GC–MS

A solid-phase microextraction (SPME) Arrow combined with comprehensive two-dimensional gas chromatography coupled to mass spectrometry (GC×GC–MS) identified about 40 more volatile compounds in a variety of whiskeys compared to conventional SPME.

The reliability of column chromatography for GC–MS analysis of hopanes was tested in oil samples of three different types, using neutral alumina as a solid-phase adsorbent and a Pasteur pipette as a separation device.

Researchers have used comprehensive two-dimensional gas chromatography with time of flight mass spectrometry and Fisher-ratio analysis to evaluate the breakdown of organic-based getters used to absorb gases and vapors from their surroundings.

High performance liquid chromatography–mass spectrometry and gas chromatography–mass spectrometry, along with numerous extraction methods, are helping to find organosulfur compounds in food more easily, providing researchers better information about the health benefits of these substances.

Exploring the impact of green chemistry on analytical chemistry and GC is the focus of this instalment of "GC Connections".

Direct-injection mass spectrometry (DIMS) and gas chromatography (GC) approaches have some significant differences that are pertinent when analyzing volatile organic compounds (VOCs). We explain.

Everyone is talking about sustainability, and organizations are creating sustainability programs. But what does green chemistry really mean, and how does it apply to gas chromatography?

Pesticides in local surface and groundwaters were purified and enriched with solid-phase extraction, then analyzed using multidimensional gas chromatography coupled to mass spectrometry, with the results compared to those found by gas chromatography–quadrupole mass spectrometry.

GC-MS technology has been used to study the inflammatory mechanism in COVID-19 patients, revealing the possible mechanism of inflammatory response in patients from the perspective of metabolomics.

A new study has demonstrated a practical solution for the reliable compound-specific isotope analysis (CSIA) of trace-level pollutants in complex environmental samples, using 2DGC-IRMS.

New GC–MS research suggests that the presence of hemicellulose impurities in α-cellulose extracted from land plants may compromise reliable application of the 18O/16O ratio for environmental, physiological, and metabolic studies.

While pesticides may be beneficial, they may also cause health risks in foods. In a recent study, scientists created new methods for detecting maximum pesticide residue levels.

A new differential ion mobility spectrometry device has been created that will greatly change how chemicals and substances are found and analyzed.

By performing tissue analysis of caracals in captivity and in their natural African habitats, scientists were able to quantify uptake of toxic chemicals from the environment depending on how polluted they are.

Using gas chromatography and mass spectrometry, a recent study was able to identify several compounds that give specialty coffee their fruity flavors and aromas.

"GC Connections" presents the column's annual review of new developments made in the field of gas chromatography, made available in 2022–2023.

Webinar Date/Time: Wednesday, April 26th, 2023 at 11am EDT | 8am PDT | 4pm BST | 5pm CEST

The monitoring of per- and polyfluoroalkyl substances (PFAS) into food is an important environmental and health concern. Raquel Sendón García, PhD, is a Faculty Member in the Department of Analytical Chemistry of Nutrition and Food Science, and a Faculty of Pharmacy member at the University of Santiago de Compostela in Spain. She has been performing research on food contamination and the presence of potentially harmful chemicals in foods for some time. We recently spoke to her about her work using GC–MS and other analytical techniques to analyze PFAS migration into food from packaging materials.

Webinar Date/Time: Thursday, June 15th, 2023 at 8am PDT | 11am EDT | 4pm BST | 5 pm CEST

Webinar Date/Time: Wed, Mar 29, 2023 2:00 PM ED

Webinar Date/Time: Airing 1: Tuesday March 14, 2023 at 9am EST | 2pm GMT | 3pm CET Airing 2: Tuesday March 14, 2023 at 2pm EST | 1pm CST | 11am PST

Webinar Date/Time: Tuesday, January 31st, 2023 Session 1: 9am EST | 2pm GMT | 3pm CET Session 2: 2pm EST | 11am PST | 7pm GMT

Webinar Date/Time: Thursday, February 16th, 2023 at 8am PST | 11am EST | 4pm GMT | 5 pm CET

Webinar Date/Time: Airing 1: Tuesday January 17, 2023 at 9am EST | 2pm GMT | 3pm CET Airing 2: Tuesday January 17, 2023 at 2pm EST | 1pm CST | 11am PST

Untargeted GC–MS metabolomics with sample derivatization is shown here to be effective for measuring the chemical profiles of traditional and plant-based meat products.

Webinar Date/Time: Tue, Dec 13, 2022 11:00 AM EST

Webinar Date/Time: Monday, November 28 2022 at 11 am EDT

A broad range of trace-level volatile organic compounds was detected in drinking water using headspace–trap sampling.

It is a fact that most of us will be experiencing rising helium costs, and in some cases, caps on supply, or an inability to initiate new supply contracts from providers. Based on my own experiences, and those of colleagues and contacts, I’ve prepared what I hope is a succinct and focused guide on the factors one needs to evaluate to properly inform the decision to switch, and what to expect on the implementation journey.

In this study, the experimental nontargeted screening approach and corresponding data analysis workflows—simultaneously using molecular ion information and structural information—are presented for the molecular identification and authenticity verification process from a brand perfume using GC–ecTOF-MS.