gradually from -56.6…”

Section: Discussionmentioning

confidence: 99%

Application of micellar electrokinetic chromatography and indirect UV detection for the analysis of fatty acids

Erim

Kraak

1995

Journal of Chromatography A

View full text Add to dashboard Cite

Application of micellar electrokinetic chromatography and indirect UV detection for the analysis of fatty acids Erim, F.B.; Xu, X.; Kraak, J.C. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. AbstractA micellar electrokinetic chromatographic system using indirect UV detection was developed for the analysis of saturated fatty acids. Sodium dodecyl benzenesulfonate (SDBS) was used as micellar surfactant as well as chromophore for the indirect detection. The effects of the addition of acetonitrile and Brij on the migration and solubility of the fatty acids was investigated. With a mixture of 10 mM SDBS + 50% acetonitrile + 30 mM Brij, a complete separation of the C8-C2o fatty acids was obtained. The applicability of the developed system for the analysis of fatty acids in butter is demonstrated.

show abstract

“…The problem with the availability of these data is that whereas pK values of many components are tabu-0021-9673/96/$15.00 © 1996 Elsevier Science B.V. All rights reserved PII S0021-9673(96)00273-7 lated, reliable mobility data are rare. Most of the data were taken from publications by Hirokawa et al [2][3][4]. The buffer performance is calculated using the usual textbook equations.…”

Section: Methodsmentioning

confidence: 99%

Buffer capacity, ionic strength and heat dissipation in capillary electrophoresis

Reijenga

Verheggen

Martens

et al. 1996

Journal of Chromatography A

View full text Add to dashboard Cite

The composition of background electrolyte (BGE) in capillary electrophoresis (CE) is important for both selectivity and efficiency. Although the importance of pH and ionic strength predominates, attention should also be paid to specific conductivity, heat dissipation and buffering capacity. At a given pH/ionic strength combination, several buffers can in principle be used. Preference should be given to the so called Good type buffers because of the combination of higher buffering capacity and lower specific conductivity. Heat dissipation, leading to disturbances in migration and efficiency can thus be minimised. Buffer performance was calculated using a recently developed buffer selection and evaluation computer program.

show abstract

Table of isotachophoretic indices

Cited by 278 publications

References 6 publications

Computer Simulation of Isotachophoresis

Computer Simulation of Isotachophoresis

Application of micellar electrokinetic chromatography and indirect UV detection for the analysis of fatty acids

Buffer capacity, ionic strength and heat dissipation in capillary electrophoresis

Contact Info

Product

Resources

About