Variables: dissolved_oygen total_organic_carbon electric_conductivity Systems: groundwater Substances: 5-Fluorouracil (GHASVSINZRGABV-UHFFFAOYSA-N) 1-Methyl-Benzotriazole (HXQHRUJXQJEGER-UHFFFAOYSA-N) 1-Hydroxy-Benzotriazole (ASOKPJOREAFHNY-UHFFFAOYSA-N) 1-Naphthylacetic acid (PRPINYUDVPFIRX-UHFFFAOYSA-N)