Accession Number:

AD0894449

Title:

Infrared Spectra of Submicrogram Quantities of Materials.

Descriptive Note:

Final rept. Aug 71-Feb 72,

Corporate Author:

SADTLER RESEARCH LABS INC PHILADELPHIA PA

Personal Author(s):

Report Date:

1972-05-01

Pagination or Media Count:

81.0

Abstract:

A study was made to determine practical and theoretical sensitivity limits of infrared spectroscopy for selected phosphonate acid esters. An infrared Fourier transform spectrophotometer was used in the study with both a triglycine sulfate and cooled mercury-cadmium telluride detector. The most sensitive technique should be the micro-KBr disc technique, but volatility of the sample reduced the effectiveness of this method. Where small samples able to be prepared, subnanogram sensitivity is possible using small apertures and a cooled detector. Practically the most convenient method for submicrogram sampling of the materials used in this study was found to be in carbon tetrachloride solution. The use of rapid-scanning Fourier transform spectroscopy was studied for identification of peaks eluted from a gas-chromatograph. This technique works for large samples, but not for submicrogram amounts. Author

Subject Categories:

  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE