Multicollector ICPMS Laboratory

  • The multicollector inductively-coupled-plasma mass-spectrometer (MC-ICPMS) laboratory provides a facility for measuring high precision isotope ratios of elements that can be introduced as dissolved ions in solution (generally metals). The instrument is used to obtain a wide range of information from geochronology to tracing of source information to fingerprint processes such as reduction and diffusion. The laboratory at UIUC is positioned at the frontier of many applications of this instrument, focussing on several non-traditional systems as detailed below. Come explore and see what we are up to!

    We proudly own a Nu Plasma HR (MC-ICP-MS), a state of the art multicollector inductively-coupled-plasma mass-spectrometer. This Magnetic Sector instrument is specifically designed for accurate and precise isotope measurments, essential for providing "flat-topped" peak signals. A flat top and concurrent beam measurement is necessary since ion beams (particularly those generated by an ICP Source and varying Sample Introduction) always have small variations in relative intensities during analysis. Our "left-handed" instrument features double-focusing Nier Johnson design, in which the ESA precedes the magnet. The magnet is followed by a Zoom Lens System that magnifies/demagnifies the beams into a Multicollection Dector Array.

    We are a collaborative research group that has diverse questions spanning isotopes, geochronology, environmental geochemistry, igneous petrology and the fate and transport of redox-sensitive contaminants in our environment. At present, we are conducting analyses of varied matrices for stable, non-traditional and radiogenic isotope ratios. Our research spans geology, the earth and environmental science. Research is led by Craig Lundstrom (Associate Professor) and Tom Johnson (Associate Professor). The isotope geochemistry laboratory (NHB 131) is run by Justin Glessner (Research Specialist).

    Chromium - Magnesium - Mercury - Iron - Selenium - Silicon - Strontium - Uranium Series