Liquid-absorption preconcentrator sampling instrument

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:867639

Zaromb, Solomon ^[1]

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1. Hinsdale, IL

A system for detecting trace concentrations of an analyte in air and includes a preconcentrator for the analyte and an analyte detector. The preconcentrator includes an elongated tubular container in which is disposed a wettable material extending substantially the entire length of the container. One end of the wettable material is continuously wetted with an analyte-sorbing liquid, which flows to the other end of the container. Sample air is flowed through the container in contact with the wetted material for trapping and preconcentrating the traces of analyte in the sorbing liquid, which is then collected at the other end of the container and discharged to the detector. The wetted material may be a wick comprising a bundle of fibers, one end of which is immersed in a reservoir of the analyte-sorbing liquid, or may be a liner disposed on the inner surface of the container, with the sorbing liquid being centrifugally dispersed onto the liner at one end thereof. The container is preferably vertically oriented so that gravity effects the liquid flow.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4977095
• OSTI ID: 867639
• Country of Publication: United States
• Language: English

Related Subjects

liquid-absorption
preconcentrator
sampling
instrument
detecting
trace
concentrations
analyte
air
detector
elongated
tubular
container
disposed
wettable
material
extending
substantially
entire
length
continuously
wetted
analyte-sorbing
liquid
flows
sample
flowed
contact
trapping
preconcentrating
traces
sorbing
collected
discharged
wick
comprising
bundle
fibers
immersed
reservoir
liner
inner
surface
centrifugally
dispersed
preferably
vertically
oriented
gravity
effects
flow
wettable material
elongated tubular
liner disposed
analyte-sorbing liquid
sorbing liquid
trace concentrations
liquid flow
entire length
vertically oriented
inner surface
tubular container
analyte detector
preferably vertically
preconcentrator sampling
wetted material
detecting trace
sample air
sampling instrument
continuously wetted
extending substantially
trace concentration
absorption preconcentrator
liquid-absorption preconcentrator
/436/73/95/422/