GC @ separationsNOW

The Gas Chromatography channel covers all techniques used for the separation of gases, in addition to the supercritical phase.

This includes multidimensional techniques (e.g. GCxGC) and hyphenated techniques (e.g. GC-MS).

Gas Chromatography

Monthly Highlight

Last Month's Most Accessed Feature: GC-MS defeats the doping steroid cheats

Doping with anabolic steroids remains a significant problem in many sports, particularly since identification of these compounds and many of their metabolites is hampered by their relatively short lifetimes in the body. Scientists from Ghent University in Belgium used GC-MS with chemical ionisation to detect novel long-lived metabolites from the anabolic steroids oxymesterone and mesterolone.

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2018 Free Sample Issues of Key Analytical Science Journals

The 2018 free sample issues of all our Analytical Chemistry journals are now available!

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Advertorial Feature

Shimadzu Europa
Analysis of mineral oil in environmental samples according to H53

thumbnail image: <font size=3>Shimadzu Europa</font><br />Analysis of mineral oil in environmental samples according to H53

Since mineral oil hydrocarbons are difficult to biodegrade, it is very important to control the contamination of environmental samples by MOHs. The analysis of mineral oil hydrocarbons in drinking water, surface water, and waste water is defined by the European standard EN ISO 9377-2, colloquially referred to as H53. The Nexis GC-2030 with OCI-2030 injector enables efficient H53 measurements as short narrow-bore columns can be combined with a retention gap or a simple on-column liner. With the help of...

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Ezines

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Breaking the mould with X-ray APCI

Ryan De Vooght-Johnson

Dec 11, 2018

thumbnail image: Breaking the mould with X-ray APCI

Mould species can be detected by identifying their volatile metabolites by GC-MS, but electron ionisation often gives confusing output, with weak or non-existent molecular ions and multiple fragment ions. Scientists from the University of Potsdam and the Technical University of Berlin examined the volatile compounds produced from mould species growing on barley grains by GC-MS with atmospheric-pressure chemical ionisation (APCI) using an X-ray source. 

The δ13C values of some commercial steroid preparations containing nandrolone, measured using GC–C–IRMS, overlap with the endogenous range, which could prevent the confirmation of nandrolone administration using GC–C–IRMS in anti‐doping cases.

The continued use of anabolic steroids in sport is a challenge to anti-doping laboratories, which need to have methods that can detect low levels of these drugs. A team of scientists from Anti-Doping Lab Qatar in Doha, Wageningen University and the University of Groningen (the latter two both Netherlands) compared the effectiveness of quadrupole time-of-flight and quadrupole-Orbitrap mass spectrometry for detecting anabolic steroids in urine samples.

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Education

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Selected key technologies of the analytical science industry are discussed by Steve Down with reference to burgeoning application areas and the scope for future improvements.

We are proud to announce a new series of educational webinars run in collaboration with Chromedia, COAST, and SciMind, a product of the American Chemical Society. These webinars will build into a must-have set of tutorial materials for the analytical scientist.

Professor Mario Thevis discusses the fundamentals of sports drug testing. A selection of compounds, new challenges, and methods currently employed in doping control laboratories are discussed.

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Journals

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The Journal of Mass Spectrometry (JMS) publishes papers on a broad range of topics of interest to scientists working in both fundamental and applied areas involving the study of gaseous ions.

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