What are the main components of lignite humic acid? Do you have the test report of finished lignite humic acid to send?

Coal can be artificially oxidized (such as treated with air, ozone or nitric acid) to form regenerated humic acid, which can be divided into three components according to its solubility in solvents: ① the part dissolved in acetone or ethanol is called brown humic acid; ② The part insoluble in acetone is called black humic acid; ③ The part dissolved in water or dilute acid is called fulvic acid (also called fulvic acid).

The basic structure of humic acid macromolecules is aromatic ring and aliphatic ring, and functional groups such as carboxyl group, hydroxyl group, carbonyl group, quinone group and methoxy group are connected to the ring. It has exchange, adsorption, complexation and chelation with metal ions; As a polyelectrolyte in dispersion system, it has the functions of coagulation, peptization and dispersion. Humic acid molecules also have a certain amount of free radicals, which have physiological activities.

Modified humic acid refers to humic acid from various sources after chemical treatment (such as oxidation, sulfonation, degradation, halogenation, nitration, polycondensation, ammoniation, amidation, etc. (Generally, humic acid should be extracted before modification).