Variables: electric_conductivity Keywords: MetFrag monitoring pesticides metabolites Systems: groundwater Substances: Acetazolamide (BZKPWHYZMXOIDC-UHFFFAOYSA-N) 18-beta-Glycyrrhetinic acid (MPDGHEJMBKOTSU-YKLVYJNSSA-N) 1-[(4-Chlorophenyl)phenylmethyl]piperazine (UZKBSZSTDQSMDR UHFFFAOYSA-N)