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Title: Organic contaminant separator

A process is presented of sample preparation prior to analysis for the concentration of an organic contaminant in an aqueous medium by (a) passing an initial aqueous medium including a minor amount of the organic contaminant through a composite tube comprised of a blend of a polyolefin and a polyester, the composite tube having an internal diameter of from about 0.1 to about 2.0 millimeters and being of sufficient length to permit the organic contaminant to adhere to the composite tube, (b) passing a solvent through the composite tube. The solvent is capable of separating the adhered organic contaminant from the composite tube. Further, an extraction apparatus is presented for sample preparation prior to analysis for the concentration of an organic contaminant in an aqueous medium. The apparatus includes a composite tube comprised of a blend of a polyolefin and a polyester. The composite tube has an internal diameter of from about 0.1 to about 2.0 millimeters and has sufficient length to permit an organic contaminant contained within an aqueous medium passed therethrough to adhere to the composite tube. 2 figures.
Inventors:
Issue Date:
OSTI Identifier:
5233375
Assignee:
Univ. of California, Oakland, CA (United States) PTO; EDB-94-057231
Patent Number(s):
US 5273655; A
Application Number:
PPN: US 7-912431
Contract Number:
W-7405-ENG-36
Resource Relation:
Patent File Date: 13 Jul 1992
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ORGANIC COMPOUNDS; SEPARATION PROCESSES; SEPARATION EQUIPMENT; DESIGN; DECONTAMINATION; TECHNOLOGY ASSESSMENT; CLEANING; 540320* - Environment, Aquatic- Chemicals Monitoring & Transport- (1990-); 540220 - Environment, Terrestrial- Chemicals Monitoring & Transport- (1990-); 400105 - Separation Procedures