Investigation of the efficiency of the sample pretreatment stage for the determination of the Rare Earth Elements in rock samples by inductively coupled plasma mass spectrometry technique

The article presents new petrogeochemical data on the Middle Miocene-Pliocene volcanic rocks from central part of Iturup Island (Great Kurile Chain). It is shown that volcanism of the Middle Miocene-Early Pliocene age in the central part of the Iturup Island took place in a suprasubduction setting. The distribution of high field strength elements (HFSE) and their ratio in the basaltoids indicate their formation upon partial melting of the depleted upper mantle, while the enrichment of rocks with large ionic lithophilic elements (LILE) indicates both a fluid mantle additive introduced into the melts during the evolution of primary magma and the participation of a low-temperature suprasubduction fluid. The established differences in the composition of the basaltoids of the frontal and rear zones due to the limited number of analyzed samples are considered preliminary. Thus, basaltoids in the rear zone are distinguished by higher concentrations of Th, Pb, HFSE (Nb, Zr, Y, Hf), relative enrichment in LREE, pronounced negative Zr and Hf anomalies, and positive Eu.

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“…На врезке -расположение о. Итуруп на географической схеме Охотоморского региона. (Fedyunina et al, 2012).…”

Section: краткая геологическая характеристикаunclassified

Volcanism of the Early Formation Stage of Iturup Island (Great Kurile Chain)

Федоров¹,

Tsukanov²,

Geptner³

et al. 2021

Bulletin of KRAESC. Earth Sciences

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“…The ICP-MS method is much more appropriate for REE analysis, but it is also subject to spectral interferences including difficult to correct for polyatomic ions which the lanthanides usually form in plasma. The typically low content of REEs in rock means careful sample preparation is essential to avoid analyte loss and/or solution contamination, making the entire procedure a crucial part of the analysis [5,6]. As a result, the ICP-MS technique becomes the most expensive one for REE determination [1].…”

Section: Introductionmentioning

confidence: 99%

Rare earths analysis of rock samples by instrumental neutron activation analysis, internal standard method

Silachyov

2016

J Radioanal Nucl Chem

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The application of instrumental neutron activation analysis for the determination of long-lived rare earth elements (REE) in rock samples is considered in this work. Two different methods are statistically compared: the well established external standard method carried out using standard reference materials, and the internal standard method (ISM), using Fe, determined through X-ray fluorescence analysis, as an element-comparator. The ISM proved to be the more precise method for a wide range of REE contents and can be recommended for routine practice.

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“…Europium is being used for instance in efficient blue-emitting BaMgAl 10 O 17 :Eu(II) and red-emitting Y 2 O 3 : Eu(III) in LEDs and plasma screens. [1][2][3] The electric-dipole and parity-allowed 4f 7 -4f 6 5d transition in Eu(II) produces high quantum yields and thus high emission intensities. In contrast to trivalent europium with an f-f transition Eu(II) further exhibits a strong dependence of the emission wavelength on the coordination of the activator ion.…”

Section: Introductionmentioning

confidence: 99%