1. Joint Mass Spectrometry Centre, Cooperation Group “Analysis of Complex Molecular Systems”, Institute of Ecological Chemistry, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
2. Joint Mass Spectrometry Centre, Chair of Analytical Chemistry, Institute of Chemistry, University of Rostock, Dr.-Lorenz-Weg 1, 18059 Rostock, Germany
3. Tofwerk AG, Uttigenstrasse 22, 3600 Thun, Switzerland
4. BIfA—Bavarian Institute of Applied Environmental Research and Technology GmbH, Am Mittleren Moos 46, 86167 Augsburg, Germany