Multidimensional Gas Chromatography

For accurate results, gas chromatography experts rely on sharp peaks and baseline resolution. Multidimensional separation provides the resolution needed when dealing with complex matrices.

When performing chromatographic analysis of real-world samples, analysts often must deal with complex sample types such as essential oils and petroleum fractions or complex matrices like biological fluids, foods, sludge, or polymers. Once the sample has been prepared for analysis, separating all the individual compounds present through a single chromatographic separation can be challenging due to the compounds having different ranges of polarity, boiling point, solubility, MW, and concentration. Therefore, to achieve the separation needed for these types of samples, it is necessary to go beyond using a single chromatographic dimension and use multidimensional techniques.

When performing aroma analysis or solving off-odor problems, more than just resolution is required. Many important odor-related compounds have low odor thresholds, so it is necessary to supply a large enough analyte mass on the column to be detected by a mass spectrometer. GERSTEL’s unique Sensory Directed Analysis (SDA) method combined with Selectable 1D/2D-GC-MS heart-cutting and trapping system is the only means available to detect these compounds effectively.

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