Analysis of Organic Matter in Caustobioliths by Diffuse Reflectance Infrared Fourier Transform Spectroscopy

The structural organization of syngenetic caustobioliths is studied on the basis of diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). Similarities and differences are found, regardless of the origin of the initial organic plant matter (fossilization, peat formation, coalification...

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Bibliographic Details
Published in:Coke and chemistry (New York, N.Y.) N.Y.), 2023-05, Vol.66 (5), p.264-276
Main Authors: Ivanov, V. P., Dmitrienko, A. A., Rychkova, I. V., Isayeva, E. R., Timkin, T. V., Boldina, D. A., Pahtaeva, M. G.
Format: Article
Language:English
Subjects:
Chemical elements
Chemistry
Chemistry and Materials Science
Cluster analysis
Coal
Diffuse reflectance spectroscopy
Fourier transforms
Functional groups
Industrial Chemistry/Chemical Engineering
Infrared analysis
Infrared spectroscopy
Organic matter
Peat
Spectrum analysis
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Summary:The structural organization of syngenetic caustobioliths is studied on the basis of diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). Similarities and differences are found, regardless of the origin of the initial organic plant matter (fossilization, peat formation, coalification). In the proposed approach, the results of structural–group and structural–genetic analyses reveal the features of caustobiolith formation. Samples of humic origin (peat, horsetail phytoleima, coal) and sapropelic origin (bottom sediment, propteridophyte phytoleima, liptobiolith coal) are studied experimentally. The results show that individual functional groups consisting of chemical elements (C, N, O, S. Si) within functional structural units may be positioned as clarates within the structure of coalified matter. Clarates provide additional information regarding not only the structural variation of coal-forming plants and their residues (phytoleima) under the influence of carbonization (fossilization), peat formation, and subsequent coalification. Functional and structural units such as clarates are found to permit clear identification of planar and interplanar bonds within coalified materials. On that basis, we may characterizes the proposed approach as structural–cluster analysis.
ISSN:1068-364X
1934-8398
DOI:10.3103/S1068364X23700801