You need JavaScript to view this

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

Technical Report:

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.
Publication Date:
Dec 31, 1994
Product Type:
Technical Report
Report Number:
CIEMAT-745
Reference Number:
SCA: 400101; 540330; PA: SPN-94:0B0824; EDB-95:015865; SN: 95001297674
Resource Relation:
Other Information: PBD: [1994]
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; AMERICIUM 241; LOW LEVEL COUNTING; ENVIRONMENTAL MATERIALS; RADIOCHEMICAL ANALYSIS; AQUATIC ECOSYSTEMS; SAMPLING; ENVIRONMENTAL QUALITY; 400101; 540330; ACTIVATION, NUCLEAR REACTION, RADIOMETRIC, AND RADIOCHEMICAL PROCEDURES; RADIOACTIVE MATERIALS MONITORING AND TRANSPORT
OSTI ID:
10104728
Research Organizations:
Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT), Madrid (Spain)
Country of Origin:
Spain
Language:
Spanish
Other Identifying Numbers:
Other: ON: DE95722439; TRN: ES94B0824
Availability:
OSTI; NTIS; INIS
Submitting Site:
INIS
Size:
56 p.
Announcement Date:
Jun 30, 2005

Technical Report:

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}
}