ESTIMATION OF EXPOSURE LEVELS OF TERRESTRIAL BIOTA AND RADIATION EXPOSURE AROUND IPEN´S FACILITIES
Humans are exposed to natural radiation; soil is a major source of external and internal exposure of radiation. The aim of this study is to evaluate the exposure levels of terrestrial biota and to estimate the radiation exposure around Instituto of Pesquisas Energéticas e Nucleares (IPEN) facilities...
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| Format: | Article |
| Language: | English |
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Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)
2021-04-01
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| Series: | Brazilian Journal of Radiation Sciences |
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| Online Access: | https://bjrs.org.br/revista/index.php/REVISTA/article/view/1235 |
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| author | Fernanda Cavalcante Marcelo Bessa Nisti Cátia Heloisa R. Saueia |
| author_facet | Fernanda Cavalcante Marcelo Bessa Nisti Cátia Heloisa R. Saueia |
| author_sort | Fernanda Cavalcante |
| collection | DOAJ |
| description | Humans are exposed to natural radiation; soil is a major source of external and internal exposure of radiation. The aim of this study is to evaluate the exposure levels of terrestrial biota and to estimate the radiation exposure around Instituto of Pesquisas Energéticas e Nucleares (IPEN) facilities. The ERICA Tool was used to calculate the exposure levels of terrestrial biota; the estimation of radiation exposure for humans was determined using a model proposed by UNSCEAR and Excess Lifetime Cancer Risk. Six soil points were collected and their activity concentrations were measured by gamma spectrometry. Two soil points showed a risk coefficient greater than 1, suggesting that the screening dose ratio of 10μGy h-1 might be exceeding for the most exposed species, namely lichen and bryophytes, even though the activity concentration values of the analyzed radionuclides showed no evidence of soil contamination due to the atmospheric discharges of the IPEN facilities. Thus, the radioactive discharges in the soil from all facilities are negligible. Hence, the authors concluded that the ERICA Tool can be useful in assisting environmental radiological monitoring program for decision-making, especially regarding: points collected, sample types and sampling frequency. |
| format | Article |
| id | doaj-art-dc1ef6a8436b4e6882892440c4e20fe8 |
| institution | DOAJ |
| issn | 2319-0612 |
| language | English |
| publishDate | 2021-04-01 |
| publisher | Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR) |
| record_format | Article |
| series | Brazilian Journal of Radiation Sciences |
| spelling | doaj-art-dc1ef6a8436b4e6882892440c4e20fe82025-08-20T02:39:15ZengBrazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)Brazilian Journal of Radiation Sciences2319-06122021-04-0191A10.15392/bjrs.v9i1A.1235955ESTIMATION OF EXPOSURE LEVELS OF TERRESTRIAL BIOTA AND RADIATION EXPOSURE AROUND IPEN´S FACILITIESFernanda Cavalcante0Marcelo Bessa Nisti1Cátia Heloisa R. Saueia2Instituto de Pesquisas Energéticas e Nucleares IPEN-CNEN/SPInstituto de Pesquisas Energéticas e Nucleares IPEN-CNEN/SPInstituto de Pesquisas Energéticas e Nucleares IPEN-CNEN/SPHumans are exposed to natural radiation; soil is a major source of external and internal exposure of radiation. The aim of this study is to evaluate the exposure levels of terrestrial biota and to estimate the radiation exposure around Instituto of Pesquisas Energéticas e Nucleares (IPEN) facilities. The ERICA Tool was used to calculate the exposure levels of terrestrial biota; the estimation of radiation exposure for humans was determined using a model proposed by UNSCEAR and Excess Lifetime Cancer Risk. Six soil points were collected and their activity concentrations were measured by gamma spectrometry. Two soil points showed a risk coefficient greater than 1, suggesting that the screening dose ratio of 10μGy h-1 might be exceeding for the most exposed species, namely lichen and bryophytes, even though the activity concentration values of the analyzed radionuclides showed no evidence of soil contamination due to the atmospheric discharges of the IPEN facilities. Thus, the radioactive discharges in the soil from all facilities are negligible. Hence, the authors concluded that the ERICA Tool can be useful in assisting environmental radiological monitoring program for decision-making, especially regarding: points collected, sample types and sampling frequency.https://bjrs.org.br/revista/index.php/REVISTA/article/view/1235estimation of radiation exposureerica toolbiotagamma spectrometry |
| spellingShingle | Fernanda Cavalcante Marcelo Bessa Nisti Cátia Heloisa R. Saueia ESTIMATION OF EXPOSURE LEVELS OF TERRESTRIAL BIOTA AND RADIATION EXPOSURE AROUND IPEN´S FACILITIES Brazilian Journal of Radiation Sciences estimation of radiation exposure erica tool biota gamma spectrometry |
| title | ESTIMATION OF EXPOSURE LEVELS OF TERRESTRIAL BIOTA AND RADIATION EXPOSURE AROUND IPEN´S FACILITIES |
| title_full | ESTIMATION OF EXPOSURE LEVELS OF TERRESTRIAL BIOTA AND RADIATION EXPOSURE AROUND IPEN´S FACILITIES |
| title_fullStr | ESTIMATION OF EXPOSURE LEVELS OF TERRESTRIAL BIOTA AND RADIATION EXPOSURE AROUND IPEN´S FACILITIES |
| title_full_unstemmed | ESTIMATION OF EXPOSURE LEVELS OF TERRESTRIAL BIOTA AND RADIATION EXPOSURE AROUND IPEN´S FACILITIES |
| title_short | ESTIMATION OF EXPOSURE LEVELS OF TERRESTRIAL BIOTA AND RADIATION EXPOSURE AROUND IPEN´S FACILITIES |
| title_sort | estimation of exposure levels of terrestrial biota and radiation exposure around ipen´s facilities |
| topic | estimation of radiation exposure erica tool biota gamma spectrometry |
| url | https://bjrs.org.br/revista/index.php/REVISTA/article/view/1235 |
| work_keys_str_mv | AT fernandacavalcante estimationofexposurelevelsofterrestrialbiotaandradiationexposurearoundipensfacilities AT marcelobessanisti estimationofexposurelevelsofterrestrialbiotaandradiationexposurearoundipensfacilities AT catiaheloisarsaueia estimationofexposurelevelsofterrestrialbiotaandradiationexposurearoundipensfacilities |