Effective Cleanup of Fat Containing Samples in the Analysis of Contaminant Residues
High fat content of foods has been a problem when analyzing samples for nonpolar contaminants such as pesticides, PCBs, and PAHs. Extraction methods for these compounds tend to generate samples that are highly contaminated with fatty matrix, causing a number of problems with the subsequent chromatographic analysis. Traditional cleanup techniques, such as gel permeation chromatography (GPC) and normal phase column chromatography can be very effective, but are often expensive and time consuming. In this seminar, we will present an alternative approach to the cleanup of fats using a novel zirconia-based family of sorbents, for both QuEChERS (dispersive SPE) and traditional cartridge SPE.
Altering Capillary Gas Chromatography Systems Using Silicon Pneumatic Microvalves
May 5th 2025Many multi-column gas chromatography systems use two-position multi-port switching valves, which can suffer from delays in valve switching. Shimadzu researchers aimed to create a new sampling and switching module for these systems.
Studying Cyclodextrins with UHPLC-MS/MS
May 5th 2025Saba Aslani from the University of Texas at Arlington spoke to LCGC International about a collaborative project with Northwestern University, the University of Hong Kong, and BioTools, Inc., investigating mirror-image cyclodextrins using ultra-high performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS) and vibrational circular dichroism (VCD).
