9 results about "Comprehensive two-dimensional gas chromatography" patented technology

Comprehensive Two-dimensional gas chromatography, or GCxGC is a multidimensional gas chromatography technique that was originally described in 1991 by Professor Phillips and his student Zaiyou Liu . GCxGC utilizes two different columns with two different stationary phases. In GCxGC, all of the effluent from the first dimension column is diverted to the second dimension column via a modulator. The modulator quickly traps, then "injects" the effluent from the first dimension column onto the second dimension. This process creates a retention plane of the 1st dimension separation x 2nd dimension separation.