Advances in colloidal and solute groundwater tracing for hygienic risk assessment [Elektronische Ressource] / von Nadine Göppert

Advances in colloidal and solute groundwater trac ingfor hygienic risk assessmentZur Erlangung des akademischen Grades einesDoktors der Naturwissenschaften an der Fakultät für Bauingenieur-, Geo- und Umweltwissenschaftender Universität KarlsruhegenehmigteDissertationvonNadine GöppertausLahr/Schwarzwald2008Tag der mündlichen Prüfung: 21. Mai 2008Referent: Prof. Dr. H. HötzlKorreferent: Prof. Dr. C. GrovesIAbstractTracing techniques are often applied in order to characterize ground waterflow and to delineate drinking water protection zones. Within the scope of theBWPLUS-Project BWR 23008 „Development of an optimized tracing technique to evaluate the hygienic risk for groundwater resources using fluorescent microspheres“ the application of invisible and non-toxic microspheres for thispurpose was proposed and the available experimental and analytical m ethodswere further developed and optimized. The transport characteristics of particletracers were compared with those of well-established solute tracers, such asfluorescent dyes and salts.Laboratory experiments were performed in order to compare four dif ferentdetection methods: 1) counting under the fluorescence microscope, 2) fluorescence particle counter, 3) spectrofluorometer and 4) photomet er. Thedifferent methods were validated and showed reproducible and reliable results.The different methods showed strengths in different fields of application.