Method and apparatus for extraction of strontium from urine

Kaminski, Michael D.; Mertz, Carol J.; Shkrob, Ilya A.; Dietz, Mark L.; Hawkins, Cory A.

Method and apparatus for extraction of strontium from urine

Patent · Tue Aug 13 04:00:00 EDT 2013

OSTI ID:1531865

Kaminski, Michael D.; Mertz, Carol J.; Shkrob, Ilya A.; Dietz, Mark L.; Hawkins, Cory A.

The present invention provides an apparatus and rapid methods for extracting strontium ions from urine to provide a concentrated and purified strontium-90 extract suitable for scintillation measurements. The methods remove organic compounds, pigments, and alkali metal ions that can interfere with quantitative determination of strontium-90 in urine. A method of the invention comprises acidifying urine and removing organic pigments therefrom, loading a known quantity of so-treated urine onto a diphosphonic acid-based ion-exchange resin; flowing aqueous methanesulfonic acid through the diphosphonic acid-based ion-exchange resin to elute alkali metal ions therefrom; eluting strontium ions off of the diphosphonic acid-based resin and on to a strontium extraction chromatographic resin with a concentrated aqueous nitric acid solution; subsequently flowing water or a dilute acid stripping solution through the strontium extraction resin to strip the strontium from the strontium extraction resin; and collecting the strontium-containing stripping solution eluting from the strontium extraction resin.

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC02-06CH11357

Assignee:: UChicago Argonne, LLC (Chicago, IL)

Patent Number(s):: 8,507,284

Application Number:: 13/182,873

OSTI ID:: 1531865

Country of Publication:: United States

Language:: English

References (8)

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