Oxidized humic acids from the soil of heat power plant - Short Communication





humic acid, microorganism, FTIR, contaminated soil


Humic acids isolated from the soil of a heat power plant (HA-E) con­ta­minated with oil were analyzed by Fourier transform infrared spectroscopy (FTIR). In comparison with a humic acids standard (HA-S), a lack of an int­ense broad band of the stretching vibrations of hydrogen-bonded hydroxyl groups (3600–3200 cm-1) is evident. The HA-E spectra have a peak at 1649 cm-1, which could belong to carbonyl groups. HA-E are heavily oxidized and among the isolated microorganisms, Achromobacter denitrificans may be res­ponsible for such intensive oxidation of HA-E. To the phylogenetically diverse nitrate-reducing microorganisms that have the capacity to utilize reduced HA as electron donors in soils, A. denitrificans can be added.


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How to Cite

S. Miletić, “Oxidized humic acids from the soil of heat power plant - Short Communication”, J. Serb. Chem. Soc., vol. 85, no. 3, pp. 421-426, Mar. 2020.



Environmental Chemistry

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