Parallel Column Gas Chromatography

The focus of this research centers on the development of parallel column gas chromatography as a general analytical tool for trace detection of pollutants. Parallel column GC involves replacing the single column used in conventional GC separations with a parallel set of columns having different stationary phases. Effluents from injected samples are split among the parallel columns and recombined at the detector. Each compound is detected as a unique sequence of peaks due to different retention properties on the various GC stationary phases. This provides a new dimension of analytical information and increases the degree of confidence in analytical identifications. MS and MS/MS provide the necessary detector selectivity to allow sufficient generation of peak capacity. Multidimensional chromatography allows further selectivity optimization.