Device for collecting and analyzing matrix-isolated samples

Patent · 31 December 1978

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
• 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

/250/356/
absorption
absorption spectra
aligned
analyzing
axis
bands
beam
beam transmitted
carrousel
chamber
chamber containing
chamber wall
chamber walls
chromatographic
chromatographic separation
collecting
collection
collection device
concave
concave mirror
concave mirrors
containing
depositing
determining
device
disclosed
distinct
electromagnetic
electromagnetic radiation
examination
external
focus
gas
gas bands
gas chromatograph
gas chromatographic
gas inlet
gas-sample
gas-sample collection
holding
individual
individual gas
infrared
infrared light
inlet
installed
instance
isolation
lens
lenses
light
light beam
maintained
material
matrix
matrix isolation
matrix material
matrix-isolated
mirror
mirrors
optical
outwardly
positioned
provided
radiation
receive
received
reflected
reflected light
reflecting
reflecting surface
reflecting surfaces
rotatably
rotatably supported
rotation
sample
sample collection
samples
selected
separation
solidification
spectra
spectrometer
spectrometric
specular
sufficiently
supported
surface
surfaces
temperature
transmitted
transmitting
vacuum
vacuum chamber
walls
windows