Arjen Markus, Deltares/UvA

Title: Engineered (inorganic) nanoparticles in the river Dommel?
Session: Tuesday 6 October, 14:15


Nanoparticles and their derivatives are expected to be present in wastewater and in the receiving surface waters but measured data are very scarce. To address this lack of data, we chose the river Dommel to investigate the possible presence of nanoparticles, because it is a well-studied river, which has been the subject of research within NanoNextNL before, and contains one large wastewater treatment plant (WWTP) that discharges into the river.

Different sample conservation and pre-treatment procedures prior to analysis were applied. Afterwards, the concentrations of several metals, often used in the production of engineered nanomaterials, were determined by high resolution inductively coupled plasma mass spectrometry (HR-ICP-MS) in surface waters from the river Dommel and the in- and effluent of the WWTP. Additional analyses were performed with electron microscopy.

The results, based on nanofiltration and ICP-MS suggest that the emission of nanoparticles by the treatment plant is limited, but microscopic investigation revealed that clustered titanium nanoparticles are present in the influent of the WWTP.





 to be announced


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