Variables: dissolved_organic_carbon total_organic_carbon electric_conductivity Keywords: monitoring MetFrag pesticides metabolites land use Substances: 1-Naphthylacetic acid (PRPINYUDVPFIRX-UHFFFAOYSA-N) 1-(3-Trifluoromethylphenyl)-piperazine (KKIMDKMETPPURN-UHFFFAOYSA-N)