EXTRACTION OF HUMIC ACIDS BY THE PYROPHOSPHATE METHOD

This article provides information on an effective method for the extraction of humic acids by the pyrophosphate method of six coal objects titled "Shrub", "Fon-Yagnob", "Ziddi", "Sayad", "Nazar-Ailok" and "Kurtegin" to investigated and evaluate the source of humic acids. The study confirms that moisture content, ash content, bitumen, and the number of humic acids vary from coals sources. The humic acids were isolated and obtained from the composition of brown and hard coals by the extraction method, physicochemical studies, conformational interpretation, and structural and functional characteristics of complex compounds of humic acids