Photometrische und titrimetrische Bestimmung von Schwefelverbindungen nebeneinander in wäßriger Lösung

Blasius, E.; Ziegler, Kurt

doi:10.1002/srin.197302463

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…Element speciation with respect to oxidation states requires either an appropriate preceding separation technique or measurement of specific atomic properties significantly affected by the nature of bonding partners . As the impact of chemical bonding on inner shell electron transition energies is generally marginal, X‐ray fluorescence (XRF) wavelengths are not perceivably depending on the respective element's compounds present in the sample.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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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show abstract

“…Classical analyses for sulfite or sulfate are numerous and varied, and include: titrimetric (7,8), spectroscopic (9)(10)(11), voltammetric (12)(13)(14), and flame (15,16) methods. In general, such procedures are restricted to solutions which contain only one species, although complex analytical schemes have been developed for the determination of mixtures of these oxyanions in solution (17)(18)(19).…”

mentioning

confidence: 99%

Determination of sulfite and sulfate in solids by time-resolved molecular emission spectrometry

Schubert¹,

Clayton²,

Fernaǹdo³

1979

Anal. Chem.

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Determination of polysulphides in blood by gas chromatography and gas chromatography—mass spectrometry

Kage¹,

Nagata²,

Kudo³

1991

Journal of Chromatography B: Biomedical Sciences and Applicatio

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Photometrische und titrimetrische Bestimmung von Schwefelverbindungen nebeneinander in wäßriger Lösung

Cited by 3 publications

References 7 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)

Determination of sulfite and sulfate in solids by time-resolved molecular emission spectrometry

Determination of polysulphides in blood by gas chromatography and gas chromatography—mass spectrometry

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