ISSN:
1588-2780
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Abstract A sequential analytical method for the determination of238U,234U,232Th,230Th,228Th,228Ra,226Ra and210Pb in environmental samples was developed. Uranium and thorium isotopes are first chromatographically sepaaated using tri-n-octyl phosphine oxide (TOPO) supported on silica gel. The uranium isotopes are determined by alpha-spectrometry following extraction with TOPO onto a polymeric membrane. Thorium isotopes are co-precipitated with lanthanum fluoride before counting in an alpha spectrometer. Radium isotopes and210Pb are separated by co-precipitation/precipitation with mixed barium/lead sulphate. Radium-226 is determined by gross alpha counting of the final BaSO4 precipitate and228Ra by gross beta counting of the same source. Lead-210 is determined through beta counting of its daughter product210Bi.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02047980
