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Water contains a large number of dissolved substances. These include all non-synthetic elements and many synthetic organic micropollutants, as well as lots of suspended matter, such as bacteria, clay and nanoparticles. By analysing a selected number of substances one can obtain a ‘hydrochemical fingerprint’, which reveals the historical background of the groundwater. Such ‘forensic hydrology’ can come in handy in the event of an environmental criminal offence or disaster. This was part of the message of the lecture, entitled ‘Detecting traces in groundwater’, that Prof. Pieter Stuyfzand delivered to the TU Delft’s Faculty of Civil Engineering and Geosciences (CiTG). Stuijfzand works at KWR and holds the part-time chair of ‘Chemical Hydrogeology’ at TU Delft.
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