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Abstract
Comprehensive two-dimensional gas chromatography (GC x GC) is a novel technique which
is rapidly gaining importance for the analysis of complex samples. In the present
review, attention is devoted to the principle and advantages, and main characteristics
such as modulation, column combinations, detector requirements and data processing,
of the technique. Specifically, GC x GC of a variety of real-life samples is discussed
to demonstrate the applicability of the technique, with emphasis on the usefulness
of the ordered-structure principle and on the analyte-identification power provided
by a combination with time-of-flight mass spectrometric detection.