Cold Fiber SPME Device
Researchers from the University of Waterloo (Waterloo, Canada) designed and constructed a cold fiber solid-phase microextraction (SPME) device and applied it to the analysis of off flavors in a rice sample.
Researchers from the University of Waterloo (Waterloo, Canada) designed and constructed a cold fiber solid-phase microextraction (SPME) device and applied it to the analysis of off flavors in a rice sample. The device was based on thermoelectric cooling via a three-stage thermoelectric cooler that cooled a copper rod coated with a poly(dimethylsiloxane) hollow fiber that served as the SPME fiber. They examined three compounds in the rice: hexanal, nonanal, and undecanal, which were identified by retention times in a gas chromatography–flame ionization detection system. The cooled fiber device reportedly resulted in better reproducibility and shorter analysis time compared with a conventional solvent extraction method.
HPLC 2025 Preview: Functionalized Monoliths as Selective Sample Preparation Materials
May 16th 2025Analyzing trace compounds from complex samples often requires purification and pre-concentration, and online coupling of solid-phase extraction (SPE) with liquid chromatography (LC) helps minimize analysis time and solvent/sample use. Monoliths with large macropores are ideal for this coupling due to their low back pressure and versatility in various formats.
Thermodynamic Insights into Organic Solvent Extraction for Chemical Analysis of Medical Devices
April 16th 2025A new study, published by a researcher from Chemical Characterization Solutions in Minnesota, explored a new approach for sample preparation for the chemical characterization of medical devices.
