Organizations: Contaminant fate processes Variables: electric_conductivity Substances: 18-beta-Glycyrrhetinic acid (MPDGHEJMBKOTSU-YKLVYJNSSA-N) 3-5-Diiodo-L-tyrosine (NYPYHUZRZVSYKL-ZETCQYMHSA-N) Systems: groundwater Keywords: high resolution mass spectrometry monitoring MetFrag pesticides metabolites