Oxygen analyzer

Patent · Tue May 08 00:00:00 EDT 1984

OSTI ID:6171242

Benner, W H

An oxygen analyzer which identifies and classifies microgram quantities of oxygen in ambient particulate matter and for quantitating organic oxygen in solvent extracts of ambient particulate matter. A sample is pyrolyzed in oxygen-free nitrogen gas (N/sub 2/), and the resulting oxygen quantitatively converted to carbon monoxide (CO) by contact with hot granular carbon (C). Two analysis modes are made possible: (1) rapid determination of total pyrolyzable obtained by decomposing the sample at 1135/sup 0/C, or (2) temperature-programmed oxygen thermal analysis obtained by heating the sample from room temperature to 1135/sup 0/C as a function of time. The analyzer basically comprises a pyrolysis tube containing a bed of granular carbon under N/sub 2/, ovens used to heat the carbon and/or decompose the sample, and a non-dispersive infrared CO detector coupled to a mini-computer to quantitate oxygen in the decomposition products and control oven heating.

• DOE Contract Number: AC03-76SF00098
• Assignee: Dept. of Energy
• Application Number: ON: TI85006002
• OSTI ID: 6171242
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
GAS ANALYSIS
OXYGEN
PARTICULATES
CARBON
CARBON MONOXIDE
NITROGEN
PYROLYSIS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
THERMOCHEMICAL PROCESSES
440300* - Miscellaneous Instruments- (-1989)