Abstract
The transuranides analysis in environmental samples is carried out by CIEMAT using standardized methods based on sequential separation with ionic-exchange resins. The americium fraction is purified through a two-layer ion exchange column and lately in an anion-exchange column in nitric acid methanol medium. The technique is time-consuming and the results are not completely satisfactory (low recovery and loss of alpha-resolution) for some samples. The chemical compound CMPO (octyl(phenyl).N,N-diisobutyl carbomoylmethyiphosphine oxide) dissolved in TPB (tributyl phosphate) and supported on an inert substrate has been tested directly for ``241 Am analysis by a large number of laboratories. A new method that combines both procedures has been developed. The details of the improved procedure are described in this paper. The advantages of its application to environmental samples (urine, faeces and sediments) are discussed. The utilization of standard, with americium certified concentrations confirms the reliability of our measurements.
Citation Formats
Gasco, C, Anton, M A, Alvarez, A, Navarro, N, and Salvador, S.
A radiochemical procedure for a low-level measurement of ``241 Am in environmental samples using a supported functional organo phosphorus extractant; Metodo analitico para la determinacion de ``241 Am en muestras biologicas y sedimentos marinos mediante uso de una columna con extractante organico.
Spain: N. p.,
1994.
Web.
Gasco, C, Anton, M A, Alvarez, A, Navarro, N, & Salvador, S.
A radiochemical procedure for a low-level measurement of ``241 Am in environmental samples using a supported functional organo phosphorus extractant; Metodo analitico para la determinacion de ``241 Am en muestras biologicas y sedimentos marinos mediante uso de una columna con extractante organico.
Spain.
Gasco, C, Anton, M A, Alvarez, A, Navarro, N, and Salvador, S.
1994.
"A radiochemical procedure for a low-level measurement of ``241 Am in environmental samples using a supported functional organo phosphorus extractant; Metodo analitico para la determinacion de ``241 Am en muestras biologicas y sedimentos marinos mediante uso de una columna con extractante organico."
Spain.
@misc{etde_10104728,
title = {A radiochemical procedure for a low-level measurement of ``241 Am in environmental samples using a supported functional organo phosphorus extractant; Metodo analitico para la determinacion de ``241 Am en muestras biologicas y sedimentos marinos mediante uso de una columna con extractante organico}
author = {Gasco, C, Anton, M A, Alvarez, A, Navarro, N, and Salvador, S}
abstractNote = {The transuranides analysis in environmental samples is carried out by CIEMAT using standardized methods based on sequential separation with ionic-exchange resins. The americium fraction is purified through a two-layer ion exchange column and lately in an anion-exchange column in nitric acid methanol medium. The technique is time-consuming and the results are not completely satisfactory (low recovery and loss of alpha-resolution) for some samples. The chemical compound CMPO (octyl(phenyl).N,N-diisobutyl carbomoylmethyiphosphine oxide) dissolved in TPB (tributyl phosphate) and supported on an inert substrate has been tested directly for ``241 Am analysis by a large number of laboratories. A new method that combines both procedures has been developed. The details of the improved procedure are described in this paper. The advantages of its application to environmental samples (urine, faeces and sediments) are discussed. The utilization of standard, with americium certified concentrations confirms the reliability of our measurements.}
place = {Spain}
year = {1994}
month = {Dec}
}
title = {A radiochemical procedure for a low-level measurement of ``241 Am in environmental samples using a supported functional organo phosphorus extractant; Metodo analitico para la determinacion de ``241 Am en muestras biologicas y sedimentos marinos mediante uso de una columna con extractante organico}
author = {Gasco, C, Anton, M A, Alvarez, A, Navarro, N, and Salvador, S}
abstractNote = {The transuranides analysis in environmental samples is carried out by CIEMAT using standardized methods based on sequential separation with ionic-exchange resins. The americium fraction is purified through a two-layer ion exchange column and lately in an anion-exchange column in nitric acid methanol medium. The technique is time-consuming and the results are not completely satisfactory (low recovery and loss of alpha-resolution) for some samples. The chemical compound CMPO (octyl(phenyl).N,N-diisobutyl carbomoylmethyiphosphine oxide) dissolved in TPB (tributyl phosphate) and supported on an inert substrate has been tested directly for ``241 Am analysis by a large number of laboratories. A new method that combines both procedures has been developed. The details of the improved procedure are described in this paper. The advantages of its application to environmental samples (urine, faeces and sediments) are discussed. The utilization of standard, with americium certified concentrations confirms the reliability of our measurements.}
place = {Spain}
year = {1994}
month = {Dec}
}