André de Villiers

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André de Villiers is with the Department of Chemistry and Polymer Science at the University of Stellenbosch, in Stellenbosch, South Africa.

Articles

Mobile phase glass bottles of Liquid Chromatography Mass Spectrometry LC MS instruments. The instrumental LC MS was used for advanced analysis in the pharmacology, chemistry and other research labs. | Image Credit: © S. Singha - stock.adobe.com

Possibilities and Limitations of Aqueous Temperature Responsive Liquid Chromatography in Comprehensive 2D–LC

Frédéric Lynen;Kristina Wicht;Ardiana Kajtazi;Elena Bandini;André de Villiers;Gaëlle Spileers;Turaj Rahmani;Mathijs Baert;Adriaan Ampe;Jonas Veenhoven
August 2nd 2023

Analyzing representative standard mixtures, APIs, and synthetic impurities shows that when TRLC is combined with RPLC in 2D-LC, separation performance is improved. We explain why.

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The Future of the Extra Dimension in Liquid Chromatographic Separations

André de Villiers
August 1st 2017

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Improving HPLC Separation of Polyphenols

André de Villiers;Jeanine Roodman;Kathithileni M. Kalili;Mareta Malan
November 1st 2010

This article highlights a number of recent developments in HPLC for polyphenol analysis.

Latest Updated Articles

Technology Trends in Separation Science: Data Handling
Published: July 3rd 2024 | Updated: July 8th 2024
Technology Trends in Separation Science: Data Handling
Human monoclonal antibody to fight cancer | Image Credit: © Yuriy - stock.adobe.com
Published: June 28th 2024 | Updated: October 26th 2024
Analysis of Therapeutic Monoclonal Antibodies Using a Platform Size Exclusion-HPLC Method
Virus protection. Vaccine search. Antibodies and viral infection. Immune defense of the body. Attack on antigens 3D illustration By Siarhei - stock.adobe.com
Published: July 16th 2024 | Updated: October 26th 2024
Characterization of Product Related Variants in Therapeutic Monoclonal Antibodies
Chromatograph with glass sample bottles | Image Credit: © JJIMAGE - stock.adobe.com
Published: September 10th 2024 | Updated: October 26th 2024
Analytical Method Lifecycle of SFC Methods from Development Use to Routine QC Implementation; Supporting Small Molecule R&D and Commercialization
Glass vial, pipette and woman scientist in laboratory for medical study, research or experiment. Test tube, dropper and professional female person with chemical liquid for pharmaceutical innovation. | Image Credit: © peopleimages.com - stock.adobe.com
Published: September 16th 2024 | Updated: October 26th 2024
Are You Sure You Understand USP <621>?
Scientist moved the vial of sample out from the tray autosampler of the Liquid Chromatography Mass Spectrometer LC/MS after the analysis was complete. | Image Credit: © S. Singha - stock.adobe.com
Published: September 13th 2024 | Updated: October 26th 2024
In-Loop Analyte Degradation in Two-Dimensional Liquid Chromatography: Example and Solutions