Organizations: Contaminant fate processes Variables: pH Substances: 18-beta-Glycyrrhetinic acid (MPDGHEJMBKOTSU-YKLVYJNSSA-N) 5-Fluorouracil (GHASVSINZRGABV-UHFFFAOYSA-N) 1-Methyl-Benzotriazole (HXQHRUJXQJEGER-UHFFFAOYSA-N) Systems: groundwater Keywords: high resolution mass spectrometry monitoring