Variables: dissolved_organic_carbon total_organic_carbon Substances: 1-Hydroxy-Benzotriazole (ASOKPJOREAFHNY-UHFFFAOYSA-N) 1-Propanesulfonate (KCXFHTAICRTXLI-UHFFFAOYSA-N) Systems: groundwater Keywords: MetFrag micropollutants high resolution mass spectrometry land use