Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ecotoxicology of traffic related Platinum in the freshwater environment ; Ökotoxikologische Untersuchung zu verkehrsbürtigem Platin in Süßwassersystemen
Since the introduction of Pt as a catalytic element in industrial processes and as an agent in automobile catalytic converters, the emission of the noble metal into the environment has been rising steadily. Consequently, it has been the objective of this thesis to conduct a thorough investigation of introduction of traffic related Pt into rivers and its subsequent distribution in the abiotic and biotic compartments of these systems. In addition the genotoxicological effects of Pt on aquatic organisms have been studied. Initially, the analytic procedures used in this study have been validated with regard to their suitability for analyzing Pt and other traffic related heavy metals in field samples. Furthermore, a passive monitoring study at a representative discharge location of road runoff was performed. It provided evidence about the spatial distribution of Pt in river sediments as well as the Pt accumulation in clams. Highest Pt loads were found in the sand fraction of sediment samples. Pt concentrations in sediments were strongly correlated to concentrations of other traffic related heavy metals. The results also confirm that Pt was accumulated by Corbicula sp. in the field. Due to the fact that no correlation between sediment and clam concentration could be observed, it is assumed that Pt was accumulated in soluble form or ingested with small particles from suspended particulate matter. In comparison to other traffic related heavy metals, Pt concentrations in sediment and clam samples were low. This thesis further aims on the analysis of the accumulation kinetics of Pt in the biota (e.g. bivalves, fish and fish parasites) under laboratory conditions. In exposure studies with Corbicula sp., it could be observed that the accumulation of Pt by the clams is dependent on the ambient Pt concentration. However, due to the accumulation kinetics found for Corbicula sp. it can be concluded that small differences in Pt concentrations of the ambient water (low ng/L range) can not be detected by analyzing clam tissue ...
Ecotoxicology of traffic related Platinum in the freshwater environment ; Ökotoxikologische Untersuchung zu verkehrsbürtigem Platin in Süßwassersystemen
Since the introduction of Pt as a catalytic element in industrial processes and as an agent in automobile catalytic converters, the emission of the noble metal into the environment has been rising steadily. Consequently, it has been the objective of this thesis to conduct a thorough investigation of introduction of traffic related Pt into rivers and its subsequent distribution in the abiotic and biotic compartments of these systems. In addition the genotoxicological effects of Pt on aquatic organisms have been studied. Initially, the analytic procedures used in this study have been validated with regard to their suitability for analyzing Pt and other traffic related heavy metals in field samples. Furthermore, a passive monitoring study at a representative discharge location of road runoff was performed. It provided evidence about the spatial distribution of Pt in river sediments as well as the Pt accumulation in clams. Highest Pt loads were found in the sand fraction of sediment samples. Pt concentrations in sediments were strongly correlated to concentrations of other traffic related heavy metals. The results also confirm that Pt was accumulated by Corbicula sp. in the field. Due to the fact that no correlation between sediment and clam concentration could be observed, it is assumed that Pt was accumulated in soluble form or ingested with small particles from suspended particulate matter. In comparison to other traffic related heavy metals, Pt concentrations in sediment and clam samples were low. This thesis further aims on the analysis of the accumulation kinetics of Pt in the biota (e.g. bivalves, fish and fish parasites) under laboratory conditions. In exposure studies with Corbicula sp., it could be observed that the accumulation of Pt by the clams is dependent on the ambient Pt concentration. However, due to the accumulation kinetics found for Corbicula sp. it can be concluded that small differences in Pt concentrations of the ambient water (low ng/L range) can not be detected by analyzing clam tissue ...
Ecotoxicology of traffic related Platinum in the freshwater environment ; Ökotoxikologische Untersuchung zu verkehrsbürtigem Platin in Süßwassersystemen
Ruchter, Nadine (Autor:in) / Sures, Bernd
29.08.2013
Hochschulschrift
Elektronische Ressource
Englisch
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