Variables: dissolved_oygen pH concentration Keywords: monitoring pesticides metabolites Substances: 18-beta-Glycyrrhetinic acid (MPDGHEJMBKOTSU-YKLVYJNSSA-N) Acetochlor-ESA (HXAIQOCRALNGKB-UHFFFAOYSA-N) 1-(3-Trifluoromethylphenyl)-piperazine (KKIMDKMETPPURN-UHFFFAOYSA-N)