GC–MS

Optimal reaction conditions for the desired deethylation were found to be mild, using only water and oxygen at or close to ambient temperatures.

The investigation of airborne PFAS transmission is important in preserving the outdoor urban environment. The authors explain why GC–MS/MS and LC–MS/MS are the best techniques for analyzing airborne PFAS.

Recent developments in GC×GC that make it more amenable for routine use are discussed.

Webinar Date/Time: Tue, Sep 19, 2023 11:00 AM EDT

On Thursday, September 28, 2023, the Chromatographic Society (ChromSoc) will hold a meeting focused on gas chromatography in the Science and Industry Museum, in Manchester, UK.

As part of the upcoming Recent Advances in Gas Chromatography meeting, Laura McGregor of SepSolve will discuss how workflows for comparing 1D and 2D GC–MS chromatograms can be automated.

As part of the upcoming Recent Advances in Gas Chromatography meeting, Nicholas Morley will look at how two-dimensional gas chromatography-time-of-flight-mass spectrometry analyzes pharmaceutical packaging.

Two-dimensional gas chromatography time-of-flight mass spectrometry (GCxGC/TOF-MS) and gas chromatography–time-of-flight mass spectrometry (GC-TOF-MS), two different gas chromatography techniques, will have their procedures and uses compared at the Science and Industry Museum, in Manchester, UK.

Researchers in China studied a new process for measuring aberrant metabolites.

Studies 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.

What critical components can help to resolve the separation challenges related to pesticides analysis in food?

An overview of different approaches for the qualitative and quantitative analysis of polysorbates.

Sauce-flavor or sauce-aroma baijiu, one variant of a popular Chinese liquor, is treated with a fermentation starter called daqu, giving the concoction a unique taste profile, and scientists want more information about how it can inform the manufacturing of higher-quality baijiu.

During a session at the North American Chemical Residue Workshop, researchers discussed a method for detecting small amounts of pesticides in infant food.

Among the compounds of concern found in the samples were nicotine-related alkaloids, psychoactive cannabinoids, and chemicals that promoted inflammation of the respiratory system.

While both branched-chain fatty acids (BCFAs) and straight-chain fatty acids (SCFAs) were analyzed, the profiling of BCFAs was considered especially important for future metabolomics and lipidomics studies.

Webinar Date/Time: Wed, Aug 23, 2023 11:00 AM EDT

Quality 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.

Stephanie Rankin-Turner and colleagues at Johns Hopkins Bloomberg School of Public Health have recently performed research in Zambia indicating that mosquitoes are more attracted to humans who exhibit abundant levels of certain volatile carboxylic acids.

While most diapers do not contain all 15 polycyclic aromatic hydrocarbons (PAHs), the concentration of these compounds varies by manufacturer, and no disposable diaper is entirely free of PAHs.

The combination of deep eutectic solvents (DESs) and cellulose paper, according to the researchers, bridges a current gap in sustainable, paper-based sorptive phases.

Nitrated polycyclic aromatic hydrocarbons (nitro-PAHs) are suspected to be carcinogenic, and improvements are sought to improve gas chromatography–mass spectrometry (GC–MS) methods traditionally used for this analysis.

A novel isotopologue was synthesized in a stable isotope dilution assay (SIDA) for quantification of γ-nonalactone for the first time in pinot noir wines from New Zealand.

Enhancements in chromatographic performance were reviewed as were experimental concerns, both pointing toward using specific solvents to influence more sustainable industrial development.

Scientists have developed a novel sorbent, diphenyl-functionalized nickel foam (NF-2Ph), for the accurate detection of polycyclic aromatic hydrocarbon (PAH) contaminants in Chinese herbal medicines. The method, which combines dispersive solid-phase extraction (DSPE) with gas chromatography-mass spectrometry (GC–MS) analysis, offers high sensitivity and precision, providing a reliable approach for quality control and safety assessment of these medicinal products.