This thesis is based on preliminary findings and methodologies developed in collaboration with Johanna Freilinger, Christoph Kappacher, Konstantin Huter, Jan Back, Thomas S. Hofer, Christian W. Huck and Rania Bakry with the provisional title: Interactions between Perfluorinated Alkyl Substances (PFAS) and Microplastics (MPs): Findings from an Extensive Investigation. The manuscript of the published study is included in the appendix and available in the ESM. The experimental approaches and analytical techniques detailed herein are adapted from this collaborative effort.