Sample introducing apparatus and sample modules for mass spectrometer

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:869087

Thompson, Cyril V ^[1]; Wise, Marcus B ^[2]

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1. Knoxville, TN
2. Kingston, TN

An apparatus for introducing gaseous samples from a wide range of environmental matrices into a mass spectrometer for analysis of the samples is described. Several sample preparing modules including a real-time air monitoring module, a soil/liquid purge module, and a thermal desorption module are individually and rapidly attachable to the sample introducing apparatus for supplying gaseous samples to the mass spectrometer. The sample-introducing apparatus uses a capillary column for conveying the gaseous samples into the mass spectrometer and is provided with an open/split interface in communication with the capillary and a sample archiving port through which at least about 90 percent of the gaseous sample in a mixture with an inert gas that was introduced into the sample introducing apparatus is separated from a minor portion of the mixture entering the capillary discharged from the sample introducing apparatus.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• Assignee: Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
• Patent Number(s): US 5272337
• OSTI ID: 869087
• Country of Publication: United States
• Language: English

Related Subjects

sample
introducing
apparatus
modules
mass
spectrometer
gaseous
samples
wide
range
environmental
matrices
analysis
described
preparing
including
real-time
air
monitoring
module
soil
liquid
purge
thermal
desorption
individually
rapidly
attachable
supplying
sample-introducing
capillary
column
conveying
provided
split
interface
communication
archiving
90
percent
mixture
inert
gas
introduced
separated
minor
portion
entering
discharged
gaseous samples
capillary column
mass spectrometer
inert gas
wide range
air monitor
gaseous sample
minor portion
monitoring module
thermal desorption
time air
supplying gas
split interface
real-time air
air monitoring
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