Gas Chromatography

Drugs get a second chance to enter our bodies - via wastewater and fish…

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Triple detection GPC/SEC combines measurements from multiple detectors to offer not only increased amounts of data, but also increased amounts of information, which is made available by the combination of different detectors (and unobtainable using individual detectors separately). The theory of triple detection GPC/SEC is described here.

This application note describes the analyses of a variety of aqueous (water-soluble) cellulose derivatives using the OMNISEC triple detection system and the subtle, yet distinct differences between these different derivatives that can be parsed out by the OMNISEC system

In this application note, molecular weight data from the Viscotek SEC-MALS 20 is combined with measurements of Rg and IV to study the structure of different polysaccharides including pullulan, dextran, hydroxypropyl cellulose (HPC), pectin and gum Arabic. The differences between conformation and Mark-Houwink plots are also studied.

The investigative power of multiple detectors. Here, we describe the analysis of a semi-purified protein mixture containing β-amylase. Step-by-step, we show how different properties of the proteins elicit a specific response in each detector and how coupling this data can be qualitatively and quantitatively evaluated.

Persistent organic pollutants (POPs) encompass a wide variety of contaminants, but they share one thing in common: they have the potential to hit headlines and cause huge disruption to the food and feed industry.

Extraction of air sampling filters for the determination of dioxins using BUCHI’s SpeedExtractor E-914

Sitting Down With… Carlo Bicchi, Professor of Pharmaceutical Biology at the University of Turin, and member of the scientific committee for the 40th International Symposium on Capillary Chromatography and 13th GC×GC Symposium (Riva 2016), Italy.

A 2015 Innovation Award-winning “fastGC” module enhances proton transfer reaction time-of-flight analyzer performance by adding an optional near real-time chemical pre-separation step. Here’s the story behind its development.