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Journal Highlight: Determination of ethyl glucuronide and fatty acid ethyl esters in hair samples

Date: Apr 17, 2017

Author: separationsNOW

Two methods for the routine assessment of alcohol exposure by hair analysis have been presented, combining analysis of ethyl glucuronide by LC/MS/MS and fatty acid ethyl esters by GC/MS/MS.

Read More thumbnail image: Journal Highlight Determination of ethyl glucuronide and fatty acid ethyl esters in hair samples

Cancer-causing cola compounds caught by GC-MS/MS

Date: Apr 2, 2017

Author: Ryan De Vooght-Johnson

2-Methylimidazole and 4-methylimidazole, compounds found in cola drinks and dark beers, are suspected to be possible carcinogens on the basis of animal studies. Scientists from Woosuk University in South Korea have developed an improved method for methylimidazole analysis using derivatisation followed by GC-MS/MS.

Read More thumbnail image: Cancer-causing cola compounds caught by GC-MSMS

Journal Highlight: Qualitative characteristics and comparison of volatile fraction of vodkas made from different botanical materials by comprehensive 2D GC and the electronic nose based on the technology of ultra-fast GC

Date: Mar 20, 2017

Author: separationsNOW

GC×GC and an electronic nose-based ultra-fast GC with chemometric analysis have both been used to distinguish between the vodkas produced from different raw materials.

Read More thumbnail image: Journal Highlight Qualitative characteristics and comparison of volatile fraction of vodkas made from different botanical materials by comprehensive 2D GC and the electronic nose based on the technology of ultra-fast GC

From failing fertility to faulty fatty acids: GC reveals all

Date: Mar 15, 2017

Author: Ryan De Vooght-Johnson

Male infertility is often caused by poor sperm motility (i.e. poor ‘swimming’), also known as asthenozoospermia, but the causes of this condition are not well understood. Researchers from Nanjing Tech University compared the concentrations of a range of seminal fatty acids and other metabolites from those with asthenozoospermia and healthy controls using GC-MS, the results showing some significant differences between the two groups.

Read More thumbnail image: From failing fertility to faulty fatty acids GC reveals all

The search for stimulant alkaloids: from MS sources to sources of highs

Date: Mar 1, 2017

Author: Ryan De Vooght-Johnson

The leaves of the qat (or khat) tree are widely chewed as a stimulant in Yemen and the Horn of Africa; they contain the stimulant alkaloids cathinone, cathine and (1R,2S)-norephedrine. Researchers from Colorado State University examined leaves from 43 related plant species by GC/MS, using a double derivatisation method, in order to determine if any of these contained the same stimulant alkaloids.

Read More thumbnail image: The search for stimulant alkaloids from MS sources to sources of highs

Phthalate separation success can be secured by GC-MS

Date: Feb 15, 2017

Author: Ryan De Vooght-Johnson

Phthalate plasticisers are ubiquitous in the environment, and have long been a source of health concern, particularly in their role as endocrine disrupters. Phthalate exposure has traditionally been determined by LC-MS/MS on metabolites in urine; however, a recent paper from Toshiaki Yoshida from the Osaka Prefectural Institute of Public Health demonstrated a useful, inexpensive derivatisation/GC-MS method for detecting these metabolites.

Read More thumbnail image: Phthalate separation success can be secured by GC-MS

Journal Highlight: Recent progress of chiral stationary phases for separation of enantiomers in gas chromatography

Date: Feb 13, 2017

Author: separationsNOW

Recent progress on novel chiral stationary phases based on cyclofructan derivatives and chiral porous materials has been reviewed from original research papers published since 2010.

Read More thumbnail image: Journal Highlight Recent progress of chiral stationary phases for separation of enantiomers in gas chromatography

Journal of Separation Science Celebrates 40th Volume

Date: Feb 8, 2017

Author:

The Journal of Separation Science was born in 1978 with the name, Journal of High Resolution Chromatography, and this year celebrates its 40th birthday. To celebrate, we've created a virtual issue containing the journal's top 40 cited papers over the last four decades; and it's free for you to read for the whole of 2017.

Read More thumbnail image: Journal of Separation Science Celebrates 40th Volume

Smart drugs crack up due to GC heat

Date: Feb 1, 2017

Author: Ryan De Vooght-Johnson

Modafinil has legitimate medical uses for combating sleeping disorders, but it is increasingly being used, along with a number of its analogues, as a so-called ‘smart drug’ or ‘nootropic’, in order to improve mental performance. A research team from Dublin and Liverpool examined the detection of these compounds by GC-MS, where their thermal breakdown on injection into the GC can complicate results.

Read More thumbnail image: Smart drugs crack up due to GC heat

Journal Highlight: Identifying the chemical composition of decomposed residues from cyanobacterial bloom biomass by pyrolysis-GC/MS

Date: Jan 16, 2017

Author: separationsNOW

The effects of temperature and sediment on the chemical composition of cyanobacterial biomass residue was investigated in a microcosm experiment by pyrolysis-GC/MS and FTIR spectroscopy.

Read More thumbnail image: Journal Highlight Identifying the chemical composition of decomposed residues from cyanobacterial bloom biomass by pyrolysis-GCMS
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