Total-reflection X-ray fluorescence spectrometry as a tool for the direct elemental analysis of ores: Application to iron, manganese, ferromanganese, nickel-copper sulfide ores and ferromanganese nodules

Pashkova, Galina V.; Чубаров, В. М.; Akhmetzhanov, Timur F.; Zhilicheva, Alena N.; Mukhamedova, Maria M.; Finkelshtein, А. L.; Belozerova, O. Yu.

doi:10.1016/j.sab.2020.105856

Cited by 23 publications

(14 citation statements)

References 23 publications

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“…TXRF can be applied for direct analysis of iron, manganese, ferromanganese, nickel-copper sulfide ores, oceanic and lacustrine nodules [Pashkova et al, 2020;Akhmetzhanov et al, 2021;Chubarov et al, 2021]. The suspension preparation (5 mL of 1 % Triton X-100 solution and 20 mg of fine powder with a size <10 μm and internal standard of Ga) gives a possibility for fast reliable determination of major and minor elements by the internal standard method with the recovery values 75-125 %.…”

Section: Application Of Txrf To Geological Objectsmentioning

confidence: 99%

“…One of the problems of TXRF analysis is strong peaks overlapping due to poor spectral resolution of the energy-dispersive spectrum. For instance, the differences between the TXRF results and the certified values in CRMs may be more than 30 % for As, Pb, V, Cr, Ba in the nodules due to PbLα/AsKα, BaLα/TiKα, CrKα/VKβ, VKα/TiKβ lines overlapping [Pashkova et al, 2020;Chubarov et al, 2021]. Chemometric approaches may be used to solve this problem [Akhmetzhanov et al, 2021].…”

Section: Application Of Txrf To Geological Objectsmentioning

confidence: 99%

“…TXRF method was developed to analyze the sediments from Lake Baikal and Lake Khara-Nur (Russia) for environmental and paleoclimate studies [Pashkova et al, 2016[Pashkova et al, , 2018a. Samples for multielement analysis were obtained by cutting a sediment core with a certain step.…”

Section: Application Of Txrf To Geological Objectsmentioning

confidence: 99%

“…The external calibrations and correction to the Compton peak signal make it possible to compensate some systematic errors and expand the elements set with Al, K, V, Cr, Zn, Rb, and Ba. TXRF method was also applied to the Br determination in lake sediments with only one difference in quantification procedure: using internal standard of Ge instead of Ga [Pashkova et al, 2016]. The detection limit of Br was 0.4 mg/kg, which is almost two times better than that for the WDXRF method.…”

Section: Application Of Txrf To Geological Objectsmentioning

confidence: 99%

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Application of Total-Reflection X-Ray Fluorescence Spectrometry (Txrf) to Geological Objects: Experience of the TXRF Laboratory, Center for Geodynamics and Geochronology

Maltsev

Pashkova

2022

Geodin. tektonofiz.

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Unlike conventional X-ray fluorescence spectrometry, the total-reflection X-ray fluorescence spectrometry is not a widespread and routine method for analyzing solid samples with mineral matrix, but it has a great potential for geochemical, geological, and archaeological studies. Rapid multi-elemental analysis of very small sample amounts can be performed by the internal standard method which does not require the matrix-matched reference materials. This is an undoubted advantage of the TXRF method over the conventional X-ray fluorescence method, especially if there is a limited available sample amount and a lack of well-characterized reference materials. This paper presents our experience with the application of TXRF spectrometry in the elemental analysis of apatite, ceramics, sediments, ores, and nodules. Special attention has been paid to the sample preparation procedure because it is one of the main sources of errors in the analysis. Preparing thin homogeneous specimen from the solid sample with a complex mineral matrix is not easy. Sample preparation strategy should be chosen considering the features of an analytical object, the content of the elements to be determined, and the accuracy required for a reliable interpretation. Consideration is being given to the examples of the preparation of a suspension for rapid analysis of ores and sediments, and to the original techniques of chemical decomposition for apatite and ceramics.

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Section: Application Of Txrf To Geological Objectsmentioning

confidence: 99%

Section: Application Of Txrf To Geological Objectsmentioning

confidence: 99%

Section: Application Of Txrf To Geological Objectsmentioning

confidence: 99%

Section: Application Of Txrf To Geological Objectsmentioning

confidence: 99%

See 2 more Smart Citations

Application of Total-Reflection X-Ray Fluorescence Spectrometry (Txrf) to Geological Objects: Experience of the TXRF Laboratory, Center for Geodynamics and Geochronology

Maltsev

Pashkova

2022

Geodin. tektonofiz.

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“…Reference [16] analyze ore samples using total-reflection X-ray fluorescence spectrometry. The authors demonstrate that it is possible to reduce the sampling error by decreasing the particle size in the sample.…”

Section: Literature Reviewmentioning

confidence: 99%

Fuzzy Decision Support System for the Calibration of Laboratory-Scale Mill Press Parameters

et al. 2021

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Chemical analyses of iron ore samples are crucial to identifying the characteristics of the ore being mined and processed by mining industries. Moreover, reliable ore content results are fundamental to optimizing the mining plant operation and correctly pricing the final product. An industrial laboratory usually performs hundreds of analyses per day and requires a certain amount of equipment to increase the laboratory capacity. However, the parallel chemical analyses approach demands proper equipment calibration to avoid result variability due to the use of different equipment. This paper proposes a method to help laboratory operators select the correct mill press equipment parameters during calibration. First, we apply the design of experiments (DoE) technique to determine the calibration parameter that affects the final content result. Then, a decision support system (DSS) is developed based on the fuzzy logic approach to adjust the equipment parameters. Results with real data show that the proposed system reduces the standard deviation of the concentrate grade of iron (%Fe) by up to 65.01% and that of the silica concentrate grade (%SiO2) by up to 60.81%. INDEX TERMS Iron content, design of experiments, fuzzy logic, laboratory, chemical analysis.

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Multielement analysis of continental and lacustrine ferromanganese nodules by WDXRF, TXRF, and ICP-MS methods. Intercomparison study and accuracy assessment

Чубаров

Pashkova

Panteeva

et al. 2021

Applied Radiation and Isotopes

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Total-reflection X-ray fluorescence spectrometry as a tool for the direct elemental analysis of ores: Application to iron, manganese, ferromanganese, nickel-copper sulfide ores and ferromanganese nodules

Cited by 23 publications

References 23 publications

Application of Total-Reflection X-Ray Fluorescence Spectrometry (Txrf) to Geological Objects: Experience of the TXRF Laboratory, Center for Geodynamics and Geochronology

Application of Total-Reflection X-Ray Fluorescence Spectrometry (Txrf) to Geological Objects: Experience of the TXRF Laboratory, Center for Geodynamics and Geochronology

Fuzzy Decision Support System for the Calibration of Laboratory-Scale Mill Press Parameters

Multielement analysis of continental and lacustrine ferromanganese nodules by WDXRF, TXRF, and ICP-MS methods. Intercomparison study and accuracy assessment

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