Variables: total_organic_carbon electric_conductivity Substances: 1-(3-Chlorophenyl)-piperazin (VHFVKMTVMIZMIK-UHFFFAOYSA-N) 3-5-Diamino-2-4-6-triiodobenzoic acid (GOQCZMZLABPEME-UHFFFAOYSA-N) Systems: groundwater Keywords: MetFrag micropollutants high resolution mass spectrometry