Invented by J. Phillips in 1989, comprehensive GC×GC has strong
chromatographic resolving power; from its original petrochemical
applications it has been extended to many others. However, coelutions
with matrix peaks are often observed and a higher separation power is
required. The coupling of GC×GC to mass spectrometry (MS) provides
an additional dimension for the identification of compounds concealed
under contour plot displays used in GC×GC.
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