The Surface Chemistry of Humic Substances in Aquatic Systems

摘要: The yellow, brown or red coloured organic substances that can be extracted from soils and sediments by alkaline solutions have long been recognised studied (Achard, 1786; Saussure, 1804) Their importance was probably first acknowledged soil scientists in terms of their effect on condition (structure), retention moisture fertility these workers carried out most the early structure characterization (Stevenson, 1982). In more recent years water similar compounds are present almost all natural waters they also play an important role many aquatic processes (Thurman, 1985; Aiken et al., 1985).