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Title: Optical analyzer

Abstract

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.

Inventors:
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
OSTI Identifier:
7061089
Patent Number(s):
6101534
Application Number:
ON: DE89000199
Assignee:
Dept. of Energy
Patent Classifications (CPCs):
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04M - TELEPHONIC COMMUNICATION
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 47 OTHER INSTRUMENTATION; LIGHT TRANSMISSION; CORRELATIONS; ORGANIC MATTER; CHEMICAL ANALYSIS; COMBUSTION; DATA PROCESSING; FILTERS; HEATING RATE; INVENTIONS; OPTICAL EQUIPMENT; PYROLYSIS; QUARTZ; TEMPERATURE EFFECTS; CHALCOGENIDES; CHEMICAL REACTIONS; DECOMPOSITION; EQUIPMENT; MINERALS; OXIDATION; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PROCESSING; SILICON COMPOUNDS; SILICON OXIDES; THERMOCHEMICAL PROCESSES; 400102* - Chemical & Spectral Procedures; 440300 - Miscellaneous Instruments- (-1989)

Citation Formats

Hansen, A D. Optical analyzer. United States: N. p., 1987. Web.
Hansen, A D. Optical analyzer. United States.
Hansen, A D. Mon . "Optical analyzer". United States.
@article{osti_7061089,
title = {Optical analyzer},
author = {Hansen, A D},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {9}
}