Advances in Materials Science and Engineering Assessment of Gamma Radiation Hazards Related to Geologic Materials: Comparison of Results by Field Gamma Spectrometry and Laboratory Methods
Geologic materials are a potential source of external gamma radiation in buildings due to the presence of radioisotopes (40K and isotopes from U and Th decay families). The contents of these radioisotopes can be evaluated by laboratory analyses that require the extraction of samples, with associated...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/5706404 |
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| _version_ | 1832559987625295872 |
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| author | Miguel Couto Jorge Sanjurjo-Sánchez Carlos Alves |
| author_facet | Miguel Couto Jorge Sanjurjo-Sánchez Carlos Alves |
| author_sort | Miguel Couto |
| collection | DOAJ |
| description | Geologic materials are a potential source of external gamma radiation in buildings due to the presence of radioisotopes (40K and isotopes from U and Th decay families). The contents of these radioisotopes can be evaluated by laboratory analyses that require the extraction of samples, with associated financial and time constraints, and it is also difficult to perform on materials already applied in existing structures. In this work, portable gamma spectrometry results are compared with laboratory analyses in terms of radioisotopes estimations, and the activity concentration index is calculated from them (which assess the conjoint contribution of the different radioisotopes to the external gamma radiation). The studied objects are rocks and their “in situ” weathering products. The results obtained indicate that despite several problems posed by field measurements with portable gamma spectrometry, namely, in terms of the geometric characteristics of the objects measured, this technique has the potential to identify materials with different hazard levels related to external gamma radiation. |
| format | Article |
| id | doaj-art-9b5f0b3b9e2e434c86d5d7299d1724e4 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-9b5f0b3b9e2e434c86d5d7299d1724e42025-02-03T01:28:49ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/57064045706404Advances in Materials Science and Engineering Assessment of Gamma Radiation Hazards Related to Geologic Materials: Comparison of Results by Field Gamma Spectrometry and Laboratory MethodsMiguel Couto0Jorge Sanjurjo-Sánchez1Carlos Alves2Earth Sciences Department, School of Sciences, University of Minho, 4710-057 Braga, PortugalInstituto Universitario de Xeoloxía “Isidro Parga Pondal”, University of A Coruña, 915001 A Coruña, SpainEarth Sciences Department, LandS/Lab2PT-Landscape, Heritage and Territory Laboratory (FCT UID/AUR/04509/2013, FEDER COMPETE POCI-01-0145-FEDER-007528), School of Sciences, University of Minho, 4710-057 Braga, PortugalGeologic materials are a potential source of external gamma radiation in buildings due to the presence of radioisotopes (40K and isotopes from U and Th decay families). The contents of these radioisotopes can be evaluated by laboratory analyses that require the extraction of samples, with associated financial and time constraints, and it is also difficult to perform on materials already applied in existing structures. In this work, portable gamma spectrometry results are compared with laboratory analyses in terms of radioisotopes estimations, and the activity concentration index is calculated from them (which assess the conjoint contribution of the different radioisotopes to the external gamma radiation). The studied objects are rocks and their “in situ” weathering products. The results obtained indicate that despite several problems posed by field measurements with portable gamma spectrometry, namely, in terms of the geometric characteristics of the objects measured, this technique has the potential to identify materials with different hazard levels related to external gamma radiation.http://dx.doi.org/10.1155/2018/5706404 |
| spellingShingle | Miguel Couto Jorge Sanjurjo-Sánchez Carlos Alves Advances in Materials Science and Engineering Assessment of Gamma Radiation Hazards Related to Geologic Materials: Comparison of Results by Field Gamma Spectrometry and Laboratory Methods Advances in Materials Science and Engineering |
| title | Advances in Materials Science and Engineering Assessment of Gamma Radiation Hazards Related to Geologic Materials: Comparison of Results by Field Gamma Spectrometry and Laboratory Methods |
| title_full | Advances in Materials Science and Engineering Assessment of Gamma Radiation Hazards Related to Geologic Materials: Comparison of Results by Field Gamma Spectrometry and Laboratory Methods |
| title_fullStr | Advances in Materials Science and Engineering Assessment of Gamma Radiation Hazards Related to Geologic Materials: Comparison of Results by Field Gamma Spectrometry and Laboratory Methods |
| title_full_unstemmed | Advances in Materials Science and Engineering Assessment of Gamma Radiation Hazards Related to Geologic Materials: Comparison of Results by Field Gamma Spectrometry and Laboratory Methods |
| title_short | Advances in Materials Science and Engineering Assessment of Gamma Radiation Hazards Related to Geologic Materials: Comparison of Results by Field Gamma Spectrometry and Laboratory Methods |
| title_sort | advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials comparison of results by field gamma spectrometry and laboratory methods |
| url | http://dx.doi.org/10.1155/2018/5706404 |
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