SEARCH Articles Figures Tables An Introduction to Humic Substances in Soil, Sediment, and Water Humic substances Humic substances effluent water Humic substances from natural waters Humic substances from river water Humic substances river water Occurrence of humic substances in waters River water humic substances, isolation Structural analysis of humic substances in water and soils Titration river water humic substances Water Humic substances, Surface Water extractable humic substances