Abstract
This work aimed to study the capability of INAA absolute method in determining the elemental concentration of 238U and 232Th in the rock samples. The INAA absolute method was implemented in PUSPATI TRIGA Mark II research reactor, Malaysian Nuclear Agency (NM). The accuracy of INAA absolute method was performed by analyzing the IAEA certified reference material (CRM) Soil-7. The analytical results showed the deviations between experimental and certified values were mostly less than 10 % with Z-score in most cases less than 1. In general, the results of analysed CRM Soil-7 show a good agreement between certified and experimental results which mean that the INAA absolute method can be used accurately for elemental analysis of uranium and thorium in various types of samples. The concentration of 238U and 232Th ranged from 1.77 to 24.25 and 0.88 to 95.50 ppm respectively. The highest value of 238U and 232Th was recorded for granite rock sample G17 of 238U and sample G9 of 232Th, whereas the lower value was 1.77 ppm of 238U recorded in sandstone rock and 0.88 ppm of 232Th for gabbro. Moreover, a comparison of the 238U and 232Th results obtained by the INAA absolute method shows an acceptable level of consistency with those obtained by the INAA relative method.
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References
Kafala IS, Macmahon TD (2007) J Radioanal Nucl Chem 271:507–516
Acharya NR, Nair CGA, Reddy RVA, Manohar BS (2002) Appl Radiat Isot 57:391–398
Kafala IS, Macmahon TD (1993) J Radioanal Nucl Chem 169:187–199
Alnour IA, Wagiran H, Ibrahim N, Hamzah S, Wee BS, Elais SM, Karim AJ (2013) J Radioanal Nucl Chem 296:1231–1237
Bereznai T (1980) Fresenius Z Anal Chem 302:353–363
Alnour IA, Ibrahim N, Fen LH (2011) Int J Phys Sci 6:4169–4175
De Corte F (1987) The k0-standardization method—a move to the optimization of NAA. University Gent, Gent
IAEA-TECDOC-1218 (2001) Quality aspects of research reactor operations for instrumental neutron activation analysis, IAEA, Vienna
Madon M (2010) Geol Soc Malaysia Bull 56:15–26
Gobbett DJ, Hutchison CS (1973) Geology of Malay Peninsula. Wiley-Interscience, New York
Alnour IA, Wagiran H, Ibrahim N, Laili Z, Omar M, Hamzah S, Bello YI (2012) Radiat Phys Chem 81:1842–1847
Mizera J, Řanda Z (2010) J Radioanal Nucl Chem 284:157–163
Adesanmi CA, Tubosun IA, Balogun FA, Oladipo AA (1997) Appl Radiat Isot 48:991–996
Omar M, Wan Hassan WF (1999) Nucl Sci J Malaysia 17:73–77
Acknowledgments
The authors would like to thank the Ministry of Higher Education (MOHE) Malaysia and Universiti Teknologi Malaysia (UTM) for their financial supported through research Grant Vot No 03H28. The authors wish to gratefully acknowledge Malaysian Nuclear Agency (NM) staff for their cooperation. Special thanks to Prof. Dr. Wan Fuad Wan Hassan, Hanson Quarry Products (Kulai), Kim Seng Quarry and the Ulu Choh quarry (Kamad Quarry) for providing samples for this study.
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Alnour, I.A., Wagiran, H., Ibrahim, N. et al. Investigate the capability of INAA absolute method to determine the concentrations of 238U and 232Th in rock samples. J Radioanal Nucl Chem 299, 177–186 (2014). https://doi.org/10.1007/s10967-013-2844-9
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DOI: https://doi.org/10.1007/s10967-013-2844-9