Variables: dissolved_organic_carbon Substances: 4-Acetamidoantipyrin ( N-Acetyl-4-Aminoantipyrin 4-AAA) (OIAGWXKSCXPNNZ-UHFFFAOYSA-N) 2-Aminobenzimidazole (JWYUFVNJZUSCSM-UHFFFAOYSA-N) 5-Fluoro Cytosine (XRECTZIEBJDKEO-UHFFFAOYSA-N) 2-Amino-4-methoxy-6-methyl-1-3-5 triazine (NXFQWRWXEYTOTK-UHFFFAOYSA-N)