Optical analyzer
An optical analyzer wherein a sample of particulate matter, and particularly of organic matter, which has been collected on a quartz fiber filter is placed in a combustion tube, and light from a light source is passed through the sample. The temperature of the sample is raised at a controlled rate and in a controlled atmosphere. The magnitude of the transmission of light through the sample is detected as the temperature is raised. A data processor, differentiator and a two pen recorder 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. These signatures provide information as to physical and chemical processes and a variety of quantitative and qualitative information about the sample. Additional information is obtained by repeating the run in different atmospheres and/or different rates or heating with other samples of the same particulate material collected on other filters. 7 figs.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- Assignee:
- Dept. of Energy
- Patent Number(s):
- PATENTS-US-A6101534
- Application Number:
- ON: DE89000199
- OSTI ID:
- 7061089
- Country of Publication:
- United States
- Language:
- English
Similar Records
Optical analyzer
Standard method of test for particulate matter in the atmosphere (optical density of filtered deposit). [Pollution and sampling]
Related Subjects
400102* -- Chemical & Spectral Procedures
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COMBUSTION
CORRELATIONS
DATA PROCESSING
DECOMPOSITION
EQUIPMENT
FILTERS
HEATING RATE
INVENTIONS
LIGHT TRANSMISSION
MINERALS
OPTICAL EQUIPMENT
ORGANIC MATTER
OXIDATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PROCESSING
PYROLYSIS
QUARTZ
SILICON COMPOUNDS
SILICON OXIDES
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES