Abstract
Representative banded iron-formations (BIFs) from various locations of the eastern Indian geological belt were investigated by instrumental neutron activation analysis (INAA). After pre-concentration, irradiation was carried out using a neutron flux of 5.1·1016 m−2·s−1, 1.0·1015 m−2·s−1 and 3.7·1015 m−2s−1, with thermal, epi-thermal and fast neutrons, respectively. The activities in these samples were measured by a HPGe detector. Ten rare-earth elements, such as La, Ce, Nd, Sm, Eu, Tb, Ho, Tm, Yb and Lu, have been qualitatively identified and quantitatively estimated in these samples. The present investigation is an example of employing a pre-concentration method for high iron-containing ores prior to neutron activation analysis.
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Nayak, P.K., Wierczinski, B. & Lahiri, S. Rare-earth elemental analysis of banded iron-formations by instrumental neutron activation analysis. J Radioanal Nucl Chem 278, 179–184 (2008). https://doi.org/10.1007/s10967-007-7170-7
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DOI: https://doi.org/10.1007/s10967-007-7170-7