1. TOFWERK AG, Thun, Switzerland
2. Department of Environmental Geosciences, University of Vienna, Vienna, Austria
3. Swiss Federal Institute of Technology (ETH), Zurich, Switzerland
4. Carnegie Mellon University (CMU), Pittsburgh, USA
5. Ghent University, Department of Chemistry, Atomic & Mass Spectrometry – A&MS research group, Ghent, Belgium
6. University of South Carolina (USC), Columbia, USA
7. Federal Institute for Materials Research and Testing (BAM) – Division 1.1 – Inorganic Trace Analysis, Berlin, Germany
8. Helmholtz-Centre for Environmental Research (UFZ), Leipzig-Halle, Germany
9. Iowa State University (ISU), Ames, USA