Characteristics of Dissolved Organic Matter and Trihalomethane Forming Potential Occurrence in Watersheds with Different Upstream Land Use

Dissolved organic matter (DOM) is the most important natural (NOM) fraction which reacts with chlorine to form harmful trihalomethanes (THMs) in water bodies. The characteristics of DOM could be affected by land use catchment, hence comprehensive study understand body important. This was conducted two watersheds different upper stream determine: (1) characteristics, total (TOM), and quality quantity based on optical absorption properties; (2) fluorescence dissolved (FDOM) compounds; (3) TOM relationships; (4) THMs forming potential (THMFP) both watersheds. Samples were collected from Cimahi Cijanggel Rivers are dominated settlements plantations, respectively. Water determined pH, electroconductivity (EC), nitrite, nitrate unfiltered filtered samples. characterized chemical oxygen demand (COD) chromophoric (CDOM) parameters (A254, A355, A3/4), compounds as FDOM compounds. measured nitrate, nitrite settlements-impacted watershed greater than those plantations-impacted watershed. main settlement-impacted river tryptophan microbial byproduct (T1) aromatic protein (T2), fulvic acid (A), humic (C). Meanwhile, T1, A, C. THMFP detected rivers