Accession Number : AD0645714

Title :   ANALYSIS OF CRYOGENTICALLY TRAPPED TRACE CONTAMINANTS BY IONIZING GAS CHROMATOGRAPHY.

Descriptive Note : Final rept., 15 Oct 65-15 Jan 67,

Corporate Author : MELPAR INC FALLS CHURCH VA

Personal Author(s) : DESchmertzing,Hannibal S. ; Nelson,Sol S. ; Eaton,Harold C.

Report Date : 15 JAN 1967

Pagination or Media Count : 21

Abstract : The purpose of the work was to determine quantitatively the concentration of micro contaminants in a sealed environmental system. The separation and identification of the cryogenically trapped trace contaminants was accomplished with liquid gas chromatography using a flame ionization detector. Forty sets of samples were analyzed, each set consisting of 3 cylinders, trapped at Brooks AFB. The compounds contained in the sample cylinders were identified by their elution time from a column and the amount measured with the aid of peak areas. The response characteristics of the chromatograph were calculated from response obtained with standard mixtures. The forty sample sets were composed of 9 samples from a manned simulator run conducted in October-November, 1965; 30 samples from a similar run conducted in March-April 1966, and one sample set consisting of trapping efficiency runs. (Author)

Descriptors :   (*CONTROLLED ATMOSPHERES, *GAS CHROMATOGRAPHY), (*SPACE SIMULATION CHAMBERS, GAS ANALYSIS), CONTAMINATION, MICROANALYSIS, CRYOPUMPING, FREEZING, GAS IONIZATION, FLAMES, SAMPLERS

Subject Categories : Physical Chemistry
      Life Support Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE