NASA NTRS · 19760000199
Precolumn for extract concentration
Abstract
AUDRI requires test sample separation into organic compound families for subsequent insertion into several parallel chromatographs. Sample is first extracted by selective organic solvents. Solvent is then removed from extract to increase extract-to-solvent ratio, increasing system sensitivity. Backflushing of precolumn serves as cleanser.
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Jahnsen, V. J., Bloom, W. G.. 1976-08-01. Precolumn for extract concentration. https://ntrs.nasa.gov/citations/19760000199
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