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Determination of Fe-55 and Ni-63 in Environmental Samples. Analytical Problems. Characteristic Limits. Automatized Calculation; Determinacion de 55{sup F}e y 63{sup N}i en Muestras Ambientales. Problemas Analiticos. Limites Caracteristicos. Calculo Automatizado

Abstract

The Department of Vigilance Radiologica y Radiactividad Ambiental from CIEMAT has developed an appropriate analytical methodology for Fe-55 and Ni-63 sequential determination in environmental samples based on the procedure used by RIS0 Laboratories. The experimental results obtained in the mayor and minor elements behaviour (soil and air constituents) in the different types of resins used for separating Fe-55 and Ni-63 are showed in this report. The measuring method of both isotopes by scintillation counting has been optimized with Ultima Gold liquid with different concentrations of stable element Fe and Ni. The decontamination factors of different gamma-emitters are experimentally determined in this method with the presence of soil matrix. The Fe-55 and Ni-63 activity concentrations and their associated uncertainties have been calculated from the counting data and sample preparation. A computer application has been implemented in Visual Basic in excel sheets for: (I) obtaining the counting data from spectrometer and counts in each window, (II) representing graphically the background and sample spectrums, (III) determining the activity concentration and its associated uncertainty and (IV) calculating the characteristic limits using ISO 11929 (2007) with various confidence levels. (Author) 30 refs.
Publication Date:
Aug 06, 2008
Product Type:
Technical Report
Report Number:
CIEMAT-1143
Subject:
54 ENVIRONMENTAL SCIENCES; SCINTILLATION COUNTING; IRON 55; NICKEL 63; ION EXCHANGE CHROMATOGRAPHY; RESINS; SOILS; AIR; SAMPLE PREPARATION
OSTI ID:
21060656
Research Organizations:
Centro de Investigaciones Energeticas Medioambientales y Tecnologicas (CIEMAT), Madrid (Spain)
Country of Origin:
Spain
Language:
Spanish
Other Identifying Numbers:
TRN: ES08E0433
Availability:
Commercial reproduction prohibited; OSTI as DE21060656
Submitting Site:
SP
Size:
71 pages
Announcement Date:
Aug 06, 2008

Citation Formats

Gasco, C, Navarro, N, Gonzalez, P, Heras, M C, Gapan, M P, Alonso, C, Calderon, A, Sanchez, D, Morante, R, Fernandez, M, Gajate, A, and Alvarez, A. Determination of Fe-55 and Ni-63 in Environmental Samples. Analytical Problems. Characteristic Limits. Automatized Calculation; Determinacion de 55{sup F}e y 63{sup N}i en Muestras Ambientales. Problemas Analiticos. Limites Caracteristicos. Calculo Automatizado. Spain: N. p., 2008. Web.
Gasco, C, Navarro, N, Gonzalez, P, Heras, M C, Gapan, M P, Alonso, C, Calderon, A, Sanchez, D, Morante, R, Fernandez, M, Gajate, A, & Alvarez, A. Determination of Fe-55 and Ni-63 in Environmental Samples. Analytical Problems. Characteristic Limits. Automatized Calculation; Determinacion de 55{sup F}e y 63{sup N}i en Muestras Ambientales. Problemas Analiticos. Limites Caracteristicos. Calculo Automatizado. Spain.
Gasco, C, Navarro, N, Gonzalez, P, Heras, M C, Gapan, M P, Alonso, C, Calderon, A, Sanchez, D, Morante, R, Fernandez, M, Gajate, A, and Alvarez, A. 2008. "Determination of Fe-55 and Ni-63 in Environmental Samples. Analytical Problems. Characteristic Limits. Automatized Calculation; Determinacion de 55{sup F}e y 63{sup N}i en Muestras Ambientales. Problemas Analiticos. Limites Caracteristicos. Calculo Automatizado." Spain.
@misc{etde_21060656,
title = {Determination of Fe-55 and Ni-63 in Environmental Samples. Analytical Problems. Characteristic Limits. Automatized Calculation; Determinacion de 55{sup F}e y 63{sup N}i en Muestras Ambientales. Problemas Analiticos. Limites Caracteristicos. Calculo Automatizado}
author = {Gasco, C, Navarro, N, Gonzalez, P, Heras, M C, Gapan, M P, Alonso, C, Calderon, A, Sanchez, D, Morante, R, Fernandez, M, Gajate, A, and Alvarez, A}
abstractNote = {The Department of Vigilance Radiologica y Radiactividad Ambiental from CIEMAT has developed an appropriate analytical methodology for Fe-55 and Ni-63 sequential determination in environmental samples based on the procedure used by RIS0 Laboratories. The experimental results obtained in the mayor and minor elements behaviour (soil and air constituents) in the different types of resins used for separating Fe-55 and Ni-63 are showed in this report. The measuring method of both isotopes by scintillation counting has been optimized with Ultima Gold liquid with different concentrations of stable element Fe and Ni. The decontamination factors of different gamma-emitters are experimentally determined in this method with the presence of soil matrix. The Fe-55 and Ni-63 activity concentrations and their associated uncertainties have been calculated from the counting data and sample preparation. A computer application has been implemented in Visual Basic in excel sheets for: (I) obtaining the counting data from spectrometer and counts in each window, (II) representing graphically the background and sample spectrums, (III) determining the activity concentration and its associated uncertainty and (IV) calculating the characteristic limits using ISO 11929 (2007) with various confidence levels. (Author) 30 refs.}
place = {Spain}
year = {2008}
month = {Aug}
}