Laser Ablation - Collision Cell - Multi-Collector Inductively Coupled Plasma Mass Spectrometer

• Subject Area: Mineralogy, Petrology and Geochemistry
• Term: Funded in 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 464108474

The latest models of multi-collector inductively coupled plasma mass spectrometer, when equipped with a newly-developed collision (gas reaction) cell and a nanosecond laser ablation source, will enable the precise and accurate measurements of isotope ratios of a large number of elements. Up to now, elements such as Ca, K or Cr could only be analysed with limited precision using these techniques. Researchers from the Bayerisches Geoinstitut and Environmental Geochemistry group of the Geoscience Department at the University of Bayreuth answer fundamental scientific questions about Earth’s origin, formation and surface processes using the isotopic compositions of planetary, experimental and environmental samples. We will measure long-lived and short-lived radiogenic isotope systems to obtain high-resolution formation and evolution histories of Earth and planetary materials from asteroids, Moon, and Mars, and thereby constrain the origin of the Solar System and planets and their impact histories. We will also measure the isotope fractionation signatures of non-traditional metal stable isotopic systems, which can be used as tracers of planetary and magmatic processes and as environmental proxies associated with metal speciation of redox-sensitive trace elements. The laser ablation source will enable in-situ isotopic measurements of mineral grains in natural and extra-terrestrial materials, and of small phases created in experiments at the renowned high-pressure facility at BGI. These new mass spectrometry facilities will therefore enable collaborative research in isotope geochemistry between the experimental planetology and environmental science groups at the University of Bayreuth. Establishing these state-of-the-art analytical facilities will place the University of Bayreuth at the forefront of metal isotope research in natural and experimental samples to better understand the origin, formation, and evolution of Earth, from its habitable surface to its core.

• DFG Programme: Major Research Instrumentation
• Major Instrumentation: Multi-Kollektor Massenspektrometer mit induktiv gekoppeltem Plasma, Kollisionszelle & Laserablation
• Instrumentation Group: 1700 Massenspektrometer
• Applicant Institution: Universität Bayreuth
• Leader: Professorin Audrey Bouvier, Ph.D.