A comparative study of elemental composition, thermal characteristics, and IR and NMR spectra of humic acids recovered from modern and fossilized soils was made. The results obtained allow reconstruction of trends in variation of the environmental conditions in the course of soil formation at lake depressions in the Khakassia over a period from 3400 to 850 years before present day.
Russian Journal of Applied Chemistry – Springer Journals
Published: Oct 13, 2004
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