Evaluation of soil extraction methods for uranium [Elektronische Ressource] / von Raafat Metwally Mohamed Zewainy

EVALUATION OF SOIL EXTRACTION METHODS FOR URANIUM Von der Fakultät für Lebenswissenschaften der Technischen Universität Carolo-Wilhelmina zu Braunschweig zur Erlangung des Grades eines Doktors der Naturwissenschaften (Dr. rer. nat.) genehmigte D i s s e r t a t i o n von Raafat Metwally Mohamed Zewainy aus Monofia, Ägypten apl. Professor Dr. Dr. Ewald Schnug 1. Referent: apl. Professor Dr. Robert Kreuzig 2. Referent: 18.02.2008 eingereicht am: 24.04.2008 mündliche Prüfung (Disputation) am: Druckjahr 2008 Acknowledgement I would like to express my deepest thanks to my supervisor Prof. Dr. Dr. Ewald Schnug (Head of Institute for Crop and Soil Science, Julius Kuehn-Institute, Federal Research Centre for Cultivated Plants) for his wise advices and support of this work. I am also very thankful to Prof. Dr. Robert Kreuzig (Institute of Ecological Chemistry, TU Braunschweig) for taking over the co-referee of the thesis and Prof. Dr. Dirk Selmar (Institute of Plant Biology, TU Braunschweig) for accepting to be the third examiner. My special thanks to Dr. Susanne Schroetter and Dr. Jürgen Fleckenstein for their guidance and help. I am also very grateful to all colleagues and members in Institute for Crop and Soil Science, JKI. I am also very thankful to Prof. Dr. Ahmed Khater and Prof. Dr. Mohamad Abou Seeda from NRC, Cairo for their agreement to finish my Ph. D.