The first results on water quality parameters have been analysed at Aarhus University. The results will be used to characterize typically occurring pollutants in each catchment. Aarhus University has screened runoff from 22 rain events during the summer of 2023 for the following substances; copper, zinc, manganese, cadmium, chromium, lead, nickel and aluminium among others.
Of the investigated pollutants, zinc was most often detected and was also found in the highest concentration (Fig. 1).
This finding was evident at all the sites. Manganese and aluminium was also detected in several instances but at lower concentrations than zinc. At Risvangen which is an older part of Aarhus the zinc concentration was by far the highest. The concentration of zinc in Danish streams have already been highlighted as a potential environmental issue, and this is likely not limited to Denmark.
Fig 1. Shows the concentration of zinc, aluminium and manganese in 22 run off events during the summer of 2023
Authors: Emil Arboe Jespersen: emil@bio.au.dk - (31/01/2024)