Abstract
The aim of the research work is to quantify interaction between phenanthrene with modified humic acids in aquatic environment. The changes in the structure and properties of humic acids after modifications were studied with 1H NMR spectroscopy and potentiometric titration methods. Our research demonstrates that the application of thiourea as a modified agent increases the binding capacity of humic acids towards phenanthrene.
Highlights
Polycyclic aromatic hydrocarbons (PAH) – are organic compounds, consisting of three or more condensed aromatic rings and have particular interests regarding their toxic and cancerogenic properties [1]
The effort is going towards finding new methods, which are based on organic compounds, like humic acids (HA)
The modification of the structure of peat humic acids in the presence of thiourea and mechanochemical action provides an increase in the hydrophobicity of macromolecules structure, increasing the number and availability of aromatic fragments involved in interaction with various PAHs
Summary
Polycyclic aromatic hydrocarbons (PAH) – are organic compounds, consisting of three or more condensed aromatic rings and have particular interests regarding their toxic and cancerogenic properties [1]. Typical representative of PAH is phenanthrene, anthropogenic sources among which are coal tar, oil and products of its processing, cigarettes smoke, etc. Up-to-date methods to purify water from phenanthrene and it various oxidation compounds are used (water oxidation with ozone, hydrogen peroxide and UV exposure). These thod are not environmentally friendly and costly [3]. The effort is going towards finding new methods, which are based on organic compounds, like humic acids (HA)
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