The Detection of Toxic Vapours in the Atmosphere by Infrared Spectrophotometry. 4, Atmospheric Samples from H. M. Ships
Abstract
Samples of air taken aboard selected types of H.M. ships have been analysed by infrared spectrophotometry using long optical-path gas cells. Nine gases, acetylene, carbon dioxide, carbon monoxide, carbonyl sulphide, ethylene, Freon 12, hydrocarbons, hydrogen cyanide, and methane were detected at concentrations high enough to be determined quantitatively and traces of several other gases were also identified. In addition, there were a number of absorption bands, in the spectra obtained from some samples, which could not be identified unequivocally. In surface vessels, under 'shut-down' conditions, and in a submarine during submersion, the concentrations of some contaminants built up to a high level. Any chemical entering the citadel was dispersed to all parts of the air circulation system. It is concluded that no interference with detection devices at present under investigation is likely from any of the compounds detected at the concentrations measured.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1969
- Accession Number
- AD0399332
Entities
People
- L. C. Thomas
- P. A. Hollingdale-smith