Microtrap sample concentrator and methods of use

Details Microtrap sample concentrator and methods of use Microtrap sample concentrator and methods of use

1996-03-01

1998-08-18

Spitzer, Robert

Gas separation: processes

Chromatography

95 87, 95 89, 95114, 95126, 95143, 96105, 96144, 96146, B01D 1508, B01D 5304

Patent

active

057953686

ABSTRACT:
A microtrap sample concentrator useful for concentrating a sample of purged gas containing analytes for delivery to an analytical instrument, including: a tube containing at least one sorbent material which retains or traps analytes; where greater than 30% of all trapped analytes are directly delivered to an analytical instrument at a desorption flow rate of one to three cc/min, without splitting or cryogenic focusing the trapped analytes; where delivery of the trapped analytes to the analytical instrument is achieved by passing the trapped analytes through a passage being selectively connectable between the microtrap and the analytical instrument, the passage connected to a vent; where the temperature of the passage is not lower than ambient room temperature; and where the passage is heated to a temperature sufficient to vaporize water in the passage and to expel the vaporized water out of the vent.

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