DOAJ Open Access 2017

Radiological hazard indices and elemental composition of Brazilian and Swiss ornamental rocks

Thammiris El Hajj Paulo Sergio Cardoso Silva Mauro Pietro Angelo Gandolla Gabriel Alencar Silva Almeida Dantas Allan Santos +1 lainnya

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Abstrak

The objective of this paper was to evaluate the radiological risk index of ornamental rocks sold both in Brazil and Europe and to correlate its radioactive content with their chemical composition. The 238U, 232Th and 40K mean values were 62 ± 65, 122 ± 111, 1126 ± 516 Bq kg-1 for Brazilian and 93 ± 59, 70 ± 67 and 1005 ± 780 Bq kg-1 for Swiss samples, respectively. The radiological index: radium equivalent, external hazard index, absorbed dose rate in air, annual gonadal equivalent dose, annual effective dose equivalent and excess lifetime cancer risk for Brazilian and Swiss samples were calculated. The main contribution for the radiological indices observed was the radionuclide 232Th, which is associated with REE, Br, Hf, Na, Rb, Sb and Zr in the rock matrix.

Topik & Kata Kunci

Medical physics. Medical radiology. Nuclear medicine Radioactivity and radioactive substances

Penulis (6)

Thammiris El Hajj

Paulo Sergio Cardoso Silva

Mauro Pietro Angelo Gandolla

Gabriel Alencar Silva Almeida Dantas

Allan Santos

Homero Delboni Jr.

Format Sitasi

APA MLA BibTeX

Hajj, T.E., Silva, P.S.C., Gandolla, M.P.A., Dantas, G.A.S.A., Santos, A., Jr., H.D. (2017). Radiological hazard indices and elemental composition of Brazilian and Swiss ornamental rocks. https://doi.org/10.15392/bjrs.v5i2.269

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Informasi Jurnal

Tahun Terbit: 2017
Sumber Database: DOAJ
DOI: 10.15392/bjrs.v5i2.269
Akses: Open Access ✓