November 15th 2024
Here is some of the most popular content posted on LCGC International this week.
Breath Diagnostics Using Chromatography for COVID-19 and Triage Applications
August 4th 2021Professor Paul Thomas from the Centre for Analytical Science at Loughborough University in Leicestershire, UK, discusses the role of a rapid breath diagnostic method for COVID-19 using GC–IMS and the wider impact and realities of field breath testing and analysis through the European Toxi-Triage project.
Advances in Asymmetrical Flow Field-Flow Fractionation (AF4)
June 4th 2021Lars Nilsson from the Department of Food Technology, Engineering and Nutrition, Faculty of Engineering, in Lund, Sweden, discusses the evolution of asymmetrical flow field-flow fractionation (AF4) in bioanalysis for the analysis of therapeutic proteins.
Determining the Sex of Skeletons Hundreds of Year Old with NanoLC–MS/MS
March 16th 2021Rebecca Gowland and her colleagues in the Department of Archaeology at Durham University in the United Kingdom have tested, for the first time, the applicability of a new method of sex estimation utilizing enamel peptides from a sample of permanent and deciduous teeth at different stages of mineralization, from nonadults of unknown sex, including perinates, and using a minimally destructive acid etching procedure and subsequent nano liquid chromatography– tandem mass spectrometry. She spoke to us about her efforts.
Investigating Arson Attacks Using Multidimensional Gas Chromatography (GC×GC)
September 7th 2020A novel chemical fingerprinting method has been developed using multidimensional chromatography and multivariate analysis to investigate potential arson attacks. The Column spoke to Oliver Jones and Jessica Pandohee of RMIT University in Melbourne, Australia, about their research in this field.
Practical Two-Dimensional Liquid Chromatography in Drug Metabolism Studies and Bioanalysis
June 30th 2020Filip Cuyckens from Janssen R&D in Belgium spoke to LCGC Europe about recent innovative approaches he and his team developed to support drug metabolism and pharmacokinetic studies, and the inventive role that two-dimensional liquid chromatography (2D-LC) plays in his laboratory to boost sensitivity, solve recovery issues, and increase overall efficiency.
Three-Dimensional Chiral HPLC Analysis of Extraterrestrial Amino Acids in Carbonaceous Chondrites
January 20th 2020Aogu Furusho from the Graduate School of Pharmaceutical Sciences in Kyushu University, Fukuoka, Japan, spoke to us about his development of a highly selective three-dimensional chiral high performance liquid chromatography (HPLC) system for the determination of extraterrestrial amino acids in carbonaceous chondrites.
Sizing Up Size-Exclusion Chromatography (Part 2)
November 1st 2019In the second part of this interview on size-exclusion chromatography (SEC) André Striegel discusses the benefits of the technique to analyze nanoparticles and quantum dots, the complementary role of hydrodynamic chromatography (HDC), and the future of SEC in two-dimensional liquid chromatography (2D-LC) separations.
A Multi-Analyte LC–ESI-MS/MS Method to Analyze BPA, BADGE, and Related Analytes
October 1st 2019LCGC Europe interviewed Stefan van Leeuwen from Wageningen Food Safety Research (WFSR), in Wageningen, The Netherlands, on his novel multi-analyte approach to investigate bisphenol A (BPA), bisphenol A diglycidyl ether (BADGE), and their analogues using liquid chromatography–electrospray ionization tandem mass spectrometry (LC–ESI-MS/MS).
Categorizing Olive Oil Using Untargeted GC–MS with a Multivariate Statistical Approach
October 1st 2019Carlos Sales and Joaquin Beltrán from The Research Institute for Pesticides and Water at the University Jaume I, in Castellón, Spain, discuss a novel untargeted gas chromatography–mass spectrometry (GC–MS) method, incorporating dynamic headspace (DHS) with thermal desorption and a novel deconvolution approach, to classify olive oil.
The Challenges of Climate Change for Wine Production
September 10th 2019Heatwaves are significantly affecting the consistency and quality of wine production. The Column spoke to Julia C. Gouot from the National Wine and Grape Industry Centre in Australia about the importance of chromatography to understand the effects of temperature change on grape physiology and composition.
