Portable system and method combining chromatography and array of electrochemical sensors
- Hinsdale, IL
- Naperville, IL
A portable system for analyzing a fluid sample includes a small, portable, low-pressure and low-power chromatographic analyzer and a chemical parameter spectrometry monitor including an array of sensors for detecting, identifying and measuring the concentrations of a variety of components in the eluent from the chromatographic analyzer. The monitor includes one or more operating condition controllers which may be used to change one or more of the operating conditions during exposure of the sensors to the eluent from the chromatography analyzer to form a response pattern which is then compared with a library of previously established patterns. Gas and liquid chromatographic embodiments are disclosed. In the gas embodiment, the operating condition controllers include heated filaments which may convert electrochemically inactive components to electrochemically active products. In the liquid chromatography embodiment, low-power, liquid-phase equivalents of heated filaments are used with appropriate sensors. The library response patterns may be divided into subsets and the formed pattern may be assigned for comparison only with the patterns of a particular subset.
- 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 4888295
- OSTI ID:
- 867216
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
method
combining
chromatography
array
electrochemical
sensors
analyzing
fluid
sample
low-pressure
low-power
chromatographic
analyzer
chemical
parameter
spectrometry
monitor
including
detecting
identifying
measuring
concentrations
variety
components
eluent
operating
condition
controllers
change
conditions
exposure
form
response
pattern
compared
library
previously
established
patterns
gas
liquid
embodiments
disclosed
embodiment
heated
filaments
convert
electrochemically
inactive
active
products
liquid-phase
equivalents
appropriate
divided
subsets
formed
assigned
comparison
particular
subset
response patterns
liquid chromatograph
chemical sensors
fluid sample
electrochemical sensor
chemical sensor
operating conditions
liquid chromatography
liquid chromatographic
operating condition
electrochemically active
chemically active
active components
response pattern
electrochemical sensors
heated filament
active component
chemical parameter
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