Device for collecting and analyzing matrix-isolated samples

Patent · Mon Jan 01 00:00:00 EST 1979

OSTI ID:863377

Reedy, Gerald T ^[1]

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1. Lemont, IL

A gas-sample collection device is disclosed for matrix isolation of individual gas bands from a gas chromatographic separation and for presenting these distinct samples for spectrometric examination. The device includes a vacuum chamber containing a rotatably supported, specular carrousel having a number of external, reflecting surfaces around its axis of rotation for holding samples. A gas inlet is provided for depositing sample and matrix material on the individual reflecting surfaces maintained at a sufficiently low temperature to cause solidification. Two optical windows or lenses are installed in the vacuum chamber walls for transmitting a beam of electromagnetic radiation, for instance infrared light, through a selected sample. Positioned within the chamber are two concave mirrors, the first aligned to receive the light beam from one of the lenses and focus it to the sample on one of the reflecting surfaces of the carrousel. The second mirror is aligned to receive reflected light from that carrousel surface and to focus it outwardly through the second lens. The light beam transmitted from the sample is received by a spectrometer for determining absorption spectra.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4158772
• OSTI ID: 863377
• Country of Publication: United States
• Language: English

Related Subjects

device
collecting
analyzing
matrix-isolated
samples
gas-sample
collection
disclosed
matrix
isolation
individual
gas
bands
chromatographic
separation
distinct
spectrometric
examination
vacuum
chamber
containing
rotatably
supported
specular
carrousel
external
reflecting
surfaces
axis
rotation
holding
inlet
provided
depositing
sample
material
maintained
sufficiently
temperature
solidification
optical
windows
lenses
installed
walls
transmitting
beam
electromagnetic
radiation
instance
infrared
light
selected
positioned
concave
mirrors
aligned
receive
focus
mirror
reflected
surface
outwardly
lens
transmitted
received
spectrometer
determining
absorption
spectra
concave mirrors
rotatably supported
individual gas
infrared light
reflecting surfaces
collection device
sample collection
matrix material
gas inlet
vacuum chamber
electromagnetic radiation
light beam
reflecting surface
chamber containing
concave mirror
reflected light
chamber wall
gas chromatograph
chromatographic separation
absorption spectra
beam transmitted
gas chromatographic
chamber walls
matrix isolation
gas-sample collection
gas bands
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