Large volume analyte preconcentrator

A large volume preconcentrator device for concentrating analytes, the device comprising:

• a housing for accepting an analyte vapor collection flow;
• means for supporting a plurality of fixed collection surfaces facing a direction of a collection flow, the collection surfaces collectively defining a collection plane where the collection flow reaches the collection surfaces;
• means for collecting analyte on the plurality of collection surfaces during the collection flow;
• means for selectively restricting the collection flow at a position downstream of the plurality of collection surfaces by actuation of a plurality of selectively actuatable dampers, each of which is rotatable about a pivot;
• and
• means for inducing a desorption flow from the collection surfaces.

A large volume preconcentrator device for concentrating analytes, the device comprising:

• a housing that accepts an analyte vapor collection flow;
• a plurality of collection surfaces fixably disposed within said housing, collectively defining a collection plane where the collection flow reaches the collection surfaces;
• a selectively actuatable heater disposed on each of the collection surfaces;
• and
• a plurality of selectively actuatable dampers disposed within said housing and downstream of said plurality of collection surfaces,
• wherein said selectively actuatable dampers are rotatable about a pivot and configured to occupy a first position providing gaps between said dampers for selectively allowing collection flow and a second position wherein said dampers overlap for selectively restricting a collection flow.