Method and Apparatus for Preconcentrating a Gaseous Sample

摘要

A system for concentrating an analyte gas in a gas stream of an analytical system is provided. The system comprises at least one separation device, at least one gas inlet line, at least one detector, at least one gas outlet line, a first split line in connected to the gas inlet line, and a first split valve for controlling gas flow in the first split line. Also provided is a method for concentrating an analyte gas.

主权项

1. A system for concentrating an analyte gas in a gas stream of an analytical system, the system comprising at least one separation device, for separating components of an analyte gas;
at least one gas inlet line, for delivering the analyte gas from a supply of analyte gas to the separation device; at least one detector, for detecting components of the analyte gas; at least one gas outlet line, for delivering the components from the separation device to the detector; a first split line in fluid communication with the gas inlet line at a first junction, and a first split valve for controlling gas flow in the first split line; wherein opening of the first split line releases a part of a gas flow through the first split line and thereby reduces a flow rate through the separation device.