Characterization of the Extracted Humic AcidAuthor(s): Mitu Liviu
Humus is a composite of a complex polydisperse polymer consisting of various structures and composite regions, widely distributed in natural soil, water and minerals. It is mainly composed of C, O, H, and N, where the fraction of organic carbon is usually between 40 and 60%. (1???4) According to their source, humus can be divided into soil humus, aquatic humus, and mineral humus. According to its composition and composition, humus can be divided into fulvic acid (FA), humic acid (HA), and humin. Of the three components of humus, FA is the alkali- and soluble acid, HA is the soluble component of alkali and soluble acid, and humin is the insoluble residue.