
Liquid chromatography–tandem mass spectrometry (LC–MS/MS) reveals distinct sphingolipid patterns in anorexia and obesity.
Torsten C. Schmidt from the University Duisberg-Essen in Germany discusses how solvent-free microextraction techniques in gas chromatography have developed since their introduction in the mid-1980s, and the advantages of solvent-free microextraction techniques compared to purge-and-trap enrichment.





