Humic substances: new approaches for their isolation from natural objects

Probable Mechanism of Influence of Humic Substances on the Production Process of Green Plants

“…Следует отметить, что разделение ГВ на ГК и ВК зависит от концентрации [30]. Так, если концентрация ГВ ниже критической концентрации мицелл (ККМ), то ГК сохраняют свою агрегативную устойчивость в водном растворе с �H � 1-2.…”

DATA ON ANTIOXIDANT ACTIVITY OF HUMIC SUBSTANCES OF LOW-MINERALIZED SLUDGE SULPHIDE MUD (PELOIDS) AND THEIR CLASSIFICATION (Review)

“…Humic substances are a combination of biothermodynamically stable compounds that form, plant and animal residues having no analogues in living organisms in the process of decomposition and biotransformation, which are distinguished by dark color, polydispersity, high molecular weights [25][26][27]. All humic substances are formed as a result of the postmortal transformation of organic humification residues, process of transformation of decomposition products having different composition and origin of organic residues into humic substances [28].…”

“…Humic acids are insoluble at pH <2, in a dissolved state they have a dark brown colour, in dry stateblack powder or flakes [27]. They consist of aromatic core and peripheral part formed by specific chains.…”

“…Fulvic acids are soluble in the whole range of medium acidity, have a variable colour in the range from straw-yellow to orange colour. They vary from humic and himatomelanic acids by greater oxidation and lower carbon content, as well as greater hydrophilicity [27].…”