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Institute of Inorganic and Analytical Chemistry
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Publications

books and book chapters

  • T. Schirmer and U. Fittschen,
    Introduction to Geochemical and Materials Science Analysis
    2024, Springer Spektrum, Berlin, Heidelberg, DOI: 10.1007/978-3-662-67958-6

journal articles

2026

  • C. Vanhoof, A. Cross, U. E. A. Fittschen, L. Vincze:
    Atomic Spectrometry Update: Review of Advances in X-ray Fluorescence Spectrometry
    . *Journal of Analytical Atomic Spectrometry*, 2026,  DOI: 10.1039/d6ja90032a
  • F. Sand, S. Hampel, G. Pepponi, U. E. A. Fittschen:
    Film-like residue preparation by drop-on-demand picoliter printing for TXRF analysis
    . *Spectrochimica Acta Part B: Atomic Spectroscopy*, 2026, 243, 107586, DOI: 10.1016/j.sab.2026.107586
  • S. M. Tsanang, A. Moran Mendoza, A. Zgheib, M. H. Fischer, A. Wollmann, U. E. A. Fittschen, T. Schirmer, A. Schmidt:
    Flotation of Spodumene Against Quartz Using Punicines
    , *Separations*, 2026, 13, 168, DOI: 10.3390/separations13060168
  • S. Hampel, C. Lutz, G. Falkenberg, J. Kolny-Olesiak, U. E. A. Fittschen, N. Merkert:
    Understanding Vanadium Ion Diffusion in Nafion Using an Atomistic Study and Microscopic Concentration Profiles
    , *Membranes*, 2026, 16, 195, DOI: 10.3390/membranes16060195
  • F. Mähler, S. Hampel, U. E. A. Fittschen:
    Determining Diffusion Coefficients in Polymer Electrolyte Membranes Using Laboratory-Based Micro X-Ray Fluorescence Analysis: A Proof of Concept
    . X-Ray Spectrometry, 2026, 55, 465–472, DOI: 10.1002/xrs.70064
 

2025

  • C. Vanhoof, A. Cross, U. E. A. Fittschen, L. Vincze:
    Atomic Spectrometry Update: Review of Advances in X-ray Fluorescence Spectrometry
    . *Journal of Analytical Atomic Spectrometry*, 2025, 40, 2275–2289, DOI: 10.1039/D5JA90030A
  • S. Wunderlich, S. Hampel, D. Ferreira Sanchez, T. Schirmer, U. E. A. Fittschen:
    A microfocus study of basic-oxygen-furnace slag thin sections to understand the principles of vanadium incorporation
    . *Journal of Synchrotron Radiation*, 2025, 32, 4, DOI: 10.1107/S1600577525003868
  • P. C. Gillemot, A. Kretschmer, R. Grimmig, U. E. A. Fittschen, S. Witzleben:
    Assessing the combination of ion chromatography with optical emission spectrometry for trace analysis of bromine and chlorine oxyhalide species
    . *Analytica Chimica Acta*, 2025, DOI: 10.1016/j.aca.2025.344185
  • A. A. Shaltout, O. H. Abd-Elkader, P. Lassen, U. E. A. Fittschen:
    Elemental Composition of Human Gallstones by Means of X-Ray Fluorescence Spectrometry
    (TXRF), 2025, 1–15, DOI: 10.1002/xrs.3478
  • H. S. Till, A. Gross, U. E. A. Fittschen:
    Exploring the Boundaries of Double Excitation in TXRF
    , *Spectrochimica Acta Part B: Atomic Spectroscopy*, 2025, 225, 107138, DOI: 10.1016/j.sab.2025.107138

