The change of the peat element composition and optical properties under the thermal modification influence

The chemical structure change and the element (C,H,N,S,O) content in the peat organic substance under the heat treatment (250°С) influence and depending on the peat decomposition type and extent are considered in the article. The correlations of the absorption strip optical density of oxygen-containing groups and aliphatic substitutes to the absorption strip optical density of the aromatic poly-interfaced systems are calculated according to IR-spectroscopy.