Peter Q. Tranchida | Authors

Articles

Cryogenic- and Flow-Modulation Comprehensive Two-Dimensional Gas Chromatography–Mass Spectrometry: Obtaining Similar Chromatographic Performance

In the present research, similar chromatography fingerprints were obtained using finely-tuned cryogenic-modulation (CM) and flow-modulation (FM) comprehensive two-dimensional gas chromatography–mass spectrometry (GC×GC–MS) experimental conditions.

The Past, Present, and Future of Multidimensional Gas Chromatography

The concept of (heart-cutting) multidimensional gas chromatography (MDGC) was introduced shortly after the invention of gas chromatography (GC). In that first experiment, the term “two-stage” was used to define the multidimensional process in applications involving the heart‑cutting of four hydrocarbon fractions, ranging from C5 to C8. The latter were separated first on a nonpolar packed column, and then on a polar one. A rather complex combination of valves enabled two-dimensional (2D) analysis. The great potential of the approach became immediately evident.