2024

  • C. S. Sandten, M. Kreyenschmidt, R. Albach, U. E. A. Fittschen:
    The Thermo-Oxidative Degradation of Open-Cell Polyurethane Soft Foam Investigated Through Gas Chromatography and Mass Spectrometry of Volatile Organic Compounds
    Polymers, 2024, 16, 3342, DOI: 10.3390/polym16233342
  • A. Zgheib, M. H. Fischer, S. M. Tsanang, I. El Hraoui, Shukang Zhang, A. Wollmann, A. P. Weber, U. E. A. Fittschen, T. Schirmer, A. Schmidt:
    The Effect of Plasma Pretreatment on the Flotation of Lithium Aluminate and Gehlenite Using Light-Switchable Collectors
    , *Separations*, 2024, 11(12), 362, DOI: 10.3390/separations11120362
  • S. Chakrabarty, D. A. De Abreu, I. A. Alhafez, O. Fabrichnaya, N. Merkert, A. Schnickmann, T. Schirmer, U. E. A. Fittschen, M. Fischlschweiger:
    Kinetics of γ-LiAlO₂ Formation from Li₂O-Al₂O₃ Melt—A Molecular Dynamics-Informed Non-Equilibrium Thermodynamic Study
    . *Solids*, 2024, 5, 561–579, DOI: 10.3390/solids5040038
  • S. Hampel, I. A. Alhafez, A. Schnickmann, S. Wunderlich, H. Li, M. Fischlschweiger, T. Schirmer, N. Merkert, U. E. A. Fittschen:
    Experimental and Simulation Studies on the Evolution of the Mn Oxidation State in a Li₂O-MnO_x-CaO-SiO₂ Slag Analog
    , *Minerals*, 2024, 14, 868, DOI: 10.3390/min14090868
  • C. Vanhoof, J. R. Bacon, U. E. A. Fittschen, L. Vincze:
    Atomic Spectrometry Update: Review of Advances in X-ray Fluorescence Spectrometry and Its Special Applications
    . *Journal of Analytical Atomic Spectrometry*, 2024, DOI: 10.1039/d4ja90034k
  • U. E. A. Fittschen, S. Hampel, T. Schirmer, N. Merkert:
    Multimodal spectroscopy and molecular dynamics simulations to understand redox chemistry and compound formation in pyrometallurgical slags: example of the manganese oxidation state with respect to lithium recycling
    *Applied Spectroscopy Reviews*, 2024, 1–18, DOI: 10.1080/05704928.2024.2350988
  • S. Hampel, I. A. Alhafez, T. Schirmer, N. Merkert, S. Wunderlich, A. Schnickmann, H. Li, M. Fischlschweiger, U. E. A. Fittschen:
    Engineering Compounds for the Recovery of Critical Elements from Slags: Melt Characteristics of Li5AlO4, LiAlO2, and LiAl5O8
    ACS Omega, 2024, 9, 24584–24592, DOI: 10.1021/acsomega.4c00723
  • A. Zgheib, M. H. Fischer, J. C. Namyslo, U. E. A. Fittschen, A. Wollmann, A. P. Weber, A. Schmidt:
    Photo-switchable Collectors for the Flotation of Lithium Aluminate for the Recycling of the Critical Raw Material Lithium
    ChemSusChem, 2024, e202301900, DOI: 10.1002/cssc.202301900
  • T. Lemmermann, M. Becker, M. Stehle, M. Drache, S. Beuermann, U. Gohs, U. E. A. Fittschen, T. Turek, U. Kunz:
    Monitoring of vanadium mass transfer using redox potential probes inside membranes during charge and discharge of flow batteries: An experimental study
    . Journal of Power Sources, 2024, 593, 233983–233991, DOI: 10.1016/j.jpowsour.2023.233983
  • A. Zgheib, S. Acker, M. H. Fischer, J. C. Namyslo, F. Strube, M. Rudolph, U. E. A. Fittschen, A. Wollmann, A. P. Weber, M. Nieger, A. Schmidt:
    Lithium aluminate flotation using pH- and light-switchable collectors based on the natural product punicine
    RSC Adv., 2024, 14, 9353–9364, DOI: 10.1039/d4ra00116h
  • T. Schirmer, J. Hiller, J. Weiss, D. Munchen, H. Lucas, U. E. A. Fittschen, B. Friedrich:
    Behavior of Tantalum in a Fe-Dominated Synthetic Fayalitic Slag System—Phase Analysis and Incorporation
    , *Minerals*, 2024, 14, 262–295, DOI: 10.3390/min14030262
  • S. Chakrabarty, H. Li, T. Schirmer, S. Hampel, U. E. A. Fittschen, M. Fischlschweiger:
    Non-equilibrium thermodynamic modeling of cooling-path-dependent phase evolution of Li₂SiO₃ from Li₂O-SiO₂ melt by considering mixed kinetic phenomena and time-dependent concentration fields
    , *Scipta Materialia*, 2024, DOI: 10.1016/j.scriptamat.2023.115922
  • S. Hampel, F. Sand, H. S. Till, U. E. A. Fittschen:
    Empirical evaluation of the TXRF detector field of view—a coffee-ring case study
    . Journal of Analytical Atomic Spectrometry, 2024, 39, 131–140,  DOI: 10.1039/D3JA00316G

