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Kalinin, B. D.; Plotnikov, R. I.; Kostikov, Yu. P.

doi:10.1023/a:1014896812245

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…The influence of the chemical bond results in the chemical shift of the SKα 1,2 peak (1–2 eV) and in intensity of satellite SKα 3,4 . To clearly recognize the differences in intensities, the approach earlier described and successfully employed for manganese and iron spectra has been applied. The relative spectra were constructed by normalizing obtained spectra per intensity maximum of reference sulfur‐rich sample (elemental sulfur) spectrum.…”

Section: Methodsmentioning

confidence: 99%

X‐ray fluorescence determination of sulfur chemical state in sulfide ores

2016

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This paper describes the X-ray fluorescence technique for estimation of the ratio between sulfide and total sulfur in sulfide ores using the influence of sulfur chemical state on positions and intensities of lines (SKα 1,2 , SKβ 1,3 ) and satellites (SKβ′, SKα 3,4 ) of the sulfur X-ray emission spectra measured by the wavelength-dispersive X-ray fluorescence spectrometer. The samples to be analyzed were prepared as pressed powder pellets on boric acid substrate. The SKα 1,2 line chemical shift is the most appropriate parameter for sulfur chemical state estimation because spectral lines in this field are intensive and are almost not affected by spectral overlap of lead spectrum lines. The ratios of line intensities were also used as analytical parameters. Forty-one samples of sulfide ores collected in the Russian Far East and Southern Ural deposits have been analyzed. The results of estimation of sulfur chemical state by gravimetric and proposed X-ray fluorescence techniques agree fairly well.

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Section: Methodsmentioning

confidence: 99%

X‐ray fluorescence determination of sulfur chemical state in sulfide ores

2016

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“…Besides, as the literature data point out, the studied area of spectrum contains MnK β ″ and MnK β x satellites, which are not resolved under selected conditions of measurement. The paper describes the approach, which allows the differences in intensities be recognized via constructing the difference spectra by normalizing spectra of studied samples per maximum of spectrum intensity of the Mn‐rich sample (MnO) and the subsequent subtracting of spectrum intensities of MnO sample from each sample spectral intensity [Fig. (b)].…”

Section: Methodsmentioning

confidence: 99%

X-ray fluorescence determination of the manganese valence state and speciation in manganese ores

et al. 2015

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a This work concerns determination of the manganese valence state and speciation by wavelength-dispersive X-ray fluorescence analysis. The authors investigated the effect of the manganese valence state and speciation on the intensity of some К-series lines of the X-ray emission spectrum for the samples of manganese compounds. The intensities of MnKβ 5 line and MnKβ′ satellite are least influenced by speciation, and they may be used for evaluating the manganese valence state for the samples containing low iron. The intensities of MnKβ″ and MnKβ x satellites may be employed for assessing the manganese speciation. The results of X-ray fluorescence determination of the manganese valence state and speciation in the manganese ores of the South Ural deposits agree with the X-ray diffraction data. The X-ray fluorescence method is definitely advantageous, because it does not require a complicated process of sample preparation and allows to receive fast information on the manganese valence state and speciation with the purpose to assess the quality of manganese ores.

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“…A wide range of samples was studied in [20]. The measurement was performed using the scattering spectra of standard one-component samples of beryllium, boron, and carbon, as well as multicomponent standards of stoichiometric compositions based on H, Li, B, C, O, and F. Materials in different structural states were used for the experiment: from liquid (H2O and C2H6O) to coarse-grained polycrystals (LiF).…”

Section: Study Of Multicomponent Materialsmentioning

confidence: 99%

“…Control of the distribution of light parts over the depth of the standard is considered in [21]. The idea of improving the research method described in [20] is to change the thickness of the information layer and experimentally obtain the dependence of the impurity concentration on this thickness.…”

Section: Study Of Multicomponent Materialsmentioning

confidence: 99%

Application of the Compton Effect to Solve Problems of Condensed Matter Physics

Mikhailov¹,

Baturin²,

Mikhailov³

et al. 2022

J. Nano- Electron. Phys.

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The prospects for the application of X-ray spectral methods and scattering phenomena as a basis for chemical and phase analysis in new areas are considered. It is theoretically shown that the sensitivity of the scattering method does not depend on the structure and quality of the sample surface and increases sharply with a decrease in the atomic number of the analyzed impurity. The sensitivity of the method is analyzed in the study of multicomponent standards of stoichiometric composition based on H, Li, B, C, O and F, and compared with the sensitivity of traditional analytical methods. The concentration sensitivity of detecting the content of light impurities in metals is calculated and experimental confirmation is given for titanium-hydrogen and iron-carbon systems. For the first time, the Compton method is generalized for the analysis of multicomponent systems of unknown composition. To do this, using the Duvauchelle approach, the concept of the effective atomic number by the scattering property is introduced. It is shown that the dependence of the effective atomic number on the parameter x, which reflects the measurement conditions (scattering angle and primary radiation wavelength), uniquely determines a multicomponent compound. Based on the sensitivity analysis, the range of application of the scattering method is substantiated. From the side of small values of the parameter x, the method is limited due to Bragg reflections superimposed on the Rayleigh peak. For large values of the parameter x, the sensitivity of the method decreases due to the large discrepancy between the intensities of coherent and incoherent scattering. The examples of solving analytical problems are given, in which the use of X-ray fluorescence and diffraction analysis is either very difficult or impossible at all.

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Untitled

Cited by 3 publications

References 3 publications

X‐ray fluorescence determination of sulfur chemical state in sulfide ores

X‐ray fluorescence determination of sulfur chemical state in sulfide ores

X-ray fluorescence determination of the manganese valence state and speciation in manganese ores

Application of the Compton Effect to Solve Problems of Condensed Matter Physics

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