| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a43e61165b05f52d632ef3ac0048aeab
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c337c6bec1b6a59d1ff52334c0e889f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_686135d9e8422ec657ae6823ea13bca0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5f21edeac859e2158296ed9f0fdf8767
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b9d0431643a8821a088efdecd07080e8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_377844c252919c7b4c6c8c635404e27a |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D15-363
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-493
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D15-3847
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D15-1871
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-005 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D15-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D37-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-00 |
| filingDate |
2011-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2013-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4cbf0b656fd250a24c835f680e826e89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_74b2b47caa59145a0e4635b800881f36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79940072f51474835483f8c9294eb676
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_42b443e208adbe1a15f89439f8b3483a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eab0f8c564aff090b09258edb004af97 |
| publicationDate |
2013-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8507284-B2 |
| titleOfInvention |
Method and apparatus for extraction of strontium from urine |
| abstract |
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. |
| priorityDate |
2011-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |