Wavelength dispersive X-ray fluorescence determination of major oxides in bottom and peat sediments for paleoclimatic studies

Amosova, Alena A.; Чубаров, В. М.; Pashkova, Galina V.; Finkelshtein, А. L.; Безрукова, Е. В.

doi:10.1016/j.apradiso.2018.11.004

Cited by 16 publications

(12 citation statements)

References 24 publications

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“…To construct the calibration curves, we used certified reference materials (CRMs) of sedimentary rocks, previously used for the analysis of bottom and peat sediments prepared by the fusion technique 26 . To obtain the correct results a set of CRMs should be close in mineralogical and chemical composition to analyzed samples.…”

Section: Methodsmentioning

confidence: 99%

“…Several papers are dedicated to elemental analysis of peat for paleoclimatology, but only a limited set of elements was determined 1,7,10,11,13 . We applied the XRF method for the determination of rock‐forming elements in peats using preliminary sample calcination and homogenization by fusion and certified reference materials (CRMs) of sedimentary rock for calibration 24–26 . However, the calcination of samples containing high organic matter contents can cause possible losses of some elements, whereas the fusion is more labor‐consuming than the analysis of powder samples.…”

Section: Introductionmentioning

confidence: 99%

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Features of X‐ray fluorescence determination of rock‐forming elements in powder samples of peat sediments

2021

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The features of rock‐forming elements determination in powder samples of peat sediments are considered. Based on theoretical calculations and experimental data, the mineralogical and particle size effects on the X‐ray fluorescence intensity have been estimated. For routine analysis, powder rock samples are usually milled to a particle size of 10–60 μm. Theoretically, estimated variations of rock‐forming elements analytical lines intensities in different minerals are up to 30%, and the particle size effect cannot be eliminated simultaneously for all rock‐forming elements. Experimental estimation shows that the impossibility of the particle size distribution control can lead to significant variations in the intensities of the analytical lines (3%–18%) that is mainly corresponding to theoretical estimation. Fine milling allowed us to achieve an average particle size of fewer than 20 μm and reduce the measurement uncertainty by 1.5–2 times. 12 samples of peat sediments with organic matter content up to 70 wt% were analyzed by X‐ray fluorescence analysis using different sample preparation techniques, as well as by certified methods. The accuracy of X‐ray fluorescence analysis of peat sediments prepared as pressed pellets varies from 1.5 to 11 rel% depending on compound contents. It is more than for samples prepared as fused beads, however, the proposed method can be used to determine the variations of rock‐forming elements contents in peat sediments where the content variations exceed the measurement uncertainty, and accuracy of analysis is sufficient for further paleoecological reconstructions.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Features of X‐ray fluorescence determination of rock‐forming elements in powder samples of peat sediments

2021

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“…To reconstruct the geochemical evolution of the catchment, the X-ray fluorescence analysis method was used, which was implemented on a wavelengthdispersive X-Ray Fluorescence spectrometer S8 Tiger (Bruker AXS, Germany). The proposed technique (Amosova, 2019) allows the determination of the main rock-forming (Na, Mg, Al, Si, P, K, Ca, Ti, Mn, Fe) elements from small mass samples, which is important when there is a shortage of the studied core material of bottom sediments. The values of loss on ignition at 950 °C including "combined water," carbon dioxide from carbonates, and organic matter were determined by the gravimetric technique and varied from 7 to 16 wt.…”

Section: Methodsmentioning

confidence: 99%

The first records of climatic changes in the basin of Lake Khikushka (Eastern Sayan) in the Late Glacial Holocene

Amosova

Чубаров

Smelyy

et al. 2020

LFWB

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“…X‐ray fluorescence (XRF) is often applied for this purpose. It is a well‐accepted and actively used analytical method to investigate the elemental composition of non‐destructive materials including marine and terrestrial sediments (Rothwell and Rack 2006; Kalugin et al 2007; Amosova et al 2019). The XRF core scanning allows for the investigation of sediment records on subannual timescales, which is especially important for finely laminated or varved sediments (Croudace et al 2006).…”

mentioning

confidence: 99%

“…Sediments for direct bulk elemental analysis are often prepared as fused disks (Ødegård and Hamester 1997; Wu et al 2018; Amosova et al 2019), resin‐embedded samples (Hennekam et al 2015; Shaheen et al 2017) or pressed pellets in the presence of a binder (Klemm and Bombach 2001; Peters and Pettke 2016). The application of fusion increases a sample preparation time and could provide contamination (Eggins 2003; Wu et al 2018).…”

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confidence: 99%

Express multi‐element determination in lake sediments by laser ablation mass‐spectrometry (LA‐ICP‐MS)

Масленникова

Artemyev²,

Штенберг

et al. 2020

Limnology & Ocean Methods

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Analytical data on major and trace elements concentrations in lake sediments are frequently applied in a wide range of limnological, paleolimnological, and environmental studies. Conventionally applied methods are characterized by time-consuming, expensive, and (or) hazardous sample preparation. The proposed express method of simultaneous multi-element determination in lake sediments by laser ablation inductively coupled plasma mass-spectrometry (LA-ICP-MS) of pressed powdered pellets comprises a minimal sample preparation, special laser sampling, and calibration strategy aimed at overcoming the problems of the sample heterogeneity and application of non-matrix-matched external standards. The optimal sampling strategy, providing the best precision results for our simply pressed powdered pellets, was line scanning ablation with a rate of 10 μm s −1 , a laser spot size of 110 μm and a fluence of 8-9 J cm −2. Calibration strategy including external and internal standardization ensured the best precision (<5-10% RSD) and accuracy (within 1-20% of reference values) even with non-matrix-matched external standards (GSD-1g, NIST SRM 612). In comparison with solution ICP-MS, the method recovered significantly higher range of analytes including 10 major and 49 trace elements and ensured a better accuracy of Zr, Hf, Ti, Nb, Ta, Sn, and Sb measurements. Application of the method to the Urals lake sediments (n = 32) showed that LA-ICP-MS results for most trace elements where within 1-30% of the solution ICP-MS data.

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Wavelength dispersive X-ray fluorescence determination of major oxides in bottom and peat sediments for paleoclimatic studies

Cited by 16 publications

References 24 publications

Features of X‐ray fluorescence determination of rock‐forming elements in powder samples of peat sediments

Features of X‐ray fluorescence determination of rock‐forming elements in powder samples of peat sediments

The first records of climatic changes in the basin of Lake Khikushka (Eastern Sayan) in the Late Glacial Holocene

Express multi‐element determination in lake sediments by laser ablation mass‐spectrometry (LA‐ICP‐MS)

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