Variables: dissolved_oygen total_organic_carbon pH Keywords: MetFrag high resolution mass spectrometry micropollutants Systems: groundwater Substances: 1-Propanesulfonate (KCXFHTAICRTXLI-UHFFFAOYSA-N) 1-Methyl-Benzotriazole (HXQHRUJXQJEGER-UHFFFAOYSA-N)