A system for interfacing a sampling device and a chromatograph and for pre-concentrating analytes in a sample prior to introducing the sample into the chromatographic column is generally disclosed comprising an interface housing with a first channel and an adsorbent housing with a second channel, which...http://www.google.de/patents/US20060099716?utm_source=gb-gplus-sharePatent US20060099716 - Interface assembly for pre-concentrating analytes in chromatography
