A von Hamos spectrometer for in situ sulfur speciation by non-resonant sulfur Kα emission spectroscopy. Issue 10 (28th August 2019)

• Record Type: Journal Article
• Authors: Kuzmenko, Dzulija; Vogelsang, Urs; Hitz, Stephan; Müller, David; Clark, Adam H.; Kinschel, Dominik; Czapla-Masztafiak, Joanna; Milne, Christopher; Szlachetko, Jakub; Nachtegaal, Maarten
• Is Part Of: Journal of analytical atomic spectrometry. Volume 34:Issue 10(2019)
• Page Start: 2105
• Page End: 2111
• Publication Date: 2019-08-28
• Subjects: Atomic spectra -- Periodicals; Atomic absorption spectroscopy -- Periodicals; 543.0858
• DOI: 10.1039/c9ja00195f
• Languages: English
• ISSNs: 0267-9477

Abstract

Abstract : A von Hamos geometry based wavelength dispersive spectrometer combined with an in situ reactor cell has been developed to measure non-resonant sulfur Kα emission for the in situ speciation of low concentrations of sulfur. Abstract : A von Hamos geometry based wavelength dispersive spectrometer combined with an in situ reactor cell has been developed to measure non-resonant sulfur Kα emission for the in situ speciation of low concentrations of sulfur. The spectrometer operates at 15 cm focusing radius, is equipped with a curved Si(111) crystal and a position sensitive detector, and is capable of achieving an energy resolution of 0.56 eV at 2.3 keV. We present the details of the spectrometer and dedicated sample-cell design to study chemical reactions in situ . The spectrometer capabilities are exemplified by an in situ study of sulfur speciation during H2 S poisoning of SiO2 supported Ru nanoparticles performing CO methanation.