Chemical effects on the satellite lines of sulfur Kβ X-ray emission spectra

Deluigi, M. Torres; Riveros, José A.

doi:10.1016/j.chemphys.2006.01.022

Cited by 23 publications

(27 citation statements)

References 17 publications

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Section: Resultssupporting

confidence: 90%

“…The fluorescence energies as presented in Table are in good agreement with previously published data from the last 90 years (Figure ). All mean values with the only exception of S Kβ 1 for sulfite (Table ) are within the confidence intervals calculated from the previously published data . For a better comparability of respective fluorescence energies and the possible impact of the historic development of XRF instrumentation, this big amount of 38 data sets was categorised to four time periods: 1920–1949, 1950–1979, 1980–1999 and 2000–2016.…”

Section: Resultssupporting

confidence: 90%

“…Energies of X‐ray fluorescence lines for sulfur in different oxidation states: A comparison of values from this work (mean value ± range of dispersion) and previously published data…”

Section: Resultsmentioning

confidence: 89%

“…All mean values with the only exception of S Kβ 1 for sulfite (Table 3) are within the confidence intervals calculated from the previously published data. For a better comparability of respective fluorescence energies and the possible impact of the historic development of XRF instrumentation, this big amount of 38 data sets was categorised to four time periods: 1920-1949 [7][8][9][10][11][12][13][14][15] , 1950-1979 [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] , 1980-1999 [33][34][35][36][37] and 2000-2016 [6,[38][39][40][41][42][43] . Comparing used instrumentation (see Table S6 for further detailed information) showed that FIGURE 2 Energies of X-ray fluorescence lines for sulfur in different oxidation states: A comparison of values from this work (mean value ± range of dispersion) and previously published data Fluorescence energy (S Kα 1,2 and S Kβ 1 ) and S Kβ′/S Kβ 1 ratio of peak height versus elemental sulfur mass fraction that the main difference between historical and modern devices is their availability.…”

Section: Individual Sulfur Speciesmentioning

confidence: 99%

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Distinction and quantification of inorganic sulfur species including thiosulfate by X‐ray fluorescence (WD‐XRF)

Hennings

Pleßow

2018

X-Ray Spectrometry

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Sulfur occurs in a variety of inorganic and organic compounds with oxidation states from −II up to +VI. Differentiation of these species in solid geochemical samples can be challenging because of oxidation processes during sample preparation by acidic digestion. Applying pressed powder pellets and an analysis by wavelength‐dispersive X‐ray fluorescence minimises reactions with oxidants and water. Main subjects of this work were five inorganic sulfur species, sulfide −II, elemental sulfur 0, thiosulfate +II, sulfite +IV, and sulfate +VI, and the determination of their fluorescence energies in the sulfur X‐ray spectra. S Kα1,2 and S Kβ1 can be observed for all species, S Kβ′ satellites only for species with coordinated oxygen. The results are in good agreement with previously published data. Yet none of the 38 investigated papers from the past 90 years reported S Kα1,2 of thiosulfate, which was determined as E = 2,309.12 eV in this work apparently for the first time. Binary mixtures of sulfur species are strongly differing in their ability of being quantitatively differentiated, as a reliable quantification requires a sufficient difference of the respective fluorescence energies. Regression equations for each mixture can be used to calculate the ratio of mass fractions of the investigated species from the evaluated fluorescence energy. If boundary conditions are considered, the presented approaches can be applied for analyses of geochemical samples or quality control of technical products. The main advantage of the described methods is the option of implementation to everyday X‐ray fluorescence lab routine without substantial additional effort.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 90%

“…Energies of X‐ray fluorescence lines for sulfur in different oxidation states: A comparison of values from this work (mean value ± range of dispersion) and previously published data…”

Section: Resultsmentioning

confidence: 89%

Section: Individual Sulfur Speciesmentioning

confidence: 99%

See 2 more Smart Citations

Distinction and quantification of inorganic sulfur species including thiosulfate by X‐ray fluorescence (WD‐XRF)

Hennings

Pleßow

2018

X-Ray Spectrometry

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“…The intensity ratio of Kβ'/Kβ 1,3 varies depending on the binding form of S and can be used for speciation analysis [31][32][33][34]. At the Kα-line a small energy shift in dependence of the binding form can be observed when spectrometers with an extremely good angle resolution are used [35].…”

Section: Xrf-analysismentioning

confidence: 99%

Studies on the influence of H 2 S and SO 2 on the activity of a PdO/Al 2 O 3 catalyst for removal of oxygen by total oxidation of (bio-)methane at very low O 2 :CH 4 ratios

Ortloff

Bohnau

Kramar

et al. 2016

Applied Catalysis B: Environmental

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This work focuses on the deactivation and in-situ regeneration effects of a commercial PdO/Al 2 O 3 catalyst for removal of oxygen by oxidation of CH 4 at low O 2 :CH 4 ratios when hydrogen sulfide and sulfur dioxide are applied. The experimental work is carried out at an operating temperature range of 200 °C < T < 300 °C, atmospheric pressures and H 2 S contents of < 50 ppmv. SO 2 and H 2 S show a different behavior in the examined range of operating conditions. Due to the low operating temperatures and low oxygen contents applied in this work, it was possible to identify an intermediate species, presumably PdSO 3 , with an increased activity for the oxidation of methane. This stands in contrast to the literature, where SO 2 typically causes catalyst deactivation. Based on the experimental results, a reaction scheme was derived and kinetic measurements for each of the participating reactions were carried out separately.

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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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Chemical effects on the satellite lines of sulfur Kβ X-ray emission spectra

Cited by 23 publications

References 17 publications

Distinction and quantification of inorganic sulfur species including thiosulfate by X‐ray fluorescence (WD‐XRF)

Distinction and quantification of inorganic sulfur species including thiosulfate by X‐ray fluorescence (WD‐XRF)

Studies on the influence of H 2 S and SO 2 on the activity of a PdO/Al 2 O 3 catalyst for removal of oxygen by total oxidation of (bio-)methane at very low O 2 :CH 4 ratios

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

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