Chromatography retention model

ESTIMATION OF RETENTION MODELS ADEQUACY IN MICELLAR LIQUID CHROMATOGRAPHY... [Pg.45]

Mass-action model of surfactant micelle formation was used for development of the conceptual retention model in micellar liquid chromatography. The retention model is based upon the analysis of changing of the sorbat microenvironment in going from mobile phase (micellar surfactant solution, containing organic solvent-modifier) to stationary phase (the surfactant covered surface of the alkyl bonded silica gel) according to equation ... [Pg.81]

Y. V. Gankin, A. E. Gorshteyn and A. Robbat-Jr, Identification of PCB congeners by gas chromatography electi on capture detection employing a quantitative sti ucture-retention model , Aim/. Chem. 67 2548-2555 (1995). [Pg.371]

Figure 4.17 General phenonenaloglcal retention model for a solute that participates in a secondary chemical equilibrium in liquid chromatography. A - solute, X - equilibrant, AX analyte-equilibrant coeplex, Kjq - secondary chemical equilibrium constant, and and are the primary distribution constants for A and AX, respectively, between the mobile and stationary phases.

Yamamoto, A., Hayakawa, K., Matsunaga, A., Mizukami, E., and Miyazaki, M., Retention model of multiple eluent ion chromatography. A priori estimations of analyte capacity factor and peak intensity /. Chromatogr., 627,17,1992. [Pg.269]

Rounds, M. A. and Regnier, F. E., Evaluation of a retention model for high-performance ion-exchange chromatography using two different displacing... [Pg.270]

Madden, J. E. and Haddad, P. R., Critical comparison of retention models for the optimization of the separation of anions in ion chromatography II. Suppressed anion chromatography using carbonate eluents, /. Chromatogr. A, 850, 29, 1999. [Pg.304]

Ng, K.L., Pauli, B., Haddad, P.R., and Tanaka, K., Retention modeling of electrostatic and adsorption effects of aliphatic and aromatic carboxylic acids in ion-exclusion chromatography, /. Chromatogr. A, 850, 17, 1999. [Pg.306]

Geng, X., Regnier, F.E. (1984). Retention model for proteins in reversed-phase liquid chromatography. J. Chromatogr. 296, 15-30. [Pg.315]

F. Houton, L. Yaoping and X. Minjie, Nonlinear function retention model in weak acid anion chromatography. J. Chromatogr.A 945 (2002) 97-102. [Pg.60]

Hetaeric chromatography, 230, 231 effect of charge on hetaeron, 233 retention model of, 231-238 Hetaeron. 191, 230, 231, 240, 243, 249, 280 see also Complexing agent adsorption on the stationary phase, 231, 249,230 amphiphilic, 243 cetrimide, 248 decylsulfonate, 230 dodecylbenzenesulfonate, 230 formation constant of complexes, 276 lauryl sulfate, 230 metal chelating, 262 micelle formation, 230 optically active, 262 surface concentration of, 232... [Pg.167]

Several different physicochemical models have been proposed to predict and explain the retention behavior in liquid-solid chromatography. The models can be divided into two groups depending on the assumptions made concerning the fundamental mechanism of the chromatographic process. The two assumptions are as follows ... [Pg.224]

PG Muijselaar, HA Claessens, CA Cramers. Migration behavior of monovalent weak acids in micellar electrokinetic chromatography mobility model versus retention model. J Chromatogr A 765 295—306, 1997. [Pg.137]

New concepts presented in this edition include monolithic columns, bonded stationary phases, micro-HPLC, two-dimensional comprehensive liquid chromatography, gradient elution mode, and capillary electromigration techniques. The book also discusses LC-MS interfaces, nonlinear chromatography, displacement chromatography of peptides and proteins, field-flow fractionation, retention models for ions, and polymer HPLC. [Pg.696]

Bruch T, Graalfs H, Jacob L, Freeh C. Influence of surface modification on protein retention in ion-exchange chromatography Evaluation using different retention models. Journal of Chromatography A 2009 1216 919-926. [Pg.56]

Another attempt to circumvent the failure of K v to model BCF well was made by Escuder-Gilabert et al. (2001), who used bio-partitioning micellar chromatography retention factor (k) ... [Pg.348]

For isocratic conditions, Kopaciewicz et al 7 developed a protein retention model for ion-exchange chromatography based on an earlier treatment of polyelectrolyte retention. Here k, the relative retention (or capacity factor), is defined as... [Pg.560]

Bidlingmeyer, B.A. Separation of ionic compounds by reversed-phase liquid chromatography an update of ion-pairing techniques. J. Chmmatogr. 1980,18, 525-539. Sarzanini, C. et al.. Retention model for anionic, neutral and cationic analytes in reversed-phase ion interaction chromatography. AnaL Chem. 1996, 68,4494-4500. [Pg.52]

Bartha, A. and Stahlbeig, J. Electrostatic retention model of reversed-phase ion-pair chromatography. J. Chmmatogr. A. 1994, 668, 255-284. [Pg.52]

Cantwell, F.R Retention model for ion-pair chromatography based on double-layer ionic adsorption and exchange. Pharm. Biomed. Anal. 1984, 2, 153-164. [Pg.52]

Tonelh, D., Zappoh, S., andBaUarin, B. Dye-coated stationary-phases a retention model for anions in ion interaction chromatography. Chromatographia 1998, 48, 190-196. [Pg.97]

P. Zhuang, R. Thompson, and T. O Brien, A retention model for polar selectivity in reversed phase chromatography as a function of mobile phase organic modifier type, /. Liq. Chrom. Rel. Technol. 28 (2005), 1345-1356. [Pg.231]

S. Espinosa, E. Bosch, and M. Roses, Retention of ionizable compounds in high-performance hquid chromatography. IX Modeling retention in reversed-phase liquid chromatography as a function of pH and solvent composition with acetonitrile-water mobile phases,/. Chromatogr. A 947 (2002),47-58. [Pg.233]

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