1. Department of Chemistry Aalen University Aalen Germany
2. Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU) Universitätsstraße University of Duisburg‐Essen Essen Germany
3. Laboratory for Experimental Medicine Lilly Corporate Center Eli Lilly and Company Indianapolis IN USA
4. Agilent Technologies R&D and Marketing GmbH & Co. KG Hewlett‐Packard‐Straße 8 Waldbronn Germany