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Malaysian Inst. for Nuclear Technology Research MINT, Bangi (Malaysia); Reactor Interest Group RIG, Bangi (Malaysia); 788 p; 2005; p. 29-41; Colloquium of Reactor Interest Group (RIG) 2004; Bandar Baru Bangi (Malaysia); 25 Jun 2004; Available at Malaysian Inst. for Nuclear Technology Research (MINT), Bangi, Malaysia; Ainon@mint.gov.my; Presentation at the colloquium
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[en] The scope of radioanalysis can be enlarged substantially by preconcentration. The minimal concentration factor required depends on the concentration to be determined, the limit of determination of the analytical technique and the maximal acceptable sample-weight. Simultaneously, the preconcentration step may cause a decontamination. In post-irradiation chemistry this is usually the crucial parameter. The present paper proposes the classification of (pre-) concentration techniques by the relation between the concentration-factor X and the decontamination-factor Y. In addition, three other criteria here are used to judge the applicability in combination with the analytical technique chosen. They stem from the minimal representative and the maximal acceptable sample-weights and the maximal acceptable dose-rate. The features of a particular combination of (pre-) concentration and analytical technique can be visualized in an X-Y graph. (author)
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International symposium on trace analysis and technological development; Bombay, India; 16 - 19 Feb 1981
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Journal Article
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Pure and Applied Chemistry; ISSN 0033-4545;
; v. 54(4); p. 755-767

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AbstractAbstract
[en] Published in summary form only
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Frana, J.; Obrusnik, I. (eds.); Ceskoslovenska Spektroskopicka Spolecnost, Prague (Czechoslovakia); Ceskoslovenska Spolecnost Chemicka, Prague (Czechoslovakia); 39 p; May 1992; p. 5; Conference on instrumental activation analysis IAA 92; Klucenice (Czechoslovakia); 18-22 May 1992
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Stverak, B.; Dryak, P.; Hospes, M.
Abstracts of papers presented at conference on instrumental activation analysis IAA '791979
Abstracts of papers presented at conference on instrumental activation analysis IAA '791979
AbstractAbstract
No abstract available
Original Title
Moznosti aktivacni analyzy pro overeni pravosti umeleckych predmetu
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1657070CS: 1661400CS; p. 25; May 1979; p. 25; Conference on instrumental activation analysis IAA '79; Klucenice, Czechoslovakia; 4 - 8 Jun 1979; Published in summary form only.
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Rogero, S.O.; Saiki, M.; Dallberto, M.L.; Nascimento, P.H.S.
Associacao Brasileira de Energia Nuclear, Rio de Janeiro, RJ (Brazil)1990
Associacao Brasileira de Energia Nuclear, Rio de Janeiro, RJ (Brazil)1990
AbstractAbstract
[en] The purpose of this work is to apply the method of instrumental neutron activation analysis to determine the trace elements in lung samples from autopsy of smoker and non smoker individuals. In this preliminary study, the adequate conditions for analysis and preparation of lung samples had been established. The frozen samples were homogenized, lyophilized and sterllized using 60Co source. The samples and the standards were irradiated in the IEA-RI reactor under a thermal neutron flux of 3.7 X 1011 n.cm-2.s-1, Au, Br, Co, Cs, Fe, Rb, Sc, Se and Zn were determined. The countings were carried out with a hiperpure (Ge) detector connected to a 4096 channels analyser and a microcomputer. The results obtained indicate a good reproducibility. The accuracy of the method was evaluated analysing reference materials Bowen's Kale from IUPAC and Bovine Liver from NIST. (author)
Original Title
Analise por ativacao de elementos tracos em amostras de tecido pulmonar
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Source
1990; 9 p; 3. General Brazilian Congress of Nuclear Energy; Rio de Janeiro, RJ (Brazil); 22-27 Jul 1990; Available from the Library of the Comissao Nacional de Energia Nuclear, RJ, Brazil
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Hanasiro, L.N.; Saiki, M.
Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)1990
Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)1990
AbstractAbstract
[en] Published in summary form only
Original Title
Analise por ativacao neutronica de elementos tracos em cabelos humanos
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Source
1990; 1 p
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AbstractAbstract
[en] A single comparator method with its accuracy has been studied for determining multielement by reactor neutron activation analysis. Spectral index at the irradiation position of each sample was determined using two flux monitors of Au and Co, one of which was used as a single comparator. The uncertainties of nuclear data related to the method were investigated for 18 elements and the error of the analytical result due to the uncertainties of nuclear data related is found to be less than 6%. The analytical results of 4 USGS reference samples agree well within 15% deviation with the results evaluated by USGS. (Author)
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[en] Trace elements in eleven kinds of coal were determined by thermal neutron activation analysis using the multi-element comparator technique. Coal samples and N.B.S Coal-standard reference material (1632a-Bituminous) were irradiated for 1 min, 10 min and 7 hr at a flux of 1012 n/cm2-s in the University of London Reactor. The spectra w.re processed using the SAMPO program. The results of different irradiation times were compared to minimize the irradiation time for a particular group of elements. The results were analysed with the CLUSTER ANALYSIS program adapted to PDP11/04 minicomputer to find out the similarity of elemental concentrations for each kind of coal
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Turkish Journal of Nuclear Sciences; v. 8(1); p. 29-34
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[en] Short communication. A summary of an essay submitted for the Master of Science degree. Leningrad State University, Faculty of Chemistry, Radiochemistry Department, 1985
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Aalam Al-Zarra; CODEN AAALE; (no.2); p. 56
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[en] N.A.A. technique is well known for its sensitivity, precision and selectivity. About 50 elements could be analyzed by this method. The main field application of this technique are in biomedical, forensic science and environmental studies, geology, agriculture and quality control. The main aim of this paper is to provide basic knowledge of this technique and its application in those fields. (author)
Original Title
Analisa pengaktifan neutron (APN)
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Journal Article
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Jurnal Sains Nukluar; ISSN 0127-2810;
; v. 1(2); p. 34-43

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