2023

  • A. Schnickmann, S. Hampel, T. Schirmer, U. E. A. Fittschen:
    Formation of Lithium-Manganates in a Complex Slag System Consisting of Li₂O-MgO-Al₂O₃-SiO₂-CaO-MnO—A First Survey
    Metals, 2023, DOI: 10.3390/met13122006
  • M. Iro, D. Ingerle, S. Hampel, U. E. A. Fittschen, V. Dhamgaye, O. Fox, C. Streli:
    voxTrace: A voxel-based Monte Carlo ray-tracing code for the simulation of X-ray fluorescence spectra
    SoftwareX, 2023, 101481, DOI: 10.1016/j.softx.2023.101481
  • C. Vanhoof, J. R. Bacon, U. E. A. Fittschen, L. Vincze:
    2023 Atomic Spectrometry Update—A Review of Advances in X-ray Fluorescence Spectrometry and Its Special Applications
    . Journal of Analytical Atomic Spectrometry, 2023, DOI: 10.1039/d3ja90026f
  • S. Hampel, F. Sand, D. A. Murcia Gonzalez, G. Pepponi, G. Helsch, J. Deubener, T. Schirmer, A. Fittschen, U. E. A. Fittschen:
    Chelate-complexed multi-elemental printing performance of a small and cost-efficient picoliter droplet printing device for micro-preparation
    *Spectrochimica Acta Part B: Atomic Spectroscopy*, 2023, 206, 106716, DOI: 10.1016/j.sab.2023.106716
  • S. Acker, J. C. Namyslo, M. Rudolph, F. Strube, U. E. A. Fittschen, H. Qiu, D. Goldmann, A. Schmidt:
    Polyether-tethered imidazole-2-thiones, imidazole-2-selenones, and imidazolium salts as collectors for the flotation of lithium aluminate and spodumene
    RSC Advances, 2023, 13, 6593, DOI: 10.1039/D2RA07627F
  • A. A. Shaltout, O. H. Abd-Elkader, P. Lassen, U. E. A. Fittschen:
    Elemental and statistical analysis of small individual urinary stones using TXRF spectrometry
    X-Ray Spectrometry, 2023, 1–14, DOI: 10.1002/xrs.3331

2022

  • F. Endres, A. Prowald, U. E. A. Fittschen, S. Hampel, S. Oppermann, F. Jacob, M. Hutzler, A. Laus, Y. Methner, M. Zarnkow:
    Constant-temperature mashing at 72 °C for the production of beers with reduced alcohol content in microbrewing systems
    . *European Food Research and Technology*, 2022, 248, 1457–1468, DOI: 10.1007/s00217-022-03968-2
  • T. Lemmermann, M. Becker, M. Stehle, M. Drache, S. Beuermann, M. S. Bogar, U. Gohs, U. E. A. Fittschen, T. Turek, U. Kunz:
    In situ and in operando detection of redox reactions with integrated potential probes during vanadium transport in ion exchange membranes
    Journal of Power Sources, 2022, 553, 231343, DOI: 10.1016/j.jpowsour.2022.231343
  • C. Vanhoof, J. R. Bacon, U. E. A. Fittschen, L. Vincze:
    Atomic spectrometry update: review of advances in X-ray fluorescence spectrometry and its special applications
    Journal of Analytical Atomic Spectrometry, 2022, DOI: 10.1039/D2JA90035A

