Separation of americium from tervalent lanthanides for high-resolution alpha spectrometry
Abstract
A simple and efficient method for the separation of americium from many elements including the tervalent lathanides was developed by Moore (1963, Anal. Chem. 35:715) based on oxidation of the americium to its hexavalent state with ammonium peroxydisulfate in a weak nitric acid solution in the presence of silver ion as a catalyst. The non-oxidizable lanthanides and actinides were then precipitated with ammonium fluoride and filtered off, leaving the hexavalent americium in solution as a soluble fluoride complex. The present procedure is similar to that of Moore but with significant differences that permit both high chemical yield and excellent resolution to be obtained using the entire americium fraction from 10 grams of soil to obtain maximum sensitivity and precision by high-resolution alpha spectrometry. The procedure was developed specifically for application to the 4 M nitric acid strip of a bis(2-ethylhexyl)phosphoric acid extract from which most of the cerium from a 10-gram sample had been removed by extraction after oxidation with sodium bromate.
- Authors:
- Publication Date:
- Research Org.:
- EG and G Idaho, Inc., Idaho Falls (USA)
- OSTI Identifier:
- 6223810
- Report Number(s):
- EGG-M-16384; CONF-8410197-1
ON: DE85003553
- DOE Contract Number:
- AC07-76ID01570
- Resource Type:
- Conference
- Resource Relation:
- Conference: 30. annual conference on bioassay, analytical and environmental chemistry, Cincinnati, OH, USA, 10 Oct 1984
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AMERICIUM; ALPHA SPECTROSCOPY; SEPARATION PROCESSES; SOILS; RADIOCHEMICAL ANALYSIS; RARE EARTHS; ACTINIDES; CHEMICAL ANALYSIS; ELEMENTS; METALS; QUANTITATIVE CHEMICAL ANALYSIS; SPECTROSCOPY; TRANSPLUTONIUM ELEMENTS; TRANSURANIUM ELEMENTS; 400103* - Radiometric & Radiochemical Procedures- (-1987); 400105 - Separation Procedures
Citation Formats
Sill, C W. Separation of americium from tervalent lanthanides for high-resolution alpha spectrometry. United States: N. p., 1984.
Web.
Sill, C W. Separation of americium from tervalent lanthanides for high-resolution alpha spectrometry. United States.
Sill, C W. 1984.
"Separation of americium from tervalent lanthanides for high-resolution alpha spectrometry". United States.
@article{osti_6223810,
title = {Separation of americium from tervalent lanthanides for high-resolution alpha spectrometry},
author = {Sill, C W},
abstractNote = {A simple and efficient method for the separation of americium from many elements including the tervalent lathanides was developed by Moore (1963, Anal. Chem. 35:715) based on oxidation of the americium to its hexavalent state with ammonium peroxydisulfate in a weak nitric acid solution in the presence of silver ion as a catalyst. The non-oxidizable lanthanides and actinides were then precipitated with ammonium fluoride and filtered off, leaving the hexavalent americium in solution as a soluble fluoride complex. The present procedure is similar to that of Moore but with significant differences that permit both high chemical yield and excellent resolution to be obtained using the entire americium fraction from 10 grams of soil to obtain maximum sensitivity and precision by high-resolution alpha spectrometry. The procedure was developed specifically for application to the 4 M nitric acid strip of a bis(2-ethylhexyl)phosphoric acid extract from which most of the cerium from a 10-gram sample had been removed by extraction after oxidation with sodium bromate.},
doi = {},
url = {https://www.osti.gov/biblio/6223810},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}