Liquid chromatographic extraction medium
AssigneeArch Development Corporation
InventorsE. Philip Horwitz, Mark L. Dietz
Life of this patent
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Abstract
A method and apparatus for extracting strontium and technetium values from biological, industrial and environmental sample solutions using a chromatographic column is described. An extractant medium for the column is prepared by generating a solution of a diluent containing a Crown ether and dispersing the solution on a resin substrate material. The sample solution is highly acidic and is introduced directed to the chromatographic column and strontium or technetium is eluted using deionized water.
Claims23
An extractant medium for selectively removing at least one of strontium and technetium and from a liquid comprising, an extraction solution dispersed on an inert resin substrate material with said extractant solution consisting essentially of a Crown ether dissolved in an organic diluent capable of dissolving at least 0.3M of water and up to about 6.0M of water, with said Crown ether and said diluent on said inert resin both having limited solubility in water such that said ether and said diluent are not significantly eluted upon exposure to substantial volumes of water during the chromatographic process.
An extractant medium for selectively removing at least one of the group consisting of strontium and technetium from a liquid stream comprising, an extraction solution dispersed on an inert resin substrate material with said extractant consisting essentially of a Crown ether dissolved in an organic diluent capable of dissolving at least about 0.3M of water and up to about 6.0M of water, said extractant solution having limited solubility in water, such that said extractant solution is not significantly eluted upon exposure to substantial volumes of water during the chromatographic process.
An extractant medium for selectively removing at least one of the group consisting of strontium and technetium from a liquid stream comprising, an extraction solution dispersed on an inert resin substrate material with said extractant consisting essentially of a Crown ether dissolved in an organic diluent capable of dissolving at least about 0.3M of water and up to about 6.0M of water, said extractant solution having limited solubility in water, such that said extractant solution is not significantly eluted upon exposure to substantial volumes of water during the chromatographic process.
An extractant medium for removing, and/or testing for the presence of, at least one of strontium and technetium from a liquid comprising, an extraction solution dispersed on an inert resin substrate material with said extraction solution consisting essentially of a Crown ether dissolved in an organic diluent capable of dissolving at least about 0.3M of water and up to about 6.0M of water, said extraction solution having limited solubility in water such that said ether and diluent are not significantly eluted upon exposure to substantial volumes of aqueous containing liquids during the chromatographic process.
Dependencies are inferred from the claim text.