Variables: dissolved_oygen dissolved_organic_carbon total_organic_carbon electric_conductivity Keywords: micropollutants high resolution mass spectrometry Systems: groundwater Substances: 1-3-Dimethyl-2-imidazolidinon (CYSGHNMQYZDMIA-UHFFFAOYSA-N) 1-(3-Chlorophenyl)-piperazin (VHFVKMTVMIZMIK-UHFFFAOYSA-N)