Organizations: Contaminant fate processes Variables: dissolved_oygen dissolved_organic_carbon concentration Keywords: high resolution mass spectrometry Systems: groundwater Substances: 1-Methyl-Benzotriazole (HXQHRUJXQJEGER-UHFFFAOYSA-N) 2 -2 -Difluorodeoxyuridin (FIRDBEQIJQERSE-QPPQHZFASA-N)