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Journal Highlight: Prediction of designer drugs: Synthesis and spectroscopic analysis of synthetic cathinone analogs that may appear on the Swedish drug market

Date: May 14, 2018

Author: separationsNOW

Six new synthetic cathinones that have not yet appeared in any Swedish drug seizures have been synthesized and used with 42 known cathinones to show that a combination of GC/MS and GC-FTIR is required for successful differentiation.

Read More thumbnail image: Journal Highlight Prediction of designer drugs Synthesis and spectroscopic analysis of synthetic cathinone analogs that may appear on the Swedish drug market

GC on waste streams gives ‘speed’ reaction schemes

Date: May 7, 2018

Author: Ryan De Vooght-Johnson

Waste solutions from illicit amphetamine production need to be analysed, both in order to provide useful intelligence for enforcement agencies, and also because they are a potential environmental hazard. A team of scientists from Germany (University of Rostock and the Federal Criminal Police Office, Wiesbaden) and the Netherlands (Netherlands Forensic Institute, The Hague) used solid-phase extraction and GC to examine the compounds in waste solutions produced by different variations of the Leuckart route...

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NIST spectral library matching was poor, puzzling Livermore

Date: May 3, 2018

Author: Ryan De Vooght-Johnson

The NIST library is routinely used for identifying compounds from their mass spectra, but occasionally the matches between experimental and library data are poor. Researchers from the Lawrence Livermore National Laboratory (Livermore, California) found that an impurity in a sample of a chemical incapacitating agent gave a mass spectrum that differed significantly from that in the NIST library.

Read More thumbnail image: NIST spectral library matching was poor puzzling Livermore

The force of Orbitrap can thwart doping from the dark side of sport

Date: May 2, 2018

Author: Ryan De Vooght-Johnson

The use of anabolic steroids by athletes for doping purposes remains a serious problem, but existing analytical methods tend to give poor detection of some steroids, particularly novel ‘designer steroids’, which are often not found in databases. Researchers from the Federal University of Rio de Janeiro and Thermo Fisher (Austin, Texas) devised a new method using GC and an Orbitrap mass spectrometer to detect both known and novel anabolic steroids, along with other doping compounds.

Read More thumbnail image: The force of Orbitrap can thwart doping from the dark side of sport

Journal Highlight: Simultaneous determination of glycol ethers and their acetates in cosmetics by GC–MS

Date: Apr 16, 2018

Author: separationsNOW

A GC/MS method has been developed for the simultaneous determination of ten kinds of toxic glycol ethers and their acetates in cosmetics, with method validation from different laboratories.

Read More thumbnail image: Journal Highlight Simultaneous determination of glycol ethers and their acetates in cosmetics by GCMS

Fungicide assay by GC gives good results with ECD

Date: Apr 9, 2018

Author: Ryan De Vooght-Johnson

The fungicide dimethachlon is widely used on rice plants in China, despite its relatively high level of kidney toxicity. Scientists from the Guizhou University (Guiyang, China) developed a new GC method using electron capture detection (ECD) to detect dimethachlon residues in paddy soil, rice straw, rice husks and rice grains.

Read More thumbnail image: Fungicide assay by GC gives good results with ECD

2D GC defeats 1D on compounds from the water flea

Date: Apr 6, 2018

Author: Ryan De Vooght-Johnson

Two-dimensional GC, where the output of one column is put through another, is a powerful technique that is being increasingly applied to complex mixtures of metabolites. Scientists from the Sharif University of Technology (Tehran) and IDAEA-CSIC (a government institute in Barcelona) compared the effectiveness of ordinary GC-MS with that of two dimensional GC plus time-of-flight MS for metabolite detection in Daphnia (water fleas), employing chemometric techniques to manipulate the data.

Read More thumbnail image: 2D GC defeats 1D on compounds from the water flea

GC is fine for compounds in wine

Date: Apr 1, 2018

Author: Ryan De Vooght-Johnson

The amount of pressing that takes place during wine production can affect the wine’s chemical composition and hence its flavour. Scientists from Turkey have compared wine made from free-run liquid (i.e. unpressed) with that produced from pressed liquid, employing GC-MS and GC-olfactometry to look at flavour compounds, while LC-MS/MS was used to examine anthocyanins.

Read More thumbnail image: GC is fine for compounds in wine

Journal Highlight: Differentiation of isomeric methylanilines by imidization and gas chromatography/mass spectrometry analysis

Date: Mar 19, 2018

Author: separationsNOW

Isomeric methylanilines can be differentiated by imidization to the N-methylbenzylidene benzenamines followed by GC/MS analysis with electron ionisation.

Read More thumbnail image: Journal Highlight Differentiation of isomeric methylanilines by imidization and gas chromatographymass spectrometry analysis

GC has met the teddy bear threat

Date: Mar 15, 2018

Author: Ryan De Vooght-Johnson

Perfume compounds are often added to soft toys by their manufacturers, but this practice may expose children to potential allergens. Scientists from the Chinese Academy of Inspection and Quarantine in Beijing devised a new method using headspace analysis and GC-MS to detect 58 possible allergens in soft toy fibres.

Read More thumbnail image: GC has met the teddy bear threat
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