Study of Araucaria angustifolia nuts by Gamma Spectrometry and X-Ray Fluorescence
The seed of Araucaria angustifolia is largely produced and consumed in Parana state, Brazil. It has an estimated annual consumption of approximately 0.167 kg per capita. The samples of seeds were acquired in 8 different commercial points of Londrina city in the state of Paraná, Brazil. To determine...
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| Format: | Article |
| Language: | Spanish |
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Sociedad Científica del Paraguay
2019-12-01
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| Series: | Revista de la Sociedad Científica del Paraguay |
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| Online Access: | http://sociedadcientifica.org.py/ojs/index.php/rscpy/article/view/97 |
| _version_ | 1818530951195525120 |
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| author | Edher Zacarías Herrera Avacir Casanova Andrello Carlos Roberto Appoloni |
| author_facet | Edher Zacarías Herrera Avacir Casanova Andrello Carlos Roberto Appoloni |
| author_sort | Edher Zacarías Herrera |
| collection | DOAJ |
| description | The seed of Araucaria angustifolia is largely produced and consumed in Parana state, Brazil. It has an estimated annual consumption of approximately 0.167 kg per capita. The samples of seeds were acquired in 8 different commercial points of Londrina city in the state of Paraná, Brazil. To determine the natural level of radiation and elemental composition were analysed the seed pulp and peels, to determine the level of radiation in these samples and to calculate the effective dose per intake, the gamma ray spectrometry was applied using the HPGe detector with a 60% relative efficiency, and the X-rays Fluorescent by Dispersive Energy (EDXRF) was applied for elemental identification of the composition with a spectrometer from Shimadzu EDX-720 model. The samples were qualitatively analyzed by EDXRF, where the elements K, Fe, Cu, Zn, Rb, Ca, P, Mg and Sr were found in pulp and peels of seed, however, the elements Mg and Sr were detected only in the peel samples. The results obtained by gamma spectrometry showed that the radioactive activities in the Araucaria angustifolia pulp per kilogram in nature, for 226Ra ranged from 0.691 to 2.269 Bq/kg, the interval activity measured for the 228Ra were 0.386 to 1.767 Bq/kg and the 40K were 283.405 to 1,536.820 Bq/kg. Activities of 137Cs were detected in the pulp and peels of seed. The average dose per intake was 0.68 µSv/year for 226Ra and 0.35 µSv/year for 228Ra. |
| first_indexed | 2024-12-11T17:26:11Z |
| format | Article |
| id | doaj.art-4fc6a02075f8488fb330bc7d52ad33b2 |
| institution | Directory Open Access Journal |
| issn | 0379-9123 2617-4731 |
| language | Spanish |
| last_indexed | 2024-12-11T17:26:11Z |
| publishDate | 2019-12-01 |
| publisher | Sociedad Científica del Paraguay |
| record_format | Article |
| series | Revista de la Sociedad Científica del Paraguay |
| spelling | doaj.art-4fc6a02075f8488fb330bc7d52ad33b22022-12-22T00:56:58ZspaSociedad Científica del ParaguayRevista de la Sociedad Científica del Paraguay0379-91232617-47312019-12-0124226227310.32480/rscp.2019-24-2.262-27397Study of Araucaria angustifolia nuts by Gamma Spectrometry and X-Ray FluorescenceEdher Zacarías HerreraAvacir Casanova AndrelloCarlos Roberto AppoloniThe seed of Araucaria angustifolia is largely produced and consumed in Parana state, Brazil. It has an estimated annual consumption of approximately 0.167 kg per capita. The samples of seeds were acquired in 8 different commercial points of Londrina city in the state of Paraná, Brazil. To determine the natural level of radiation and elemental composition were analysed the seed pulp and peels, to determine the level of radiation in these samples and to calculate the effective dose per intake, the gamma ray spectrometry was applied using the HPGe detector with a 60% relative efficiency, and the X-rays Fluorescent by Dispersive Energy (EDXRF) was applied for elemental identification of the composition with a spectrometer from Shimadzu EDX-720 model. The samples were qualitatively analyzed by EDXRF, where the elements K, Fe, Cu, Zn, Rb, Ca, P, Mg and Sr were found in pulp and peels of seed, however, the elements Mg and Sr were detected only in the peel samples. The results obtained by gamma spectrometry showed that the radioactive activities in the Araucaria angustifolia pulp per kilogram in nature, for 226Ra ranged from 0.691 to 2.269 Bq/kg, the interval activity measured for the 228Ra were 0.386 to 1.767 Bq/kg and the 40K were 283.405 to 1,536.820 Bq/kg. Activities of 137Cs were detected in the pulp and peels of seed. The average dose per intake was 0.68 µSv/year for 226Ra and 0.35 µSv/year for 228Ra.http://sociedadcientifica.org.py/ojs/index.php/rscpy/article/view/97araucaria angustifoliaedxrfdoseradiation |
| spellingShingle | Edher Zacarías Herrera Avacir Casanova Andrello Carlos Roberto Appoloni Study of Araucaria angustifolia nuts by Gamma Spectrometry and X-Ray Fluorescence Revista de la Sociedad Científica del Paraguay araucaria angustifolia edxrf dose radiation |
| title | Study of Araucaria angustifolia nuts by Gamma Spectrometry and X-Ray Fluorescence |
| title_full | Study of Araucaria angustifolia nuts by Gamma Spectrometry and X-Ray Fluorescence |
| title_fullStr | Study of Araucaria angustifolia nuts by Gamma Spectrometry and X-Ray Fluorescence |
| title_full_unstemmed | Study of Araucaria angustifolia nuts by Gamma Spectrometry and X-Ray Fluorescence |
| title_short | Study of Araucaria angustifolia nuts by Gamma Spectrometry and X-Ray Fluorescence |
| title_sort | study of araucaria angustifolia nuts by gamma spectrometry and x ray fluorescence |
| topic | araucaria angustifolia edxrf dose radiation |
| url | http://sociedadcientifica.org.py/ojs/index.php/rscpy/article/view/97 |
| work_keys_str_mv | AT edherzacariasherrera studyofaraucariaangustifolianutsbygammaspectrometryandxrayfluorescence AT avacircasanovaandrello studyofaraucariaangustifolianutsbygammaspectrometryandxrayfluorescence AT carlosrobertoappoloni studyofaraucariaangustifolianutsbygammaspectrometryandxrayfluorescence |