Patent ID: 6074461
Filing Date: 2000-06-13
Classification: G01N

Abstract:
A chromatograph for analysis of an analyte, comprising:an inlet for receiving a carrier fluid stream and a sample containing the analyte, and in response, providing a sample/fluid mixture;a separation column connected to the inlet for receiving the sample/fluid mixture and for providing a column effluent stream;a detector for receiving the column effluent stream and for providing a detector output stream, whereby the detector provides a detector signal representative of a characteristic of the analyte; anda gas recycling system for a) receiving a received gas stream provided in the form of the detector output stream and a portion of the carrier fluid stream not present in the sample/fluid mixture, b) purifying the received gas stream to provide a purified gas stream, and c) pressurizing the purified gas stream so as to provide a recycled carrier gas stream,such that the recycled carrier gas stream may be made available for operating the chromatograph.