Method and apparatus for the continuous extraction of ingredient

Details Method and apparatus for the continuous extraction of ingredient Method and apparatus for the continuous extraction of ingredient

1981-10-22

1983-03-22

Marcus, Michael S.

Chemistry: analytical and immunological testing

Including sample preparation

Liberation or purification of sample or separation of...

73 611C, 2101983, 210658, 422 70, 436162, 436 20, 436 21, 436126, G01N 3106

Patent

active

043776418

ABSTRACT:
A method and apparatus for continuous extraction of an ingredient from a sample employs a container having a solvent therein selected for its 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.

REFERENCES:
patent: 3327857 (1967-06-01), Kopp
patent: 4028060 (1977-06-01), Godsey
patent: 4065384 (1977-12-01), Pandey et al.
patent: 4313906 (1982-02-01), Filipi
J. A. Barnard et al., Modern Methods of Chemical Analysis, (1969) pp. 189-218.
H. A. Flaschka et al., Quantitative Analytical Chemistry, vol. 1, Introduction to Principle, (1969) pp. 517-519.

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