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Researchers developing a plant microbial consortium that can repair in-situ high concentration TNT (1434 mg/kg) contaminated soil, as well as overcome the limitations of previous studies that only focused on simulated pollution, used untargeted metabolone gas chromatography-mass spectrometry (GC-MS) to measure their success.

LCGC International's April series for National Cannabis Awareness Month concludes with a discussion with Walter B. Wilson from the National Institute of Standard and Technology’s (NIST’s) Chemical Sciences Division regarding recent research his team conducted investigating chromatographic interferences that can potentially inflate the levels of Δ9-THC in Cannabis sativa plant samples, and possible solutions to avoid this problem.

Researchers leveraged the advantages of thermodesorption, followed by comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC×GC/TOF-MS), to compare and assess a variety of sampling phases for body odor.

A recent study conducted at the University of Georgia, (Athens, Georgia) presented a validated method for quantifying 18 terpenes in Cannabis sativa essential oil, extracted via hydrodistillation. The method, utilizing gas chromatography–mass spectrometry (GC–MS) with selected ion monitoring (SIM), includes using internal standards (n-tridecane and octadecane) for accurate analysis, with key validation parameters—such as specificity, accuracy, precision, and detection limits—thoroughly assessed. LCGC International spoke to Noelle Joy of the University of Georgia, corresponding author of this paper discussing the method, about its creation and benefits it offers the analytical community.

The critical role of separation science in per- and polyfluoroalkyl substances (PFAS) research highlights just how essential chromatography is in solving complex challenges that benefit society.

Researchers investigating the relationship between cannabis use during pregnancy and depressive symptoms—and whether continued use beyond the first trimester or higher levels of use were linked to increased symptoms—used liquid chromatography–tandem mass spectrometry (LC–MS/MS) to confirm the presence of 11-nor-9-carboxy-delta-9-tetrahydrocannabinol (THC-COOH) in urine samples.

Valladolid University © demachy - stock.adobe.com

University of Valladolid scientists used a miniaturized method for analyzing biogenic volatile organic compounds (BVOCs) emitted by tree species, using headspace solid-phase microextraction coupled with gas chromatography and quadrupole time-of-flight mass spectrometry (HS-SPME-GC–QTOF-MS) has been developed.