Accession Number : AD0782765

Title :   Background Gas Effects on Infra-Red Analysis of Carbon Dioxide.

Descriptive Note : Final rept.,

Corporate Author : NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C

Personal Author(s) : Corcoran ,Paul J. , Jr. ; Lanphier,E. H. ; Blodgett,John R. , Jr. ; Smith,Jose C. ; Nevels,Zebedee J.

Report Date : 04 SEP 1956

Pagination or Media Count : 21

Abstract : Infra-red carbon dioxide analyzers have been used in many experimental diving unit studies involving a variety of breathing media. Calibration of the instruments has routinely been conducted with mixtures of carbon dioxide in the air. It was recently discovered that this use of an air-CO2 calibration curve could introduce errors when the 'background' of samples being analyzed was a gas other than air. Investigation of the magnitude of errors introduced and of their reproducibility under various conditions was undertaken. It was found that the errors were definite but not large, that valid correction of previous data was possible under most conditions, and that relatively simple procedures would suffice to eliminate this source of error in future work. (Author)

Descriptors :   *Carbon dioxide, *Gas analysis, Infrared equipment, Gases, Errors, Calibration

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE