Recovery of liquids from absorbent packaging materials
AssigneeThe Research Foundation of State University of New York
InventorsPaschalis Alexandridis, Sriram Neelamegham
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Abstract
The present invention describes a method for recovery of aqueous samples or components thereof from polymer packaging materials, wherein the spilled aqueous sample has been absorbed by the packaging material to form a liquid swollen absorbent gel. The method comprises the steps of contacting the liquid swollen absorbent gel with a recovery fluid, wherein the recovery fluid has a higher osmotic pressure than the aqueous sample.
Claims23
A method for recovering an aqueous sample from an absorbent packaging material comprising absorbent fibers, absorbent granules or combinations thereof and wherein the absorbent packaging material has absorbed the aqueous sample and formed a liquid-swollen absorbent gel, comprising the steps of:
- a) contacting the liquid-swollen absorbent gel with a recovery fluid for a sufficient time to disrupt the liquid-swollen absorbent gel and form a recovery mixture, wherein the osmotic pressure of the recovery fluid is higher than the osmotic pressure of the aqueous sample, and
- b) removing the recovery mixture for detection and analysis of desired analytes.
A method for recovering an aqueous sample from an absorbent packaging material wherein the absorbent packaging material comprising absorbent fibers, absorbent granules or combinations thereof has absorbed the aqueous sample and formed a liquid swollen absorbent gel, comprising the steps of:
- a) estimating the amount of aqueous sample absorbed by the polymer packaging material;
- b) contacting the liquid-swollen absorbent gel with recovery fluid for sufficient time to disrupt the liquid swollen absorbent gel and form a recovery mixture, wherein the osmotic pressure of the recovery fluid is greater than the osmotic pressure of the aqueous sample, and wherein the recovery fluid is in excess of the estimated aqueous sample;
- c) removing the recovery mixture.
Dependencies are inferred from the claim text.