New Mass Spectrometry Measurement Tools for Characterizing Individual Cells
September 9th 2019New developments in measurement science are providing chemical information on single cells. Single-cell chemical assays provide unique information on cell heterogeneity and allow detailed studies of the metabolome and proteome for both snapshot and time-resolved studies. Recent papers describe multimodal chemical imaging, single-cell MALDI-MS supervised by immunocytochemical classification, integrating mass spectrometry with microphysiological systems for improved neurochemical studies, high throughput approaches, and others. This interview with Jonathan Sweedler explores the latest developments in mass spectrometry and separations for single cell analysis.
Sizing Up Size-Exclusion Chromatography
August 1st 2019André Striegel spoke to LCGC Europe about innovations in size-exclusion chromatography (SEC) in polymer analysis, including the benefits of hyphenating SEC with on-line multi-angle static light scattering (MALS) and differential refractometry (DRI) detection, the non-trivial nature of a “trivial” solution, the complementary value of “interaction” polymer liquid chromatography (LC) techniques, and the role of quintuple detection in practice.
The Quest for Greener Sample Preparation in Food Analysis
January 17th 2019When analytical chemists apply green chemistry approaches, which seek to minimize negative environmental effects, an important area of focus is reducing the consumption of toxic solvents, such as those used in extraction steps in sample preparation. Developing and testing greener extraction processes for food analysis is a major focus of Elena Ibáñez, a research professor at the Institute of Food Science Research (CIAL-CSIC) in Madrid, Spain.
The Future of Chromatographic Method Development in Pharma
September 24th 2018Analytical chemists are always seeking to make method development more efficient. For nearly two decades, Chris Welch led his teams at the Merck & Co. to constantly drive innovation in this area. Following his recent retirement from the company last year, he and his colleagues wrote a paper about the current state of method development for pharmaceutical research and where it is heading. He recently spoke to us about this topic.
Analyzing Artificial Sweeteners as Environmental Contaminants
June 21st 2018The Column spoke to Núria Fontanals, a senior researcher at the Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, Spain, about her work investigating the impact of artificial sweeteners as environmental pollutants using hydrophilic interaction chromatography (HILIC) and the broader role of HILIC in environmental analysis.
Evaluating Marine Algae for Therapeutic Effects
May 15th 2018Snezana Agatonovic-Kustrin, a professor in pharmaceutical chemistry at Monash University, in Kuala Lumpur, Malaysia, spoke to The Column about the development of a method to evaluate antidiabetic and antioxidant activity in marine algae using high-performance thin-layer chromatography (HPTLC)-direct bioautography.
Determining the Presence of Ancient Cereals Using GC–MS AND HPLC–MS
March 20th 2018The Column spoke to Erika Ribechini, Associate Professor of analytical chemistry in the Department of Chemistry and Industrial Chemistry of the University of Pisa, Italy, about her research into cereals in ancient diets and the role of chromatography in establishing their importance.
LCGC’s 2018 Emerging Leader Award in Chromatography Winner: Zachary S. Breitbach
March 13th 2018Zachary S. Breitbach, the 2018 winner of the LCGC Emerging Leader in Chromatography award, received his PhD in 2010 from the University of Texas at Arlington (UTA). Subsequently, he worked as a research scientist at UTA while simultaneously aiding in the launch of AZYP Separations and Analytics, a chromatographic materials company. Currently, he is a senior scientist at AbbVie. Breitbach has already made important contributions to both high performance liquid chromatography (HPLC) and gas chromatography (GC). In GC, he played a fundamental role in the development, synthesis, characterization, and utilization of highly thermally stable, high viscosity ionic liquids as new GC stationary phases. Two of the ionic liquids he developed were subsequently commercialized. In HPLC, his work covers enantiomeric separations, hydrophilic interaction chromatography (HILIC), ultrafast and high efficiency separations, supercritical and subcritical fluid separations, core–shell bonded phases, and interfacing HPLC to paired io