Variables: electric_conductivity Substances: 1-3-Dimethyl-2-imidazolidinon (CYSGHNMQYZDMIA-UHFFFAOYSA-N) 2-Amino-4-methoxy-6-methyl-1-3-5 triazine (NXFQWRWXEYTOTK-UHFFFAOYSA-N) Systems: groundwater Keywords: monitoring micropollutants high resolution mass spectrometry