Variables: dissolved_oygen dissolved_organic_carbon total_organic_carbon electric_conductivity Keywords: high resolution mass spectrometry Substances: 6-benzyladenine (NWBJYWHLCVSVIJ-UHFFFAOYSA-N) 1-(3-Trifluoromethylphenyl)-piperazine (KKIMDKMETPPURN-UHFFFAOYSA-N) 2 -2 -Difluorodeoxyuridin (FIRDBEQIJQERSE-QPPQHZFASA-N)