Accession Number : ADA020032

Title :   A Portable Gas-Filter-Correlation Spectrometer for HCl and HF

Descriptive Note : Final rept. 15 Jan 1974-31 Jan 1975

Corporate Author : SCIENCE APPLICATIONS INC LA JOLLA CA

Personal Author(s) : Bartle, E R

PDF Url : ADA020032

Report Date : Oct 1975

Pagination or Media Count : 42

Abstract : A portable gas-filter-correlation spectrometer (GFCS) has been developed to continuously monitor HCl and HF over the concentration range from 0.2 to 1000 ppm. The unit operates using either 115 VAC 60 Hz or 12 VDC. The attained threshold sensitivities of 167 and 200 ppb for HCl and HF, respectively, are nearly those predicted from theoretical considerations. Excellent specificity is obtained in the presence of anticipated interfering species. The system also can be converted into an active long-path system using a retroreflector; ranges up to 500 m (1-km optical path) can be used with about the same sensitivities. A technique for passive single-ended remote sensing is described that appears to offer significant potential for ranges up to 1 km. This monitor can be used on air pollution detection.

Descriptors :   *AIR POLLUTION, *HYDROGEN CHLORIDE, *HYDROGEN FLUORIDE, *POLLUTANTS, ABSORPTION SPECTRA, COMBUSTION PRODUCTS, EMISSION SPECTRA, EXHAUST GASES, GAS DETECTORS, LABORATORY TESTS, MOBILITY, MONITORS, PORTABLE EQUIPMENT, SENSITIVITY

Subject Categories : Industrial Chemistry and Chemical Processing
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE