Variables: dissolved_oygen electric_conductivity pH Keywords: land use Substances: Acesulfame (YGCFIWIQZPHFLU-UHFFFAOYSA-N) 18-beta-Glycyrrhetinic acid (MPDGHEJMBKOTSU-YKLVYJNSSA-N) 1-Naphthylacetic acid (PRPINYUDVPFIRX-UHFFFAOYSA-N)