HILIC Stationary Phases: Polymer- versus Silica-Based Columns
A comparison of polymer- and silica-based stationary phases used in hydrophilic interaction chromatography (HILIC) for saccharide analysis.
Hydrophilic interaction chromatography (HILIC) is becoming more popular and a wide range of HILIC stationary phase are available on the market. The surface of HILIC stationary phase is often modified with different types of polar functional groups, including amide-, amino-, diol- and cyano groups. The base material can be either silica or polymer, but like reversed-phase columns, the majority of HILIC columns on the market are silica-based. This is possibly because analysts are unfamiliar with polymer-based columns and regard them as expensive and offer lower resolutions than silica-based columns. This article discusses the advantages of polymer-based HILIC columns compared to silica-based HILIC columns for saccharide analysis
Extracting Estrogenic Hormones Using Rotating Disk and Modified Clays
April 14th 2025University of Caldas and University of Chile researchers extracted estrogenic hormones from wastewater samples using rotating disk sorption extraction. After extraction, the concentrated analytes were measured using liquid chromatography coupled with photodiode array detection (HPLC-PDA).
Polysorbate Quantification and Degradation Analysis via LC and Charged Aerosol Detection
April 9th 2025Scientists from ThermoFisher Scientific published a review article in the Journal of Chromatography A that provided an overview of HPLC analysis using charged aerosol detection can help with polysorbate quantification.
Removing Double-Stranded RNA Impurities Using Chromatography
April 8th 2025Researchers from Agency for Science, Technology and Research in Singapore recently published a review article exploring how chromatography can be used to remove double-stranded RNA impurities during mRNA therapeutics production.
