Gas Chromatography

We continue the previous article's backflush discussion with a description of the most common form of backflush: post-column backflush.

In this technical article we introduce the concepts of backflushing capillary columns.

Continuing the previous discussion of the most popular GC detector, the FID, we cover deviations from typical unit carbon response, optimization and troubleshooting.

In this technical article we initiate a discussion on the workhorse detector of gas chromatography: the flame ionization detector.

In Part 3 we bring together the retention mechanism concepts discussed earlier to form a simple view of the nature of selectivity in liquid stationary phases used in gas chromatography.

To fully grasp the concepts of retention and selectivity of GC stationary phases, one must first understand the fundamental intermolecular interactions that lead to retention. In the second part of this series we discuss polar interactions; the...

To fully grasp the concepts of retention and selectivity of GC stationary phases, one must first understand the fundamental intermolecular interactions that lead to retention. This article discusses the most dominant of those interactions –...

Here, we tackle another potential problem of hot split injection: sample decomposition. Decomposition changes the nature of components in the original sample, affecting the “recovery” of target compounds. This in turn introduces errors in analytical...

This technical article discusses the process of hot split injections and the sources of discrimination, which are one of the potential downsides of this technique.

This article will discuss split injections with a hot split/splitless inlet. This is the most popular inlet and sampling mode for capillary GC. The focus will be on the basic concepts and flow paths. Later articles will cover liner choice,...

This technical article provides a general overview of the purpose of GC columns, key processes involved and a description of differences between them.

Would you like to learn about a new extraction technique that provides a valuable extension to regular solid-phase microextraction? If so, this on-demand webinar will teach you all about the benefits of thin film solid-phase microextraction...

Do you need to increase productivity and decrease downtime in your laboratory? This on-demand webinar introduces Agilent’s new suite of intelligent gas chromatographs that will help you reach this goal.

Shimadzu has released the Nexis SCD-2030 sulfur chemiluminescence detection system consisting of a Nexis GC-2030 high-performance GC and the newly developed SCD-2030 sulfur chemiluminescence detector. With this product, Shimadzu serves a growing...

In this interview, John Quick, Principal Scientist, ALS Environmental, Coventry, UK discusses trace level organic analysis of pollutants in environmental water samples. The interview was conducted at WWEM 2018 (Water, Wastewater and Environmental...