J Appl Biomed 3:13-24, 2005 | DOI: 10.32725/jab.2005.002

Humic substances - compounds of still unknown structure: applications in agriculture, industry, environment, and biomedicine

Eladia M. Peña-Méndez1,*, Josef Havel2, Jiří Patočka3
1 Department of Analytical Chemistry, Nutrition and Food Science, Faculty of Chemistry, University of La Laguna, Spain
2 Department of Analytical Chemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
3 Department of Toxicology, Military Medical Academy, Hradec Králové and Department of Radiology, Faculty of Health and Social Studies, University of South Bohemia, České Budějovice, Czech Republic

Humic substances as part of humus-soil organic matter - are compounds arising from the physical, chemical and microbiological transformation (humification) of biomolecules. They are important because they constitute the most ubiquitous source of non-living organic material that nature knows. Approximately 80% of the total carbon in terrestrial media and 60% of the carbon dissolved in aquatic media are made up of humic substances. Humic substances have important roles in soil fertility, and are considered to have primal relevance for the stabilization of soil aggregates. They can be divided into three components according to their solubility: humic acids, fulvic acids and humin. Humic acids are the most explored group of humic substances. Beyond their relevance for life these substances have industrial applications in the development of absorbents to be used at the sources of metal-poisoning. Being natural substances, their purification process is cheaper than the synthesis of any other sorbent and, moreover, due to their high operability, they absorb more than the absorbents used to date, such as active charcoals or clays. The specific properties of humic acid products enable their application in industry, agriculture, environmental and biomedicine.

Keywords: humification; humin; humic acids; fulvic acids

Received: September 20, 2004; Revised: October 20, 2004; Published: March 31, 2005  Show citation

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Peña-Méndez EM, Havel J, Patočka J. Humic substances - compounds of still unknown structure: applications in agriculture, industry, environment, and biomedicine. J Appl Biomed. 2005;3(1):13-24. doi: 10.32725/jab.2005.002.
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