ACFC/Institute/Members

Dipl.-Ing. Dr.techn. Helmar Wiltsche

Groupleader of Element Alanysis Phone:                +43 (316) 873 - 32505
EMail:                 helmar.wiltschenoSpam@tugraz.at
Topics:               Element Analysis

Articles in peer reviewed journals

2024
Andreas Russegger, Susanne M. Fischer, Angela C. Debruyne, Helmar Wiltsche, A. Daniel Boese, Ruslan I. Dmitriev and Sergey M. Borisov Tunable Self-Referenced Molecular Thermometers via Manipulation of Dual Emission in Platinum(II) Pyridinedipyrrolide Complexes ACS Applied Materials and Interfaces 16, 11930-11943, 2024
2023
Tobias Burger, Miriam Velasquez Hernandez, Carlos Carbonell Fernandez, Johannes Rattenberger, Helmar Wiltsche, Paolo Falcaro, Christian Slugovc and Sergey Borisov Luminescent Porphyrinic Metal-Organic Frameworks for Oxygen Sensing: Correlation of Nanostructure and Sensitivity ACS Applied Nano Materials 6, 248-260, 2023
Franz Hubert Hallwirth, Matthias Wolfgang and Helmar Wiltsche Matrix effects in simultaneous microwave induced plasma optical emission spectrometry Journal of Analytical Atomic Spectrometry 38, 1682 - 1690, 2023
Miriam de J. Velásquez-Hernández, Mercedes Linares-Moreau, Lea A. Brandner, Benedetta Marmiroli, Mariano Barella, Guillermo P. Acuna, Simone Dal Zilio, Margot F.K. Verstreken, Dmitry E. Kravchenko, Oliver M. Linder-Patton, Jack D. Evans, Helmar Wiltsche, Francesco Carraro, Heimo Wolinski, Rob Ameloot, Christian Doonan and Paolo Falcaro Fabrication of 3D Oriented MOF Micropatterns with Anisotropic Fluorescent Properties Advanced Materials 35, 2023
Franz Hubert Hallwirth, Herbert Motter and Helmar Wiltsche An improved digestion coil arrangement for high-pressure microwave-assisted flow digestion Journal of Analytical Atomic Spectrometry 38, 2378 - 2386, 2023
2022
Helmar Wiltsche, Matthias Wolfgang and Franz Hubert Hallwirth Effects of argon on the analytical properties of a microwave-sustained, inductively coupled, atmospheric-pressure plasma Journal of Analytical Atomic Spectrometry 37, 1298-1308, 2022
Sebastian Rohde, Helmar Wiltsche, Aidan Cowley and Bernhard Gollas Dissolution and electrolysis of lunar regolith in ionic liquids Planetary and Space Science 219, 2022
Patrick Petschacher, Reza Ghanbari, Carina Sampl, Helmar Wiltsche, Roland Kádár, Stefan Spirk and Tiina Nypelö Dynamic and Static Assembly of Sulfated Cellulose Nanocrystals with Alkali Metal Counter Cations Nanomaterials 12, 2022
2020
Helmar Wiltsche and Matthias Wolfgang Merits of microwave plasmas for optical emission spectrometry – characterization of an axially viewed microwave-sustained, inductively coupled, atmospheric-pressure plasma (MICAP) Journal of Analytical Atomic Spectrometry 35, 2369-2377, 2020
Stefan Spirk, Michael Weißl, Mike Pelzmann, Armin Zankel, Brigitte Bitschnau, Helmar Wiltsche and Gregor Trimmel Processing of metal sulfide cellulose nanocomposite fibers in core shell configuration Lenzinger Berichte 95, 39-48, 2020
Miriam De J. Velásquez-Hernández, Efwita Astria, Sarah Winkler, Weibin Liang, Helmar Wiltsche, Arpita Poddar, Ravi Shukla, Glenn Prestwich, John Paderi, Pablo Salcedo-Abraira, Heinz Amenitsch, Patricia Horcajada, Christian J. Doonan and Paolo Falcaro Modulation of metal-azolate frameworks for the tunable release of encapsulated glycosaminoglycans Chemical Science 11, 10835-10843, 2020
2019
Miriam De J. Velásquez-Hernández, Raffaele Ricco, Francesco Carraro, F. Ted Limpoco, Mercedes Linares-Moreau, Erich Leitner, Helmar Wiltsche, Johannes Rattenberger, Hartmuth Schröttner, Philipp Frühwirt, Eduard M. Stadler, Georg Gescheidt, Heinz Amenitsch, Christian J. Doonan and Paolo Falcaro Degradation of ZIF-8 in phosphate buffered saline media CrystEngComm 21, 4538-4544, 2019
2017
Flavia Dalla Nora, Sandra M. Cruz Cruz, Cristiano K. Giesbrecht, Günter Knapp, Helmar Wiltsche, Cezar A. Bizzi, Juliano S. Barin and Erico M. M. Flores A new approach for the digestion of diesel oil by microwave-induced combustion and determination of inorganic impurities by ICP-MS Journal of Analytical Atomic Spectrometry 32, 408-414, 2017
Brigitte Wendl, Helmar Wiltsche, Ernst Lankmayr, H Winsauer, A Muchitsch, N Jakse, M Wendl, T Wendl and A. Walter Metal release profiles of orthodontic bands, brackets, and wires: an in vitro study Journal of Orofacial Orthopedics 78, 494–503 , 2017
