Natural radioactivity concentrations of 226Ra, 232Th, and 40K in commercial building materials and their lifetime cancer risk assessment in dwellers
| Autor: | M. Omeje, Adewoyin Oladotun Olusegun, E. Zaidi, A. Akinwumi Sayo, Ehi-Eromosele C. O, M. A. Saeed, Emenike C. PraiseGod, M.R. Usikalu, Emmanuel S. Joel |
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| Rok vydání: | 2018 |
| Předmět: |
Chemistry
Health Toxicology and Mutagenesis Ecological Modeling Mean value 010501 environmental sciences 01 natural sciences Pollution Effective dose (radiation) 030218 nuclear medicine & medical imaging Gamma index 03 medical and health sciences 0302 clinical medicine Animal science Cancer risk assessment Natural radioactivity 0105 earth and related environmental sciences |
| Zdroj: | Human and Ecological Risk Assessment: An International Journal. 24:2036-2053 |
| ISSN: | 1549-7860 1080-7039 |
| DOI: | 10.1080/10807039.2018.1438171 |
| Popis: | Elevated radioactivity levels of 226Ra, 232Th, and 40K in building materials were measured using gamma-ray spectrometry and their associated lifetime cancer risks were also determined. The mean activity concentrations of 226Ra, 232Th, and 40K are 45.72 ± 0.55, 65.90 ± 8.89, and 487.32 ± 15.20 Bq kg−1, respectively. Statistically, the principal component (PC) analysis indicates that higher loadings were recorded in Principal Component One (PC1) with large contribution from 232Th and 40K. The leverage studies indicate that BN Ceramics (BNC) contributes more to the loadings in PC1 followed by Golden Crown Ceramic (GCC) sample. The mean values of 0.399 mSv y−1 do not surpass the world average value of 0.7 mSv y−1. The mean gamma index from the measured samples is 0.644, whereas a mean value of 0.271 for alpha index is noted in the samples. The activity utilization index (AUI) from the samples satisfied the AUI |
| Databáze: | OpenAIRE |
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