2021

  • A. Kulow, A. Guilherme Buzanich, U. Reinholz, F. Emmerling, S. Hampel, U. E. A. Fittschen, C. Streli, M. Radtke:
    Reconstruction for Coded Aperture Full-Field X-Ray Fluorescence Imaging
    . Advances in X-ray Analysis: Proceedings of the Denver X-ray Conference, Vol. 65, International Centre for Diffraction Data, Pennsylvania, 2021, DOI: 10.1039/C9JA00232D
  • S. Wunderlich, T. Schirmer, U. E. A. Fittschen:
    Investigation of Vanadium Chemistry in Basic-Oxygen-Furnace (BOF) Slags—A First Approach
    , *Metals*, 2021, 11(11), 1869, DOI: 10.3390/met11111869
  • C. Lutz, S. Hampel, S. Beuermann, T. Turek, U. Kunz, J. Garrevoet, G. Falkenberg, and U. E. A. Fittschen:
    Determination of the through-plane profile of vanadium species in hydrated Nafion studied using micro X-ray absorption near-edge structure spectroscopy—proof of concept
    . Journal of Synchrotron Radiation, 2021, 28, 1865 DOI: 10.1107/S160057752100905X
  • C. Vanhoof, J. R. Bacon, U. E. A. Fittschen, L. Vincze:
    Atomic spectrometry update – a review of advances in X-ray fluorescence spectrometry and its special applications
    Journal of Analytical Atomic Spectrometry, 2021, 36, 1797–1812, DOI: 10.1039/D1JA90033A
  • C. Lutz, M. Breuckmann, S. Hampel, M. Kreyenschmidt, X. Ke, S. Beuermann, K. Schafner, T. Turek, U. Kunz, A.G. Buzanich, M. Radtke, U.E.A. Fittschen:
    Characterization of Dimeric Vanadium Uptake and Species in Nafion™ and Novel Membranes from Vanadium Redox Flow Battery Electrolytes.
    Membranes, 2021, 11, 576, DOI: 10.3390/membranes11080576
  • A. Wittkowski, T. Schirmer, H. Qiu, D. Goldmann, U. E. A. Fittschen:
    Speciation of Manganese in a Synthetic Recycling Slag Relevant for Lithium Recycling from Lithium-Ion Batteries.
    Metals, 2021, 11, 188, DOI: 10.3390/met11020188
  • C. Lutz, S. Hampel, X. Ke, S. Beuermann, T. Turek, U. Kunz, A. Guilherme Buzanich, M. Radtke, U. E. A. Fittschen:
    Evidence for redox reactions during vanadium crossover inside the nanoscopic water-body of Nafion 117 using X-ray absorption near-edge structure spectroscopy.
    Journal of Power Sources, 2021, 483, 229176, DOI: 10.1016/j.jpowsour.2020.229176

2020

  • I. Kula, C. Gutsche, Y. Erdoğan, A. Fittschen, U. E. A. Fittschen:
    A Road Map for Assessing the Content of Critical Materials in Boron Industrial Wastes Using Sustainable Micro-X-ray Fluorescence and Total Reflection X-ray Fluorescence Instrumentation
    . Turkish Journal of Chemistry,  (2020), 44 (20), 1244–1253, DOI: 10.3906/kim-2003-33
  • C. Leppin, S. Hampel, F. S. Meyer, A. Langhoff, U. E. A. Fittschen, D. Johannsmann:
    A Quartz Crystal Microbalance That Tracks Four Overtones in Parallel with a Time Resolution of 10 Milliseconds: Application to Inkjet Printing.
    Sensors (2020), 20 (20), 5915, DOI: 10.3390/s20205915
  • C. Vanhoof, J. R. Bacon, U. E. A. Fittschen, L. Vincze:
    2020 Atomic Spectrometry Update—A Review of Advances in X-ray Fluorescence Spectrometry and Its Special Applications.
    Journal of Analytical Atomic Spectrometry (2020) 35(9), 1704–1719, DOI: 10.1039/D0JA90051F
  • S. Böttger, J. Kolny-Olesiak, U. E. A. Fittschen:
    A Comparison of Different Nanoscopic Silver Species with Respect to Their Capacity to Bind Mercury from the Gas Phase Using Total Reflection X-ray Fluorescence.
    Spectrochimica Acta Part B: Atomic Spectroscopy (2020), 170, 105903, DOI: 10.1016/j.sab.2020.105903
  • A. Kulow, A. G. Buzanich, U. Reinholz, F. Emmerling, S. Hampel, U. E. A. Fittschen, C. Streli, M. Radtke:
    Comparison of three reconstruction methods based on deconvolution, an iterative algorithm, and a neural network for X-ray fluorescence spectroscopy with coded apertures.
    Journal of Analytical Atomic Spectrometry (2020), 35, 1423–1434, DOI: 10.1039/D0JA00146E
  • C. Lutz, U. E. A. Fittschen:
    Laboratory XANES to study vanadium species in vanadium redox flow batteries.
    Powder Diffraction (2020) 1–5, DOI: 10.1017/S0885715620000226
  • J. Hiller, U.E.A. Fittschen:
    Comparison of different sample preparation techniques for the determination of Pb in a certified ryegrass sample using Total Reflection X-ray Fluorescence Spectrometry (TXRF).
    Advances in X-ray Analysis: Proceedings of the Denver X-ray Conference, Vol. 64, International Centre for Diffraction Data, Pennsylvania, 2020.
  • C. Lutz, S. Hampel, S. Beuermann, T. Turek, U. Kunz, A. Guilherme Buzanich, M. Radtke, U.E.A. Fittschen:
    Investigation of Vanadium Species Distribution in Nafion™ 117 after Cyclization in a Vanadium Redox Flow Battery.
    Advances in X-ray Analysis: Proceedings of the Denver X-ray Conference, Vol. 64, International Centre for Diffraction Data, Pennsylvania, 2020.

