The pool of organic carbon and its isotopic composition in cryomorphic quasi-gley chernozems of the Trans-Baikal region

Tsybenov, Yu. B.; Chimitdorzhieva, G. D.; Egorova, R. A.; Гонгальский, К.Б.

doi:10.1134/s106422931507011x

Cited by 8 publications

(1 citation statement)

References 22 publications

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“…The highest oxygen values correspond to the preparations from Kolguev and Andrey islands in those samples where a low carbon content is observed. The high oxygen content is due to the better solubility of oxygen-enriched hydrophilic humic acid molecules and their migration to the underlying mineral horizons [32][33][34][35][36].…”

Section: Gravimetric Concentrations Are Given For C H O and N Contementioning

confidence: 99%

Molecular and elemental composition of humic acids isolated from selected soils of the Russian Arctic

Polyakov¹,

Chegodaeva

Abakumov

2019

Tomsk State University Journal of Biology

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Molecular and elemental composition of humic acids isolated from selected soils of the Russian Arctic Humic substances, isolated from selected soils of the Russian Arctic, were investigated in terms of molecular composition and stabilization rate. The degree of polar soil organic matter stabilization was assessed with the use of modern instrumental spectroscopy methods. The analysis of humic acid (HAs) preparations showed that aliphatic fragments prevail in the organic matter isolated in polar soils. The predominance of aliphatic fragments was revealed in HAs from soils located in the coastal zone, which could be caused by regular refreshment of organic matter during sin-lithogenic process and processes of hydrogenation in HAs. Breaking of the CC bonds and formation of chains with a high hydrogen content, which leads to the formation of aliphatic fragments in HAs, were noted. Data on the calculated atomic ratios of the elements in HAs are given and graphs show the main regularities in the formation of HAs and their properties. The integrated indicators of the molecular composition of humic acids of soils of the Russian Arctic are presented. The paper contains 4 Tables, 4 Figures and 44 References.

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Section: Gravimetric Concentrations Are Given For C H O and N Contementioning

confidence: 99%

Molecular and elemental composition of humic acids isolated from selected soils of the Russian Arctic

Polyakov¹,

Chegodaeva

Abakumov

2019

Tomsk State University Journal of Biology

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Vertic soils and Vertisols in cryogenic environments of southern Siberia, Russia

et al. 2017

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Amphiphilic properties of humic substances in soils of the southern Vitim Plateau (Transbaikalia, Eastern Siberia)

Milkheev

Tsybenov

2021

IOP Conf. Ser.: Earth Environ. Sci.

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Humic substances of soils are considered as a multicomponent system of amphiphilic (exhibiting both hydrophilic and hydrophobic properties) substances. Humic substances from soils of different genesis in the south of the Vitim Plateau (quasigley chernozem – Turbic Chernozem Molliglossic and brown soil – Stagnic Phaeozem Molliglossic) were studied. Using the hydrophobic interaction chromatography on Octyl-Sepharose® CL-4B, we separated a mixture of humic (HAs) and fulvic acids (FAs) due to their different ability to enter into hydrophobic interactions with the gel matrix. A higher percentage of hydrophobic compounds was revealed in HAs of quasigley chernozem, compared to HAs of brown soils, and FAs. The fulvic acid sample showed a lower capacity for hydrophobic interactions than the humic acid sample.

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The pool of organic carbon and its isotopic composition in cryomorphic quasi-gley chernozems of the Trans-Baikal region

Cited by 8 publications

References 22 publications

Molecular and elemental composition of humic acids isolated from selected soils of the Russian Arctic

Molecular and elemental composition of humic acids isolated from selected soils of the Russian Arctic

Vertic soils and Vertisols in cryogenic environments of southern Siberia, Russia

Amphiphilic properties of humic substances in soils of the southern Vitim Plateau (Transbaikalia, Eastern Siberia)

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