Patent ID: 6701774
Filing Date: 2004-03-09
Classification: B01J,G01N

Abstract:
A gas chromatograph having four or more analysis channels for simultaneous analysis of four or more fluid samples, the gas chromatograph comprisingfour or more gas chromatography columns, each of the four or more gas chromatography columns comprising an inlet for receiving a gaseous mobile phase that includes a gaseous sample, a separation media effective for separating at least one separated component of the gaseous sample from other components thereof, and an outlet for discharging the separated gaseous sample, and a microdetector array comprising four or more thermal conductivity microdetectors for detecting the thermal conductivity of said at least one separated component of the gaseous sample, said thermal conductivity microdetectors being detachably mounted on a substrate, each of the four or more thermal conductivity microdetectors having an inlet port in fluid communication with the outlet of one or more of the gas chromatography columns for receiving a separated gaseous sample, a detection cavity, a thin-film detection filament within the detection cavity for detecting at least one separated component of the separated gaseous sample, and an outlet port for discharging the separated gaseous sample.