2019

  • C. Vanhoof, J. R. Bacon, A. T. Ellis, U. E. A. Fittschen, L. Vincze:
    2019 Atomic Spectrometry Update—A Review of Advances in X-Ray Fluorescence Spectrometry and Its Special Applications.
    Journal of Analytical Atomic Spectrometry (2019) 34, 1750–1767, DOI: 10.1039/C9JA90042J
  • U. E. A. Fittschen, R. Möckel, M. Schreiner, M. Klinger, M. Radtke, B. Meyer, S. Guhl, A. Renno, J. Godinho, R. Gloaguen, J. Gutzmer:
    Bundling Analytical Capacities to Understand Phase Formation in the Recycling of Functional Materials.
    Materials Science Forum (2019) 959, 183–190, DOI: 10.4028/www.scientific.net/MSF.959.183
  • A. J. Erdt, C. Gutsche, U. E. A. Fittschen, H. Borchert, J. Parisi, J. Kolny-Olesiak:
    Control of crystallographic phases and surface characterization of intermetallic platinum-tin nanoparticles.
    CrystEngComm (2019) 21, 3363–3373, DOI: 10.1039/C9CE00356H
  • C. Lutz, U. E. A. Fittschen:
    Development of new procedures for elemental determination and speciation in vanadium redox flow batteries.
    Proceedings of the 3rd Lower Saxony Symposium on Materials Engineering (2019), ISBN: 978-3-8440-6471-1, DOI: 10.21268/20190312-0

2018

  • S. Böttger, I. M. B. Tyssebotn, W. Jansen, U. E. A. Fittschen:
    Evaluation of internal standards for the determination of gas-phase mercury using silver nanoparticle-assisted total reflection X-ray fluorescence.
    Spectrochimica Acta Part B: Atomic Spectroscopy (2018) 147, 93–99, DOI: 10.1016/j.sab.2018.05.013
  • I. M. B. Tyssebotn, A. Fittschen, U. E. A. Fittschen:
    CE-XRF – Initial steps toward a non-invasive, element-sensitive detector for liquid separations.
    Electrophoresis (2018) 39(5–6), 816–823, DOI: 10.1002/elps.201700348

2017

  • U. E. A. Fittschen, H.-H. Kunz, R. Höhner, A. Fittschen:
    A new micro X-ray fluorescence spectrometer for in vivo elemental analysis in plants.
    X-Ray Spectrometry (2017) 46(5), 374–381, DOI: 10.1002/xrs.2783

