Large volume analyte preconcentrator
First Claim
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1. A large volume preconcentrator device for concentrating analytes, the device comprising:
- a housing that accepts an analyte vapor collection flow;
a plurality of fixed supports disposed within said housing, each of said plurality of supports respectively defining a collection surface, and the plurality of supports collectively defining a collection plane where the collection flow reaches the collection surfaces;
a selectively actuatable heater disposed on the collection surface of each of said plurality of supports;
a sorbent coating disposed on the collection surface of each of said plurality of supports; and
a plurality of selectively actuatable dampers disposed within said housing and being rotatable about a pivot for selectively restricting a collection flow,wherein the plurality of selectively actuatable dampers are provided within the housing downstream of the collection plane, for selectively allowing and restricting collection flow.
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Abstract
A large volume preconcentrator device for concentrating analytes. A housing accepts an analyte vapor flow, and a plurality of collection surfaces are disposed within the housing. A selectively actuatable heater is disposed on each of the plurality of collection surfaces. At least one selectively actuatable damper is disposed within the housing for selectively restricting a collection flow.
84 Citations
14 Claims
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1. A large volume preconcentrator device for concentrating analytes, the device comprising:
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a housing that accepts an analyte vapor collection flow; a plurality of fixed supports disposed within said housing, each of said plurality of supports respectively defining a collection surface, and the plurality of supports collectively defining a collection plane where the collection flow reaches the collection surfaces; a selectively actuatable heater disposed on the collection surface of each of said plurality of supports; a sorbent coating disposed on the collection surface of each of said plurality of supports; and a plurality of selectively actuatable dampers disposed within said housing and being rotatable about a pivot for selectively restricting a collection flow, wherein the plurality of selectively actuatable dampers are provided within the housing downstream of the collection plane, for selectively allowing and restricting collection flow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A large volume preconcentrator device for concentrating analytes, the device comprising:
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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.
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14. A large volume preconcentrator device for concentrating analytes, the device comprising:
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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.
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Specification