发明名称 |
Method and apparatus for extraction of strontium from urine |
摘要 |
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.
|
申请公布号 |
US8507284(B2) |
申请公布日期 |
2013.08.13 |
申请号 |
US201113182873 |
申请日期 |
2011.07.14 |
申请人 |
KAMINSKI MICHAEL D.;MERTZ CAROL J.;SHKROB ILYA A.;DIETZ MARK L.;HAWKINS CORY A.;UCHICAGO ARGONNE, LLC |
发明人 |
KAMINSKI MICHAEL D.;MERTZ CAROL J.;SHKROB ILYA A.;DIETZ MARK L.;HAWKINS CORY A. |
分类号 |
G01N33/20;B01D15/00;B01D37/02;C01F11/00 |
主分类号 |
G01N33/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|