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Title: 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}
}

Conference:
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