pegasus4dNo longer limited to two analytical dimensions, the Pegasus 4D GC×GC-TOFMS system (LECO, St. Joseph, Michan, USA) provides us with four dimensions of analytical resolutionLECO's Pegasus 4D is a comprehensive two dimensional Gas Chromatograph Time-of-Flht mass spectrometer. Comprehensive two dimensional gas chromatography (GCxGC) allows