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Articles

How to speed up sample prep time and equivalent acccuracy and precision.

Comparison of PFAS Sample Preparation Between WAX + Dispersive GCB and WAX/GCB Cartridges from Water and Soil Extracts Per Draft EPA 1633

A GC–MS method, coupled with magnetic SPE with multi-walled carbon-nanotube (MWCNT)-coated iron oxide as the adsorbent, was developed for analyzing organophosphate esters in environmental water samples.

Determination of Organophosphate Esters in Water Samples Using Gas Chromatography–Mass Spectrometry (GC–MS) and Magnetic Solid-Phase Extraction (SPE) Based on Multi-Walled Carbon Nanotubes (MWCNTs)

Reducing matrix effects during LC–MS/MS bioanalysis is paramount. Improving sample preparation techniques is the best way to combat this issue.

Innovations and Strategies of Sample Preparation Techniques to Reduce Matrix Effects During LC–MS/MS Bioanalysis 

Multiple-cumulative trapping headspace extraction coupled with high-concentration-capacity tools, such as SPME, enhances sensitivity of volatiles, as illustrated here in food analysis.

Multiple-Cumulative Trapping: A Fascinating Option to Enhance Headspace Profile 

We look at five modern treatments of chromatographic sample extraction, explaining their initial conception and development to shed light on their current roles as analytical tools.

Origins of Sample Preparation Technologies

This symposium looks at various methods used to detect PFAS in foods, cosmetics, packaging, and commercial products. 

Per- and Polyfluoroalkyl Substances: Sources of Human Exposure–How They Got There and How to Detect ThemPer- and Polyfluoroalkyl Substances: Sources of Human Exposure–How They Got There and How to Detect Them

The Dal Nogare award honors an awardee who is selected for contributions to the fundamental understanding of the chromatographic process. This year’s award winner is Professor Apryll Stalcup from Dublin City University. 

Chromatography Forum of Delaware Valley Dal Nogare Award 2021

Currently, sample treatment is still the bottleneck in the development of analytical methods to analyze complex samples, especially for routine analysis where high-tech instruments are not always available. Research on the evaluation of different sample treatments is needed to achieve the sensitivity and selectivity required. This article presents a case study related to the determination of sulphonamides in liver. Different extraction strategies, including solid-liquid extraction (SLE), ultrasound-assisted extraction (UAE), and solid-phase extraction (SPE), were evaluated to produce a simple and effective extraction method.

Sample Treatment in Routine Analysis: A Case Study: Sulphonamides in Liver

HS-SPME-GC–MS is a valuable technique for identifying volatile organic compounds, additives, and degradation products in industrial rubber, car labeling reflection foil, and bone cement materials.

Headspace Solid-Phase Microextraction Coupled with Gas Chromatography–Mass Spectrometry for the Characterization of Polymeric Materials

An excerpt from LCGC’s e-learning tutorial on common solid-phase extraction (SPE) problems at CHROMacademy.com

Solid-Phase Extraction (SPE) | Topics