�ber die Struktur des R�ntgen-K ?-Spektrums von Schwefel

Faessler, A.; Schmid, E. D.

doi:10.1007/bf01365535

Cited by 34 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%

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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%

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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“…In contrast, the behaviour of the S K β spectrum is more complex. Besides pronounced changes in the line shape, different satellite reflections of the S K β line are observed as a function of the valence state of sulfur [4,6,7,8,9]. The intensity ratio of the K β satellite reflections has been used to quantify the sulfate fraction of total sulfur in bulk aerosol samples [10].…”

Section: Introductionmentioning

confidence: 99%

Speciation of sulfur in individual aerosol particles from work places by wavelength-dispersive electron-probe microanalysis

Höflich

Weinbruch

Ortner

2004

Analytical and Bioanalytical Chemistry

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The oxidation state of sulfur has been determined by measuring the energy shift of the S K(alpha) line by wavelength-dispersive electron-probe microanalysis. On flat polished samples the energy shift between sulfate (S(+6)) and sulfide (S(-2)) was 1.3 eV, in good agreement with previous literature data. The observed energy shift of the S K(alpha) line is dominated by the change of the valence state of sulfur--the effects of co-ordination geometry and nearest neighbours are small. The relationship between the energy shift of the S K(alpha) line and the oxidation number of sulfur is linear, to a first approximation. The effect of particle geometry on the position of the S K(alpha) line is usually small and introduces an error of approximately half an oxidation number. The apparent sulfur valence states observed for individual aerosol particles from work places in a nickel refinery are highly variable and most probably result from different mixtures of the two end-members sulfide and sulfate.

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“…Fur das S KP-Emissionsspektrum fanden Faessler und Schmid [119] in Sulfiden breite Banden, in Sulfaten dagegen scharfe Linien ; primar und sekundiir angeregte Substanzen ergaben unterschiedliche Spektren. Valasek [398] veroffentlichte die Wellenllingen der Hauptlinien und Satelliten der K-Serie nach Mischanregung mit einer Belichtungszeit bis zu 600 Stunden und ermittelte u. a. die Energiedifferenzen zwiachen KP,-Linie und K-Absorptionskante.…”

Section: Schwefelunclassified

Der Einfluß der chemischen Bindung auf die Röntgenemissions‐ und ‐absorptionsspektren

Meisel

1965

Physica Status Solidi (b)

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�ber die Struktur des R�ntgen-K ?-Spektrums von Schwefel

Cited by 34 publications

References 0 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)

Speciation of sulfur in individual aerosol particles from work places by wavelength-dispersive electron-probe microanalysis

Der Einfluß der chemischen Bindung auf die Röntgenemissions‐ und ‐absorptionsspektren

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