Variables: electric_conductivity Keywords: micropollutants high resolution mass spectrometry pesticides metabolites land use Systems: groundwater Substances: 5-Chloro-2-methyl-4-isothiazolin-3-on (CMI) (DHNRXBZYEKSXIM-UHFFFAOYSA-N) 1-Hydroxy-Benzotriazole (ASOKPJOREAFHNY-UHFFFAOYSA-N)