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Methodenentwicklung zur Analyse und Quantifizierung von Mikroplastikpartikeln in Mischwasserproben

Lauer, Julia

Abstract (englisch):

This master thesis deals with the development of a method for separation, identification and quantification of microplastic particles (1 μm to 5 mm) in combined wastewater samples. In an experimental series already existing treatments were tested for their applicability on combined wastewater matrices by using an iterative process. Due to a long dry weather period in summer 2015 pure effluent samples were mostly used for the tests. As a result of the experiments a method for sample preparation was developed consisting of six sub-steps: (1.) sampling of 1 L combined wastewater, (2.) wet sieving of the sample through a 63 μm stainless steel mesh sieve and drying of the solids at 60°C, (3.) „wet peroxide oxidation“ (WPO) with Fe(II) solution as a catalyst, (4.) intermediate washing step, (5.) density separation by using a ZnCl2 solution (density = 1;6-1;7 g / cm³) and (6.) filtration of the microplastic particles on a polycarbonate filter. Due to the used mesh size the lower detection limit of the method is 63 μm. Furthermore, three identification methods described in literature were tested on their applicability. The optical assessment via microscope allowed for a first identification of potential microplastic particles and synthetic fibers in combined wastewater samples, however, a precise characterization was not possible. ... mehr


Volltext §
DOI: 10.5445/IR/1000054234
Cover der Publikation
Zugehörige Institution(en) am KIT Fakultät für Bauingenieur-, Geo- und Umweltwissenschaften – Institut für Mineralogie und Geochemie (IMG)
Institut für Wasser und Gewässerentwicklung (IWG)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Hochschulschrift
Publikationsjahr 2016
Sprache Deutsch
Identifikator urn:nbn:de:swb:90-542345
KITopen-ID: 1000054234
Verlag Karlsruher Institut für Technologie (KIT)
Umfang 159 S.
Art der Arbeit Abschlussarbeit - Master
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
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