Thiago L. Marques, Helmar Wiltsche, Joaquim A. Nóbrega, Monika Winkler and Günter Knapp Performance evaluation of a high-pressure microwave-assisted flow digestion system for juice and milk sample preparation Analytical and Bioanalytical Chemistry 409, 4449-4458, 2017
2016
Paul Tirk, Matthias Wolfgang and Helmar Wiltsche Reduction of argon consumption to < 2 L min-1 by gas recycling in inductively coupled plasma – optical emission spectrometry Analytical Chemistry 88, 7352–7357, 2016
Femke Vertregt, Guzman Torrelo, Sarah Trunk, Helmar Wiltsche, Wilfred R Hagen, Ulf Hanefeld and Kerstin Steiner EPR Study of Substrate Binding to Mn(II) in Hydroxynitrile Lyase from Granulicella tundricola ACS Catalysis 6, 5081–5085, 2016
Sepideh Mostofi, Ehsan Bonyadi Rad, Helmar Wiltsche, Ulrike Fasching, Gabor Szakacs, Claudia Ramskogler, Sriveena Srinivasaiah, Muammer Ueçal, Regine Willumeit, Annelie-Martina Weinberg and Ute Schaefer Effects of Corroded and Non-Corroded Biodegradable Mg and Mg Alloys on Viability, Morphology and Differentiation of MC3T3-E1 Cells Elicited by Direct Cell/Material Interaction PLoS ONE 11, 2016
2015
Martina Sammer, Adam D Wexler, Philipp Kuntke, Helmar Wiltsche, Natalia Stanulewicz, Ernst Lankmayr, Jakob Woisetschläger and Elmar C Fuchs Proton production, neutralisation and reduction in a floating water bridge Journal Physics D: Applied Physics 48, 415501-415512, 2015
Sandra M. Cruz, Paul Tirk, Flavia M. Dalla Nora, Lucas Schmidt, Helmar Wiltsche, Cezar A. Bizzi, Günter Knapp and Erico M. M. Flores Feasibility of sulfur determination in diesel oil by inductively coupled plasma optical emission spectrometry after microwave-induced combustion using flame retardant Fuel 160, 108-113, 2015
Andrej Golubkov, Sebastian Scheikl, René Planteu, Gernot Voitic, Helmar Wiltsche, Christoph Stangl, Gisela Fauler, Alexander Thaler and Viktor Hacker Thermal runaway of commercial 18650 Li-ion batteries with LFP and NCA cathodes – impact of state of charge and overcharge RSC Advances 70, 57171-57186, 2015
Helmar Wiltsche, Monika Winkler and Paul Tirk Matrix effects of carbon and bromine in inductively coupled plasma optical emission spectrometry Journal of Analytical Atomic Spectrometry 30, 2223-2234, 2015
Thiago Linhares Marques, Helmar Wiltsche, Herbert Motter, Joaquim Araújo Nóbrega and Günter Knapp High pressure microwave-assisted flow digestion system using a large volume reactor-feasibility for further analysis by inductively coupled plasma-based techniques Journal of Analytical Atomic Spectrometry 30, 1898-1905, 2015
2014
Josef Ehgartner, Helmar Wiltsche, Sergey Borisov and Torsten Mayr Low cost referenced luminescent imaging of oxygen and pH with a 2-CCD colour near infrared camera Analyst 139, 4924-4933, 2014
Helmar Wiltsche, Farzaneh Moradi, Paul Tirk and Günter Knapp Online combustion followed by carbon dioxide removal: Evaluation of a new approach for the analysis of volatile organic substances by inductively coupled plasma optical emission spectrometry Journal of Analytical Atomic Spectrometry 29, 1767-1777, 2014
Helmar Wiltsche, Paul Tirk, Herbert Motter, Monika Winkler and Günter Knapp A novel approach to high pressure flow digestion Journal of Analytical Atomic Spectrometry 29, 272-279, 2014
2013
Rochele S. Picoloto, Helmar Wiltsche, Günter Knapp, Paola Mello, Juliano S. Barin and Erico M. M. Flores Determination of Inorganic Pollutants in Soil after Volatilization using Microwave-Induced Combustion Spectrochimica Acta Part B: Atomic Spectroscopy 86, 123-130, 2013
Andrej Golubkov, David Fuchs, Julian Wagner, Helmar Wiltsche, Christoph Stangl, Gisela Fauler, Gernot Voitic, Alexander Thaler and Viktor Hacker Thermal-runaway experiments on consumer Li-ion batteries with metal-oxide and olivin-type cathodes RSC Advances 4, 3633-3642, 2013
Violeta Ivanova-Petropulos, Helmar Wiltsche, Trajče Stafilov, Marina Stefova, Herbert Motter and Ernst Lankmayr Multi-element analysis of Macedonian wines by inductively coupled plasma–mass spectrometry (ICP–MS) and inductively coupled plasma–optical emission spectrometry (IP–OES) for regional classification Macedonian Journal of Chemistry and Chemical Engineering 32, 265-281, 2013

