Modified resins for solid-phase extraction
AssigneeIowa State University Research Foundation, Inc.
InventorsJames S. Fritz, Jeffrey J. Sun
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Abstract
A process of treating aqueous solutions to remove organic solute contaminants by contacting an aqueous solution containing polar organic solute contaminants with a functionalized polystyrene-divinyl benzene adsorbent resin, with the functionalization of said resin being accomplished by organic hydrophilic groups such as hydroxymethyl, acetyl and cyanomethyl.
Claims8
A process of treating an aqueous solution to remove organic solutes, said method comprising:
- contacting an aqueous solution containing some organics with a functionalized polystyrene-divinyl benzene adsorbent resin;
- and
- said resin being functionalized by organic, hydrophilic groups selected from the group consisting of hydroxymethyl, acetyl and cyanomethyl.
A method of analytically determining levels of polar organics in aqueous solutions, said method comprising:
- contacting an aqueous solution containing some polar organics with a functionalized polystyrene-divinyl benzene adsorbent resin;
- said resin being functionalized by organic, neutral hydrophilic groups selected from the group consisting of hydroxy-methyl, acetyl and cyanomethyl, and thereafter;
- washing the polar organics out of said adsorbent resin with a suitable element, and thereafter;
- analytically determining the level of polar organics present.
The process of claim 8 wherein the functionalized groups are present at from about 0.5 to about 1.5 millimoles per gram of adsorbent resin.
The process of claim 8 wherein the organics are phenols.
The process of claim 8 wherein the hydrophilic groups are neutral hydrophilic groups.
Dependencies are inferred from the claim text.