2016

  • R. Höhner, S. Tabatabaei, H.-H. Kunz, U. E. A. Fittschen:
    A rapid total reflection X-ray fluorescence protocol for microanalyses of ion profiles in Arabidopsis thaliana. 
    Spectrochimica Acta Part B: Atomic Spectroscopy (2016) 125, 159–167, DOI: 10.1016/j.sab.2016.09.013
  • U. E. A. Fittschen, A. Guilherme, S. Böttger, D. Rosenberg, M. Menzel, W. Jansen, M. Busker, Z. P. Gotlib, M. Radtke, H. Riesemeier, P. Wobrauschek, C. Streli:
    A setup for synchrotron-radiation-induced total reflection X-ray fluorescence and X-ray absorption near-edge structure recently commissioned at the BESSY II BAMline.
    Journal of Synchrotron Radiation, (2016) 23, 820–824, DOI: 10.1107/S1600577516001995
  • R. Dalipi, L. Borgese, A. Casaroli, M. Boniardi, U. E. A. Fittschen, K. Tsuji, L.E. Depero:
    Study of metal release from stainless steels in simulated food contact using total reflection X-ray fluorescence.
    Journal of Food Engineering, (2016) 173, 85–91, DOI: 10.1016/j.jfoodeng.2015.10.045

2015

  • M. Menzel, O. Scharf, S. H. Nowak, M. Radtke, U. Reinholz, P. Hischenhuber, G. Buzanich, A. Meyer, V. Lopez, K. G. McIntosh, C. Streli, G. Havrilla, U. E. A. Fittschen:
    Shading in TXRF: Calculations and experimental validation using a color X-ray camera.
    Journal of Analytical Atomic Spectrometry (2015) 30, 2184–2193, DOI: 10.1039/C5JA00127G
  • U. Boesenberg, U. E. A. Fittschen:
    “2D and 3D imaging of Li-ion battery materials using synchrotron radiation” in “Rechargeable Batteries.”
    Green Energy and Technology, edited by Z. Zhang and S. S. Zhang,  Springer International Publishing, Switzerland, 393–418 (2015), DOI: 10.1007/978-3-319-15458-9_14
  • U. Boesenberg, M. Falk, C. G. Ryan, R. Kirkham, M. Menzel, J. Janek, M. Fröba, G. Falkenberg, U. E. A. Fittschen:
    Correlation between chemical and morphological heterogeneities in LiNi₀.₅Mn₁.₅O₄ spinel composite electrodes (LNMO) for lithium-ion batteries determined by micro-X-ray fluorescence analysis.
    Chemistry of Materials, (2015) 27, 2525–2531, DOI: 10.1021/acs.chemmater.5b00119
  • U. E. A. Fittschen, O. Scharf, M. Menzel,
    “Full-Field X-ray Fluorescence Microscopy Using a Color X-ray Camera.”
     Microscopy Today (May 2015) 23(3):36, DOI: 10.1017/S155192951500022X

2014

  • I. De La Calle, M. Quade, T. Krugmann, U. E. A. Fittschen:
    Determination of residual metal concentration in metallurgical slag after acid extraction using total reflection X-ray fluorescence spectrometry.
    X-Ray Spectrometry (2014) 43(6), 345–352, DOI: 10.1002/xrs.2561
  • U. E. A. Fittschen, M. Menzel, O. Scharf, M. Radtke, U. Reinholz, G. Buzanich, V. M. Lopez, K. McIntosh, C. Streli, G. J. Havrilla:
    Observation of X-ray shadings in synchrotron radiation-total reflection X-ray fluorescence using a color X-ray camera.
    Spectrochimica Acta Part B: Atomic Spectroscopy (2014) 99, 179–184, DOI: 10.1016/j.sab.2014.06.025
  • M. Menzel, U. E. A. Fittschen:
    TXRF analysis of airborne silver nanoparticles from fabrics.
    Analytical Chemistry, (2014) 86 (6), 3053, DOI: 10.1021/ac404017u
  • M. Meyns, F. Iacono, C. Palencia, J. Geweke, M. D. Coderch, U. E. A. Fittschen, J. M. Gallego, R. Otero, B. H. Juárez, C. Klinke:
    Shape Evolution of CdSe Nanoparticles Controlled by Halogen Compounds.
    Chemistry of Materials, (2014) 26, 1813–1821, DOI: 10.1021/cm4037082