Assessing Banned Menthol Characterizing Flavors in Cigarettes with GC–MS
April 24th 2025The United Kingdom banned menthol as a characteristic flavor in cigarettes in May 2020. Researchers tested cigarettes sold in 2021–2022 for menthol and other characterizing flavors through sensory and chemical testing, using gas chromatography–mass spectrometry (GC–MS) in their research.
Evaluating Body Odor Sampling Phases Prior to Analysis
April 23rd 2025Researchers 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.
Quantifying Terpenes in Hydrodistilled Cannabis sativa Essential Oil with GC-MS
April 21st 2025A 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.
Understanding FDA Recommendations for N-Nitrosamine Impurity Levels
April 17th 2025We spoke with Josh Hoerner, general manager of Purisys, which specializes in a small volume custom synthesis and specialized controlled substance manufacturing, to gain his perspective on FDA’s recommendations for acceptable intake limits for N-nitrosamine impurities.
Determining the Serum Proteomic Profile in Migraine Patients with LC–MS
April 17th 2025Researchers used liquid chromatography–mass spectrometry (LC–MS) in their proteomic analysis to compare the serum proteome of migraine patients with healthy controls and to identify differentially expressed proteins as potential migraine biomarkers.
Determining the Link Between Prenatal Cannabis Use and Symptoms of Depression Using LC–MS/MS
April 16th 2025Researchers 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.
Miniaturized GC–MS Method for BVOC Analysis of Spanish Trees
April 16th 2025University 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.
Identifying PFAS in Alligator Plasma with LC–IMS-HRMS
April 15th 2025A combination of liquid chromatography ion mobility spectrometry, and high-resolution mass spectrometry (LC–IMS-HRMS) for non-targeted analysis (NTA) was used to detect and identify per- and polyfluoroalkyl substances (PFAS) in alligator plasma.
A Matrix-Matched Semiquantification Method for PFAS in AFFF-Contaminated Soil
Published: April 14th 2025 | Updated: April 14th 2025Catharina Capitain and Melanie Schüßler from the Faculty of Geosciences at the University of Tübingen, Tübingen, Germany describe a novel approach using matrix-matched semiquantification to investigate per- and polyfluoroalkyl substances (PFAS) in contaminated soil.
Profiling Terpenoids in Cannabis with GC×GC-MS
April 14th 2025A joint study conducted by the University of Ferrara (Italy) and the Council for Agricultural Research and Economics (Rome, Italy) focused on the analysis of terpenes and terpenoids—key bioactive compounds responsible for the distinctive flavor and potential therapeutic effects of cannabis. For this study, the research team used comprehensive two-dimensional gas chromatography coupled with mass spectrometry (GC×GC-MS) coupled with dynamic headspace extraction (DHS) to profile these compounds in cannabis inflorescences. LCGC International spoke to Flavio A. Franchina of the University of Ferrara, corresponding author of the paper which resulted from this study, about their research.
The Current Challenges Mitigating PFAS
April 11th 2025In the final part of this interview, Ralph Mead and his group at the University of North Carolina, Wilmington, discuss the biggest challenges in mitigating the effects of PFAS right now. Here’s the final part of our conversation with the Mead Group at UNC Wilmington.
Analyzing Vitamin K1 Levels in Vegetables Eaten by Warfarin Patients Using HPLC UV–vis
April 9th 2025Research conducted by the Universitas Padjadjaran (Sumedang, Indonesia) focused on the measurement of vitamin K1 in various vegetables (specifically lettuce, cabbage, napa cabbage, and spinach) that were ingested by patients using warfarin. High performance liquid chromatography (HPLC) equipped with an ultraviolet detector set at 245 nm was used as the analytical technique.