The United States of America As Represented by the Secretary of

Virginia L Gibson

James N Huckins

Jimmie D Petty

Mark W Tubergen

Gamini K Manuweera

Jimmie D Perry

Jon A Lebo

James A Zajicek

A device and method for removing, concentrating and analyzing airborne organic compounds. The device includes a nonporous membrane which contains a collection media. The liquid collection media typically includes a component which has a molecular weight that is too large to pass through transport corridors in the nonporous membrane and a component which has a molecular weight which is sufficiently small enough to pass through the transport corridors in the nonporous membrane and thereby forming a thin film on the exterior surface of the device. The collection media can consist of only components too large to pass through the membrane transport corridors. Organic contaminants are trapped in the thin film on the exterior surface of the device or the membrane and transported by concentration gradient diffusion forces into the bulk of the collection media within the nonporous membrane.

Device for the removal and concentration of organic compounds from the

A binary process for the concentration and recovery of contaminants from an aqueous environment by submerging lipids (11) inside of a thin non-porous polymeric film enclosure (10) in an aqueous environment (13) to concentrate the contaminants in the lipids (11) and polymeric film (10); and, recovering contaminants or impurities from the first part or from other contaiminated lipids or biogenic extracts by sumberging the polymeric film enclosed materials (10) in a solvent medium (16).

Binary concentration and recovery process

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Columbia, MO, United States of America

Virginia L Gibson