Method and Apparatus for the Continuous Extraction of Ingredients from Samples.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Pagination or Media Count:
A method and apparatus for continuous extraction of an ingredient from a sample employs a container having a solvent therein selected for is ability to extract the ingredient. The sample is held against a porous substrate having a lower portion which is located below the sample and placed in the solvent, and an upper portion which is located above the sample and exposed to a selected atmosphere. In a continuous supply from the container, solvent is caused to ascend the substrate by capillary action, penetrate the sample, extract the ingredient therefrom, and continue to ascend the upper portion of the substrate where it evaporates, depositing the extracted ingredient thereon. The upper portion of the substrate containing the ingredient may then be removed.
- Industrial Chemistry and Chemical Processing
- Organic Chemistry