Patent ID: 6223584
Filing Date: 2001-05-01
Classification: G01N

Abstract:
A system for vapor constituents analysis of a media, comprising:a gas chromatographic column, andan in-line preconcentrator assembly having a sampling mode of operation and an injection mode of operation;said preconcentrator assembly including:(a) a trap housing identifying a media receiving compartment formed internally therein,(b) an adsorbent material removably received within said media receiving compartment, and(c) a transfer line unit removably couplable to said trap housing at a first end thereof, said transfer line unit being directly connected to said gas chromatographic column;wherein, in said sampling mode of operation of said preconcentrator assembly, said trap housing being displaced from said transfer line unit, whereby a direct fluid communication path is established between the media and said media receiving compartment within said trap housing;wherein, in said injection mode of operation of said preconcentrator assembly, said trap housing being positioned in the pressure tight engagement with said transfer line unit, whereby fluid communication is established between said media receiving compartment within said trap housing and said gas chromatographic column through said transfer line unit.