Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Radium 226 in Water (Total, Suspended, and Dissolved) by Radon De-Emanation.
Author Rushing., David E. ;
CORP Author Public Health Service, Salt Lake City, Utah
Year Published 1963
Stock Number PB-260 210
Additional Subjects Radiation measurement ; Radiation measuring instruments ; Water pollution ; Radioactive contaminants ; Radioactivation analysis ; Water analysis ; Water pollution detection ;
Library Call Number Additional Info Location Last
NTIS  PB-260 210 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 30p
Emanation indicates the general method of approach to determine Radium 226. Ra 226 decays to form Radon 222, a gas separated by aeration and measured for counting alpha disintegrations in gases. A sample is obtained in solution and radium isotopes are coprecipitated with a large amount of barium sulfate. Barium-radium sulfate is decomposed by forming with phosphoric acid, and the resulting glassy melt is dissolved by evaporation with dilute hydrochloric acid to form soluble barium-radium phosphates and chlorides. After aging, radon is removed by aeration and counted. The amount of Ra 226 is calculated from the observed counting rate and the period of ingrowth for Radon 222.