Comparison of the analytical capabilities of a facility with the arc double-jet argon plasmatron and a Grand-Potok complex in determination of the content of rare-earth elements in geological samples by atomic emission spectrometry
https://doi.org/10.26896/1028-6861-2022-88-1-II-77-82
Abstract
The method of atomic emission spectrometry with arc spectrum excitation provides determination of rare earth elements (REE) in geological samples by direct analysis of solid samples without a long-term preliminary sample preparation. Using the analysis of a rare-earth ore sample from the Tomtor niobium-rare-earth deposit as an example, we compared the analytical capabilities of a Grand Potok installation and a two-jet arc plasmatron (TJP) in combination with a DFS-458S spectrograph equipped with a multichannel emission spectrum analyzer (MAES). It is shown that a higher temperature of the TJP plasma (~7500 K) compared to that of the arc discharge (~5500 K) and the shift in the recording range of a DFS-458S spectrum to longer wavelengths (280 – 245 nm) provided a more reliable determination of REE using a larger number of analytical lines with lower detection limits. The correctness of the results of REE determination was confirmed by comparison with the data obtained by the ICP-MS method.
About the Authors
A. S. Shavekin
V. S. Sobolev Institute of Geology and Mineralogy SB RAS
Russian Federation
Russian Federation
Aleksei S. Shavekin
630090, Novosibirsk, prosp. Akademika Koptyuga, 3
S. B. Zayakina
V. S. Sobolev Institute of Geology and Mineralogy SB RAS
Russian Federation
Russian Federation
Svetlana B. Zayakina
630090, Novosibirsk, prosp. Akademika Koptyuga, 3
S. M. Zhmodik
V. S. Sobolev Institute of Geology and Mineralogy SB RAS
Russian Federation
Russian Federation
Sergey M. Zhmodik
630090, Novosibirsk, prosp. Akademika Koptyuga, 3
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28.
Review
For citations:
Shavekin A.S., Zayakina S.B., Zhmodik S.M. Comparison of the analytical capabilities of a facility with the arc double-jet argon plasmatron and a Grand-Potok complex in determination of the content of rare-earth elements in geological samples by atomic emission spectrometry. Industrial laboratory. Diagnostics of materials. 2022;88(1(II)):77-82. (In Russ.) https://doi.org/10.26896/1028-6861-2022-88-1-II-77-82
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