1. Chair for Analytical Chemistry
and Institute of Hydrochemistry, Technische Universität München, Marchioninistraße 17, D-81377 Munich,
Germany
2. Chair of Food Safety,
Veterinary
Faculty, Ludwig-Maximilians-Universität München, Schönleutnerstraße 8, D-85764 Oberschleissheim, Germany
3. Mikrogen GmbH, Floriansbogen 2-4,
D-82061 Neuried, Germany