March 28th 2024
In this edition of “Inside the Laboratory,” Emanuela Gionfriddo, PhD, an associate professor of chemistry at the University at Buffalo, discusses her group’s current research endeavors, including using solid-phase microextraction (SPME) coupled to liquid chromatography (LC) and gas chromatography (GC) to further understand the chemical relationship between environmental exposure and disease and elucidate micropollutants fate in the environment and biological systems.
Using LLE and GC–MS to Separate Biologically Extractive Components in Alaska Yellow Cedar Trees
February 28th 2024A recent study explores the use of liquid–liquid extraction (LLE) and gas chromatography–mass spectrometry (GC–MS) to identify the compounds found in extractives of Alaska Yellow Cedar trees.
Pittcon 2024: Chromatographic Techniques Used to Detect PFAS
February 25th 2024On February 25, a Pittcon oral session, titled “Detection of PFAS and other Polyfluorinated Analytes,” took place at the San Diego Convention Center in San Diego, California. This session included six talks that covered a variety of analytical techniques currently being used in per- and polyfluoralkyl (PFAS) analysis.
Unveiling Phenolic Pollutants in Dairy Products: A Breakthrough Analysis
February 1st 2024A recent study conducted at the University of Jaén in Spain, unveils the presence of 21 phenolic pollutants, including bisphenols and alkylphenols, in milk and dairy products, with significant concentrations detected in items packaged in materials such as polystyrene terephthalate and multilayer packaging, emphasizing the importance of packaging choices in minimizing phenolic contamination.
Q&A: FDA Talks to LCGC About Chromatographic Techniques for PFAS Detection in Food Supply
October 13th 2023FDA scientists have expanded the number of analytes in their analytical method for per- and polyfluoroalkyl substances (PFAS), partly in response to updated guidance out of the European Union (EU) on method parameters and limits of quantification (LOQs).
Review of Packed Sorbent Solid-Phase Extraction and Microextraction Methods From Manual to Automated
August 15th 2023Studies published over the last five years have focused on fully or semi-automated approaches and their applications in extraction of both organic and inorganic pollutants, while modern robotic tools and 3D printing are starting to make impacts.
Polysorbate Analysis in Biopharmaceutical Applications—A Snapshot of the Analytical Toolbox
An overview of different approaches for the qualitative and quantitative analysis of polysorbates.
New Method Enables Online Measurement of Tetraethyllead in Aqueous Samples
July 14th 2023A research team has developed a new method for the online measurement of tetraethyllead (TEL) in aqueous samples. The approach utilizes magnetism-enhanced in-tube solid phase microextraction (ME/IT-SPME) coupled with high performance liquid chromatography (HPLC) and diode array detection (DAD).
GC×GC–MS With Flame Ionization Aids AI Strategies for Raw Hazelnut Volatilome Evaluation
July 11th 2023Quality control of raw hazelnuts is already a highly specific process, but has limitations including operator influence, duration, and lack of standardization. AI is now assisting in quality decision-making using GC×GC analysis.