Variables: dissolved_oygen total_organic_carbon electric_conductivity concentration Substances: 1-Naphthylacetic acid (PRPINYUDVPFIRX-UHFFFAOYSA-N) 4-Acetamidoantipyrin ( N-Acetyl-4-Aminoantipyrin 4-AAA) (OIAGWXKSCXPNNZ-UHFFFAOYSA-N) Keywords: high resolution mass spectrometry monitoring