Abstract
High sensitivity analytical techniques, such as ICP-MS, MIP-AES, XRF etc., in rare earth hydrometallurgy, have drastically developed products quality. However, these offline analysis methods may struggle to achieve real-time feedback. A potential alternative method was investigated to be a new usage of lanthanum analysis through detecting the 1435.8 keV gamma ray in situ, emitted by 138La. A high purity germanium gamma spectrometry was utilized to obtain the experimental minimum detectable concentration (MDC) and the sensitivity (S), which ranges from 4.66 to 4.99 g L−1 and (1.85 to 1.90) × 10−3 cps (g/L)−1, respectively.
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Acknowledgements
This study was supported by the National Natural Science Foundation of China (12105043) and Opening Fund of Provincial Key Lab of Applied Nuclear Technology in Geosciences (gnzds201911). We are grateful to Dr. Qi Zeng in EUCT for his technical discussion.
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Zhao, J., Xing, Y., Ge, L. et al. Direct analysis of lanthanum in extraction process by in-situ gamma spectrometry. J Radioanal Nucl Chem 331, 3807–3817 (2022). https://doi.org/10.1007/s10967-022-08399-7
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DOI: https://doi.org/10.1007/s10967-022-08399-7