Matrix-isolation photoacoustic spectroscopy
Conference
·
OSTI ID:5709894
We have recorded the first photoacoustic (PA) spectra of polycyclic aromatic hydrocarbons and n-heterocycles isolated in rare gas matrices at 5 to 10K. Matrix-isolation sampling was utilized in the hope of improving PA spectral resolution so as to provide greater analytical selectivity for the analysis of mixtures. The most sensitive transducer found was an undamped PZT disc, yielding detection limits ranging from 50 to 500 ng, depending on the molar absorptivity of the individual compound measured. Matrix isolation spectra of n-heterocycles in argon were two- to three-fold sharper than their room temperature solution counterparts. Internal and external heavy atom effects were observed for naphthalene.
- Research Organization:
- Oak Ridge National Lab., TN (USA); Tennessee Univ., Knoxville (USA). Dept. of Chemistry
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5709894
- Report Number(s):
- CONF-831025-19; ON: DE84001967
- Country of Publication:
- United States
- Language:
- English
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