MULTIDIMENSIONAL GAS CHROMATOGRAPHY APPARATUS AND ANALYTE TRANSFER PROCEDURE USING A MULTIPLE-COOL STRAND INTERFACE

摘要

The invention provides a MDGC apparatus comprising a cryotrapping means capable of cooling at least twice a portion of a chemical sample and provided with detector means disposed upstream of the cryotrap and allowing identification of the said portion of the chemical sample to control the residence time of the latter in the cryotrapping means.