1. Technical Chemistry I
2. University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)
3. 45141 Essen
4. Germany
5. Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU)
6. Interdisciplinary Center for Analytics on the Nanoscale (ICAN) and Center for Nanointegration Duisburg-Essen (CENIDE)
7. University of Duisburg-Essen
8. 47057 Duisburg