ABSTRACT The article compares spectral characteristics and elemental composition of the humic and hymatomelanic acids extracted from different types and kinds of peats in the Middle Ob region. It has been found that the infrared spectra of the humic and hymatomelanic acids extracted from the peats in the Middle Ob region have common characteristic absorption peaks, and they differ in the peak intensity and width. The electronic spectra of the investigated acids increase monotonically to shorter.
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