Other publications

2023
Daniel Knez, Patrick Petschacher, Helmar Wiltsche, Gerald Kothleitner, Tiina Nypelö and Stefan Spirk Visualizing cellulose chains with cryo scanning transmission electron microscopyMC 2023 Microscopy Conference306-307
2015
Helmar Wiltsche and Monika Winkler Listen to your RF generator - On the seeming carbon-induced enhancement of elements like arsenic and selenium in inductively coupled plasmas
Paul Tirk, Helmar Wiltsche and Günter Knapp Geschlossenes induktiv gekoppeltes Plasma: Aufbau und Charakterisierung
Paul Tirk, Helmar Wiltsche and Günter Knapp Enclosed Inductively Coupled Plasma: Fundamental Characterization, Gas Flow Dynamics and Heat Transfer
Thiago Linhares Marques, Helmar Wiltsche, Joaquim Araújo Nóbrega, Herbert Motter and Günter Knapp Microwave-assisted high pressure flow digestion: A new approach for on-line sample preparation
2014
Helmar Wiltsche and Günter Knapp Flow Digestion Systems with Microwave and Conductive HeatingMicrowave-Assisted Sample Preparation for Trace Element Determination253-280
Juliana S.F. Pereira, Helmar Wiltsche and Günter Knapp Microwave-Assisted UV DigestionMicrowave-Assisted Sample Preparation for Trace Element Determination205-229
Josef Ehgartner, Helmar Wiltsche, Sergey Borisov and Torsten Mayr Low cost referenced luminescent imaging with 2-CCD color-near infrared cameras
Andrej Golubkov, Sebastian Scheikl, René Planteu, Gernot Voitic, Helmar Wiltsche, Christoph Stangl, Gisela Fauler, Alexander Thaler and Viktor Hacker Thermal runaway of a high-energy Li-ion battery with a Li(Ni0.80Co0.15Al0.05)02 based cathodeProceedings of the 10th Minisymposium Verfahrenstechnik17-20
Helmar Wiltsche and Günter Knapp Microwave assisted flow digestion: A review
2013
Helmar Wiltsche, Paul Tirk and Günter Knapp Neue Ansätze zur Erklärung des "Carbon Enhancement Effect"
Paul Tirk and Helmar Wiltsche Development of a Tungsten Boat Furnace for the Simultaneous Determination of Ag, Bi, Pb, Te and Zn in Nickel Super Alloys Using ICP-OES
Paul Tirk, Helmar Wiltsche, Herbert Motter and Günter Knapp Mikrowellenunterstützter Hochdruckdurchflussaufschluss - ein neuer Ansatz
Andrej Golubkov, Jelena Rubesa, David Fuchs, Julian Wagner, Helmar Wiltsche, Christoph Stangl, Gisela Fauler, Gernot Voitic, Alexander Thaler and Viktor Hacker Thermal runaway behavior of commercial 18650 Li-Ion batteries
Helmar Wiltsche and Günter Knapp Microwave assisted high pressure flow digestion
Andrej Golubkov, David Fuchs, Julian Wagner, Helmar Wiltsche, Christoph Stangl, Gisela Fauler, Gernot Voitic, Alexander Thaler and Viktor Hacker Thermal runaway behavior of commercial 18650 Li-Ion batteries

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