Nature of functional groups and sorption interaction of humine substances in water medium

The results of studies in to nature, origin, molecular structure and composition of functional groups of humic, fulvic acids and their salts are generalized. It is shown that as to the composition of functional groups and a number properties, the humin substances are close to proteins, from which they inherited bipolar aminoacidic groupings, in particular. This fact must be taken into account in the estimating their behaviour in waters since they influence essentially on the such properties as aggregate state, liability to pH effect, interaction with ions of alkali, alkaline earth and heavy metals, interaction with coagulants, etc.