Market Profile: Gas Chromatography - - Chromatography Online
Market Profile: Gas Chromatography

E-Separation Solutions

2011 GC regional distribution
In gas chromatography (GC), the sample vapor passes through the column and separates into its components – a separation that is governed by the distribution between the mobile and stationary phases. The degree of separation between the sample and the stationary phase is determined by flow rate, the nature of the stationary phase, the surface area exposed to the carrier gas, and the column temperature. As a result, while solvent changes are commonly used in high performance liquid chromatography (HPLC), GC uses temperature changes to improve separations. As the individual components emerge from the column, the detector obtains a signal.

The GC columns may be of two types: packed or capillary. Packed columns can accept a larger injection volume, but capillary columns have better separating power. There are a number of different detectors available as a function of the analyte constituent. These include thermal and electrolytic conductivity, flame ionization, electron capture, nitrogen–phosphorus, photoionization, mass selective, infrared, and atomic emission detectors.

GC is very well established in the U.S., Western Europe, and Japan, where the installed base is extremely large. In fact, North America and Europe combined account for nearly 60% of the worldwide GC demand. However, lower-end GC systems have become ubiquitous in areas such as Eastern Europe, China, India, and Latin America.

The foregoing data were extracted and adapted from SDi's recently published 12th Edition. For more information, contact Glenn Cudiamat, VP of Research Services, Strategic Directions International, Inc., 6242 Westchester Parkway, Suite 100, Los Angeles, CA 90045, (310) 641-4982, fax: (310) 641-8851, e-mail:


blog comments powered by Disqus
LCGC E-mail Newsletters
Global E-newsletters subscribe here:



Sample Prep Perspectives | Ronald E. Majors:

LCGC Columnist Ron Majors, established authority on new column technologies, keeps readers up-to-date with new sample preparation trends in all branches of chromatography and reviews developments in existing technology lines.

LATEST: The Role of Selectivity in Extractions: A Case Study

History of Chromatography | Industry Veterans:

With each installment of this column, a different industry veteran covers an aspect of the evolution and continued development of the science of chromatography, from its birth to its eventual growth into the high-powered industry we see today.

LATEST: Georges Guiochon: Separation Science Innovator

MS — The Practical Art| Kate Yu:
Kate Yu is the editor of 'MS-The Practical Art' bringing her expertise in the field of mass spectrometry and hyphenated techniques to the pages of LCGC. In this column she examines the mass spectrometric side of coupled liquid and gas-phase systems. Troubleshooting-style articles provide readers with invaluable advice for getting the most from their mass spectrometers.

LATEST: Mass Spectrometry for Natural Products Research: Challenges, Pitfalls, and Opportunities

LC Troubleshooting | John Dolan:

LC Troubleshooting sets about making HPLC methods easier to master. By covering the basics of liquid chromatography separations and instrumentation, John Dolan, Vice President of LC Resources and world renowned expert on HPLC, is able to highlight common problems and provide remedies for them.

LATEST: LC Method Scaling, Part I: Isocratic Separations

More LCGC Chromatography-Related Columnists>>

LCGC North America Editorial Advisory Board>>

LCGC Europe Editorial Advisory Board>>

LCGC Editorial Team Contacts>>

Source: E-Separation Solutions,
Click here