Abstract
The combination of gas chromatography, one of the most powerful separation techniques, with mass spectrometry, one of the most powerful and versatile detectors, has lead to the most powerful and versatile analytical technique, gas chromatography–mass spectrometry (GC–MS). Both a qualitative and a quantitative technique, GC–MS is extremely suitable to the analysis of unknowns, an important quality in a forensic laboratory. The true power comes from the fact that for each data entry in the chromatogram, a full mass spectrum is available, thus providing structural information regarding the eluting substance at any given time. The separation power combined with the analytical power allows for a quasi-certain identification of the analytes constituting a complex mixture.
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