ZIB

Electronic Resource

Separation of Regioisomers of Substituted Bromoindoles of Pharmaceutical Interest by RP-HPLC and Capillary Electrophoresis Based on Interaction with Sulfobutyl Ether-β-cyclodextrin (1999)

Szücs, Roman ; Usman, Muhammed ; Beaman, Jon V. ; [et al.]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 22 (1999), S. 59-62

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ISSN: 0935-6304

Keywords: Sulfobutyl ether-β-cyclodextrin ; micellar electrokinetic chromatography ; separation of regioisomers ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Additional Material: 5 Ill.

Type of Medium: Electronic Resource

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Reproducibility of migration times and propagation of error in micellar electrokinetic chromatography (1992)

Vindevogel, John ; Szücs, Roman ; Sandra, Pat

New York, NY [u.a.] : Wiley-Blackwell

Journal of Microcolumn Separations 4 (1992), S. 399-404

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ISSN: 1040-7685

Keywords: micellar electrokinetic chromatography ; electroosmosis ; migration time reproducibility ; propagation of error ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The contributions of several factors (electroosmosis, capacity factor, and elution range) to migration time reproducibility have been evaluated using the theory of error propagation. Experimentally obtained values confirm that a single factor, electroosmosis, can explain most of the observed variability.

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/mcs.1220040506

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Alcohol modifiers in MEKC with SDS as surfactant. Study on the influence of the alcohol chain length (C1—C12) (1996)

Van Hove, Erik ; Szücs, Roman ; Sandra, Pat

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 19 (1996), S. 674-678

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ISSN: 0935-6304

Keywords: Micellar electrokinetic chromatography (MEKC) ; Organic modifiers ; Alcohols ; Chain length ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The influence of alcohol modifiers with different chain length on the migration time window in micellar electrokinetic chromatography (MEKC) has been studied. Highly polar alcohols like methanol and 1-propanol are typical aqueous phase modifiers. Higher alcohols like 1-butanol, 1-pentanol and 1-hexanol influence the micellar structure and are considered as micellar phase modifiers. The effect of long chain alcohols is small because of their low applicable concentrations.

Additional Material: 10 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jhrc.1240191204

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Analysis of beer iso-α-acids by micellar electrokinetic chromatography and multi-wavelength UV detection (1991)

Vindevogel, Johan ; Szücs, Roman ; Sandra, Pat ; [et al.]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 14 (1991), S. 584-586

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ISSN: 0935-6304

Keywords: Micellar electrokinetic chromatography ; Identification by multi-wavelength detection ; Food analysis ; Beer iso-α-acids ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The identification of beer bitter acids in a pre-isomerized hop extract by means of their UV-spectra is described. Preliminary data for the analysis of these compounds in beer samples are presented.

Additional Material: 5 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jhrc.1240140904

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Micellar electrokinetic chromatography of aliphatic compounds with indirect UV detection (1991)

Szücs, Roman ; Vindevogel, Johan ; Sandra, Pat

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 14 (1991), S. 692-693

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ISSN: 0935-6304

Keywords: Micellar electrokinetic chromatography ; Indirect UV detection ; Aliphatic alcohols ; Aliphatic carboxylic acids ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jhrc.1240141012

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