Optical analyzer
- Berkeley, CA
An optical analyzer (10) wherein a sample (19) of particulate matter, and particularly of organic matter, which has been collected on a quartz fiber filter (20) is placed in a combustion tube (11), and light from a light source (14) is passed through the sample (19). The temperature of the sample (19) is raised at a controlled rate and in a controlled atmosphere. The magnitude of the transmission of light through the sample (19) is detected (18) as the temperature is raised. A data processor (23), differentiator (28) and a two pen recorder (24) provide a chart of the optical transmission versus temperature and the rate of change of optical transmission versus temperature signatures (T and D) of the sample (19). These signatures provide information as to physical and chemical processes and a variety of quantitative and qualitative information about the sample (19). Additional information is obtained by repeating the run in different atmospheres and/or different rates of heating with other samples of the same particulate material collected on other filters.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC03-76SF00098
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- H000572
- Application Number:
- 07/101534
- OSTI ID:
- 875225
- Country of Publication:
- United States
- Language:
- English
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additional
additional information
analyzer
atmosphere
atmospheres
change
chart
chemical
chemical process
chemical processes
collected
combustion
combustion tube
controlled
controlled atmosphere
controlled rate
data
data processor
detected
differentiator
fiber
fiber filter
filter
filters
heating
information
light
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magnitude
material
matter
obtained
optical
optical analyzer
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organic
organic matter
particularly
particulate
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particulate matter
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processes
processor
provide
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qualitative
quantitative
quartz
quartz fiber
raised
rate
rates
recorder
repeating
run
sample
samples
signatures
source
statutory invention registration
temperature
transmission
tube
variety
versus
versus temperature