k 0-INAA of biological matrices at IPEN neutron activation analysis laboratory, São Paulo, using the k0_IAEA software
| Autor: | R. Semmler, D. C. Puerta, Ana Maria Graciano Figueiredo, R. Jaćimović |
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| Rok vydání: | 2014 |
| Předmět: |
Flux distribution
Chemistry Health Toxicology and Mutagenesis Radiochemistry Public Health Environmental and Occupational Health Nuclear reactor Pollution Flux ratio Analytical Chemistry law.invention Nuclear Energy and Engineering law NIST Radiology Nuclear Medicine and imaging Neutron activation analysis Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 300:637-644 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | This study presents the results obtained in the application of the k 0-standardization method at the Neutron Activation Analysis Laboratory at IPEN (LAN-IPEN), for biological sample analysis, by using the k0_IAEA software, provided by the International Atomic Energy Agency (IAEA). The thermal to epithermal flux ratio f and the shape factor α of the epithermal flux distribution of the IEA-R1 nuclear reactor of IPEN were determined for the pneumatic irradiation facility and one selected irradiation position, for short and long irradiations, respectively. To obtain these factors, the “bare triple-monitor” method with 197Au–96Zr–94Zr was used. To evaluate the accuracy of the results, bias (%) and E n-number test were applied to the results obtained in the analysis of the biological reference materials NIST SRM 1547 peach leaves, INCT-MPH-2 mixed polish herbs and NIST SRM 1573a tomato leaves. Bias (%), for most elements, ranged from 0 to 30 %, in relation to certified values. E n-number values showed that, with few exceptions (Na in NIST SRM 1547 and NIST SRM 1573a, and Al, Cr, Sc and Zn in INCT-MPH-2), the results were within a 95 % CI. These results pointed to the possibility of using the k 0-INAA method with the k0_IAEA software for analysis of biological samples at LAN-IPEN. |
| Databáze: | OpenAIRE |
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