Cordula Witzig

Cordula Witzig
TZW: DVGW-Technologiezentrum Wasser (German Water Centre) · Department of Water Chemistry Research

Master of Applied Science

About

8
Publications
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96
Citations

Publications

Publications (8)
Article
Full-text available
Microplastics are a widespread contaminant found not only in various natural habitats but also in drinking waters. With spectroscopic methods, the polymer type, number, size, and size distribution as well as the shape of microplastic particles in waters can be determined, which is of great relevance to toxicological studies. Methods used in studies...
Poster
Full-text available
During the last years, several studies were published, investigating the abundance of microplastics in clean waters, such as ground, tap or bottled waters. However, methods show a huge diversity in experimental setups and often a lack of certain quality assurance aspects. To overcome this issue, harmonization of analytical methods is necessary. To...
Article
Full-text available
Microplastics (MP) as emerging persistent pollutants were found in raw and drinking water worldwide. Since different methods were used, there is an urgent need for harmonized protocols for sampling, sample preparation, and analysis. In this study, a holistic and validated analytical workflow for MP analysis in aqueous matrices down to 5 μm is prese...
Article
Apart from being considered a potential threat to ecosystems and human health, the ubiquity of microplastics presents analytical challenges. There is a high risk of sample contamination during sampling, sample preparation and analysis. In this study, the potential of sample contamination or misinterpretation due to substances associated to disposab...
Article
This paper presents the results of the first international comparative study of commonly applied analytical methods for microplastic analysis. Although it was shown that the comparability between previously published studies is highly limited, there are ambitious efforts regarding the standardization of microplastic analysis. This comparative study...

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Projects

Projects (2)
Project
MicBin aims to improve our understanding of microplastic sources, sinks and fluxes within the German part of the Danube catchment. For this purpose field measurements, laboratory analyses and modelling is combined. Field campaigns to detect microplastic loads in main tributaries of the Danube are performed taking also effluxes from water treatment plants into account. Plot experiments are used to determine potential microplastic fluxes via soil erosion. Atmospheric depositions are monitored. Laboratory experiments aim to determine specific pathways of microplastic transported into inland waters. Therefore, lysimeter experiments are performed and leachates from landfills are analysed. Overall the project has a strong analytical focus using different methods (e.g. Raman and FT-IR spectroscopy) to determine microplastic in water. Last but not least the project has a modelling component using the field and laboratory data and sub-catchment modelling results to do first estimates of the overall microplastic fluxes in the German part of the River Danube. See also www.micbin.de
Project
To investigate the behavior of microplastic particles during treatment of surface water in detail, a method to detect and analyze microplastic particles by Raman micro-spectroscopy is established. The aim for drinking water samples is a lower limit of the particle diameter of 1 μm. Water treatment processes are evaluated for their efficiency to retain and remove microplastic particles. Moreover, the impact of water disinfection processes on microplastic particles is studied. In cooperation with project partners, potential changes in the properties of microplastic particles due to water treatment and the resulting impact on organisms is investigated. Besides surface water, groundwater is a topic of the study.