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Lindner, Uwe (2017)
Publisher: Humboldt-Universität zu Berlin
Languages: German
Types: Doctoral thesis
Subjects: Gadolinium, Gd-Kontrastmittel, Umwelt, ICP-MS, HPLC, ZIC-HILIC, Speziation, Gd based contrast agents, environment, speciation, 543 Analytische Chemie, VS 8407, VN 9367
ddc: ddc:540, ddc:543
Identifiers:doi:10.18452/18058
Gd-Kontrastmittel werden in der Medizin für die Magnetresonanztomographie (MRT) benötigt, um einen besseren Bildkontrast zu erzielen. Nach der Anwendung gelangen diese Arzneimittel über das Abwasser in die Klärwerke und von dort in die jeweiligen anliegenden Oberflächengewässer. Somit wird es notwendig, den Verbleib der Gd-MRT-Kontrastmittel in der Umwelt zu verfolgen und aufzuklären. In dieser Arbeit werden für die Analyse von Umweltproben Methoden zur Speziesanalytik von Gd-Kontrastmitteln entwickelt und optimiert. Hierbei wird u.a. die Zwitterionische Hydrophile Interaktionschromatographie (HILIC) verwendet, die mit einer Induktiv- gekoppelten Plasma – Massenspektrometrie (ICP-MS) gekoppelt ist. Gd based contrast agents are used for medical magnetic resonance imaging (MRI) to enhance the contrast of the image. After application and excretion, the drugs pass through the wastewater treatment plant (WWTP) and make their way into the surrounding surface water bodies. This makes it necessary to monitor the fate of the Gd based contrast agents in the environment. In this work, methods for speciation analysis of Gd based contrast agents in environmental samples were developed and optimised. For this purpose i.a. zwitterionic hydrophilic interaction chromatography (HILIC) is used, which is hyphenated with inductively coupled plasma mass spectrometry (ICP-MS).
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