Assessment of the humus content in arable soils of Russia

Когут, Б. М.

doi:10.1134/s1064229312090062

Cited by 22 publications

(10 citation statements)

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“…Carbon-based surfaces widely exist in both nanoscale and macroscopic materials, and most of them contain π electron-rich structures which is a hexagonal carbon ring where there are rich π electrons, such as aromatic rings in biomolecules 1 , humus in the soil 2 3 , polycyclic aromatic hydrocarbons in air pollutants 4 5 6 , and graphene 7 8 , carbon nanotubes 9 10 , and fullerenes 11 . It has been widely reported that the accumulation of ions at carbon-based surfaces greatly impacts the properties and applications of carbon-based materials, including surface- or interface-charged behaviors 12 13 14 15 , aqueous suspension and aggregation 16 17 , surface modification 18 19 , chemical synthesis 20 21 , and the function, configuration, and stability of biological systems 22 23 24 .…”

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confidence: 99%

Ion Enrichment on the Hydrophobic Carbon-based Surface in Aqueous Salt Solutions due to Cation-π Interactions

Shi

Liu

Wang

et al. 2013

Sci Rep

139

126

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By incorporating cation-π interactions to classic all-atoms force fields, we show that there is a clear enrichment of Na+ on a carbon-based π electron-rich surface in NaCl solutions using molecular dynamics simulations. Interestingly, Cl− is also enriched to some extend on the surface due to the electrostatic interaction between Na+ and Cl−, although the hydrated Cl−-π interaction is weak. The difference of the numbers of Na+ and Cl− accumulated at the interface leads to a significant negatively charged behavior in the solution, especially in nanoscale systems. Moreover, we find that the accumulation of the cations at the interfaces is universal since other cations (Li+, K+, Mg2+, Ca2+, Fe2+, Co2+, Cu2+, Cd2+, Cr2+, and Pb2+) have similar adsorption behaviors. For comparison, as in usual force field without the proper consideration of cation-π interactions, the ions near the surfaces have a similar density of ions in the solution.

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mentioning

confidence: 99%

Ion Enrichment on the Hydrophobic Carbon-based Surface in Aqueous Salt Solutions due to Cation-π Interactions

Shi

Liu

Wang

et al. 2013

Sci Rep

139

126

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“…Humic substances, usually most of them, are associated with the mineral part of the soil and are present in fractions of fine dust and silt [7]. The humus content in the arable horizon is low.…”

Section: Research Resultsmentioning

confidence: 99%

“…The existing experience of processing actual data using standard mathematical and statistical methods of analysis and pre-processing of the sample allows us to assess the dynamic and stable properties of soils and the state of their level of fertility [7,8].…”

Section: Materials and Research Methodsmentioning

confidence: 99%

Statistical parameters of the properties of agro-gray soils in the Northern part of the forest-steppe

Gaffarova

Serzhanova

2020

BIO Web Conf.

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The paper analyzes the regional statistical characteristics of analytical and morphometric properties of agro-gray soils formed in one-factor conditions of the Privyatskaya band of the Pre-Kama region of the Republic of Tatarstan. The sampling of analytical data was carried out in accordance with the systematic group and non-eroded soil analogues. The upper part of the soil profile of the studied soil has a low humus content, medium acid reaction, the profile distribution of the sum of absorbed bases is almost uniform and is in the range of 22.6 to 26.8 mmol /100 g of soil. Generalization of the accumulated analytical and morphological information is a zero cycle of monitoring of arable soils and can serve as a reference for comparison to identify changes in the properties and morphological structure of arable soils in the region. In conditions of intensive agriculture, statistical parameters make it possible to purposefully manage soil fertility in the studied region.

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“…Organic matter (or its most important part, soil humus) is a unique component in almost any soil, since it is represented only by newly formed substances. According to the humus content in the humus horizons, soils are divided into six groups (Table 1) according to data from [11].…”

Section: Humus Contentmentioning

confidence: 99%