Gas Chromatography

Oct 01, 2017
LCGC Europe
In this study, an empirical assessment of summation integration (using the lowest baseline point in user-defined tR windows) was conducted involving 490 low-pressure GC–MS/MS analyses of 70 pesticides in 10 common fruits and vegetables over the course of 10 days.
Sep 01, 2017
LCGC North America
When data change over time, you may be able to tease out the causes by conducting a time-series analysis or by looking at various forms of correlation.
Aug 01, 2017
LCGC North America
A quick step-by-step guide for optimizing GC temperature programming.
Aug 01, 2017
LCGC North America
Leading separation scientists share their perspectives on current challenges in separation science and where the field is heading. Click the title to view the full article.
Jul 01, 2017
LCGC North America
A method was developed to address the constraints encountered when measuring methane levels during the degassing process.
Jul 01, 2017
LCGC North America
If you understand how your system is affected by outside influences, you can take control of the variables.
Jun 01, 2017
LCGC Europe
Some 50 years after Giddings’s iconic comparison of the separation speed of gas chromatography (GC) and liquid chromatography (LC), the authors revisit this comparison using kinetic plots of the current state‑of‑the-art systems in LC, supercritical fluid chromatography (SFC), and GC. It is found that, despite the major progress LC has made in the past decade (sub-2-µm particles, pressures up to 1500 bar, core–shell particles), a fully optimized ultrahigh-pressure liquid chromatography (UHPLC) separation is still at least one order of magnitude slower than capillary GC. The speed limits of packed bed SFC are situated in between.
May 01, 2017
LCGC North America
Annual review of new developments in the field of GC
Mar 01, 2017
LCGC North America
Changing just one variable at a time is often the best approach.
Feb 07, 2017
The Column
Recent advances in vacuum ultraviolet (VUV) spectroscopy have allowed for the application of this technology as a chemical detection platform for gas chromatography (GC). This technique is known as GC–VUV. A GC–VUV detector can produce highly characteristic absorbance spectra for nearly all chemical species in the wavelength region of 125–240 nm. This enables not only identification but also robust quantitation of a variety of compounds separable by gas chromatography, including water. This article describes the results of a pilot study focused on trace water determination in common organic solvents using an ionic liquid stationary phase GC column in a GC–VUV platform.
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