Variables: dissolved_oygen electric_conductivity Substances: 1-(3-Chlorophenyl)-piperazin (VHFVKMTVMIZMIK-UHFFFAOYSA-N) 1-Naphthylacetic acid (PRPINYUDVPFIRX-UHFFFAOYSA-N) Systems: groundwater Keywords: monitoring MetFrag micropollutants high resolution mass spectrometry