Humic substances in soils and sediments can be divided into three main fractions : humic acids, fulvic acids, and humin.
22.
The Lignite / Brown Coal of Kingri Coal fields in percentage from 44-79 Percent use in formation of Humic Acid.
23.
It is the case of humic acids and fulvic acids, natural polyelectrolyte substances having respectively higher and lower molecular weights.
24.
It has been reported to contain at least 85 minerals in ionic form, as well as triterpenes and humic acids.
25.
As new peat replaces the old peat, the older material underneath rots and releases humic acid, also known as bog acid.
26.
Humic acids are precipitated from this solution by adjusting the pH to 1 with hydrochloric acid, leaving the fulvic acids in solution.
27.
The waters are very poor in dissolved nutrients and rich in humic acids and tannins, which give them its characteristic brown color.
28.
It is, together with chloroform, a minor side-product of the chlorination of water when organic residues such as humic acids are present.
29.
""'Desulfitobacterium metallireducens " "'is an anaerobic bacterium that couples growth to the reduction of metals and humic acids as well as chlorinated compounds.
30.
The formation of ( chelate ) complexes is an important aspect of the biological role of humic acids in regulating bioavailability of metal ions.
