Accession Number : AD0164282

Title :   Detection of Toxic Organophosphoru Airborne Substances by Frustrated Multiple Internal Reflection Spectroscopy.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : LaRosa,Charles N. ; Prager,Manfred J. ; Kalinsky,Joseph L.

Report Date : 01 JUN 1971

Pagination or Media Count : 6

Abstract : The patent describes a thin germanium crystal prism whose base surface and opposite parallel surface are coated with platinum about 70 millimicrons thick. Sampled atmosphere is flowed across the base and the opposed surface of the crystal while infrared of wavelength band 9-10 microns is directed through the crystal for multiple internal reflection and the amplitude of infrared that passes through the crystal is monitored. An object of this invention is to continuously monitor the atmosphere to detect the presence of trace quantities of selected substances particularly toxic organophosphorus substances.

Descriptors :   *Patents, *Detectors, *Organic phosphorus compounds, Gas analysis, Infrared spectroscopy, Germanium, Prisms(Optics), Crystals, Monitors, Platinum, Metal coatings

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE