1. Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
2. Center of Integrative Petroleum Research, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
3. Department of Physics, University of the Free State, Bloemfontein 9300, Republic of South Africa
4. Faculty of Physics, University of Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
5. Institut für Angewandte Geowissenschaften, Technische Universität Darmstadt, Schnittspahnstrasse 9, 64287 Darmstadt, Germany
6. Department of Chemistry, King Fahd University of Petroleum and Minerals, P. O. Box 5048, Dhahran 31261, Saudi Arabia
7. Institut für Bioprozess-und Analysenmesstechnik e.V., Rosenhof 1, 37308 Heilbad Heiligenstadt, Germany