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1

Use of HPLC, Py-GCMS, FTIR methods in the studies of the composition of soil dissolved organic matter

100%
Rosa E., Debska B., Banach-Szott M., Tobiasova E.
Polish Journal of Soil Science
|
2015
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tom 48
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nr 1
The study has determined the composition of dissolved organic matter in Luvisols, Fluvisols and Histosols using spectroscopic (FTIR) and chromatographic (HPLC and Py-GCMS) methods. It has been found that aliphatic hydrocarbons (linear) containing from 4 to 12 atoms of carbon constitute the dominant group of compounds included in the dissolved organic matter (DOC). The preparations isolated from Histosols and Luvisols demonstrated a higher proportion of hydrophobic fraction with a longer retention time probably containing more compounds with long-chain aliphatic and simple aromatic structure than the DOC of Fluvisols. The differences in infrared spectra are evident particularly in the wave number between 1650–1030 cm⁻¹. The DOC of Histosols is richer in aromatic compounds (range 1620 cm⁻¹) but the DOC of Luvisols and Fluvisols is richer in alkene chains and hydroxyl (OH) and methoxy (OCH₃) groups. The results showed differences in the composition of the DOM across the soils, caused their genesis.
2

Wpływ resztek pozbiorowych żyta i ziemniaka na właściwości kwasów huminowych gleb różnych typów

100%
Drag M., Debska B., Tobiasova E.
Roczniki Gleboznawcze
|
2010
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tom 61
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nr 4
3

Structural investigation of humic acids of forest soils by pyrolysis-gas chromatography

100%
Banach-Szott M., Debska B., Tobiasova E., Pakula J.
Polish Journal of Environmental Studies
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2019
|
tom 28
|
nr 6
4

Content and changes in dissolved organic matter in meadow and arable soils over time

100%
Rosa E., Debska B., Pakula J., Tobiasova E.
Polish Journal of Soil Science
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2019
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tom 52
|
nr 2
Considering the discrepancies in the reports on seasonal changes in the content of dissolved organic carbon, this paper concerns the research which aimed at defining the content and seasonal changes in dissolved organic matter (DOM) in arable and meadow soils in moderate climate conditions. The research has involved the soils sampled in the kujawsko-pomorskie province (Poland). Gleic Phaeozems (meadow soils), Brunic Arenosols and Eutric Cambisols were sampled from the depth of 0-30 cm, 30-60 cm and 60-100 cm, November 2011 through September 2013. The soil samples were analyzed for dry weight content, pH, content of total organic carbon and total nitrogen. DOM was extracted with 0.004 mol·dm⁻³ CaCl₂, in the extracts the content of dissolved organic carbon (DOC) and dissolved nitrogen (DNt) were assayed. The share of DOC was determined by the soil management. The analysis of variance did not show significant differences in the content of TOC and Nt across the soil sampling dates. Were recorded changes in DOC and DNt between successive sampling dates; for topsoil for DOC – from -12.06% to 13.34% (meadow soils) and for DNt -40.84% to 47.44% (arable soils).
5

Effect of post-harvest residue of maize, rapeseed, and sunflower on humic acids properties in various soils

100%
Debska B., Drag M., Tobiasova E.
Polish Journal of Environmental Studies
|
2012
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tom 21
|
nr 3
The aim of our paper was to determine the properties of humic acids produced as a result of decomposition (under controlled conditions) of post-harvest residue of maize, rapeseed, and sunflower in different soil types (haplic luvisol, chernozems, haplic arenosols, and haplic gleysols). The extraction of humic acids was performed from the samples obtained directly once the post harvest residue was mixed with soil material, and after 360 days of incubation. The properties of humic acids were determined based on elemental analysis HPLC and HPSEC. The qualitative parameters of humic acids demonstrated that introducing sunflower postharvest residue into the soil causes the formation of humic acids typical for soils without any additives. On the other hand, properties of humic acids after introducing maize post-harvest residue into soil are most modified.
6
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Mineral composition and protein quality of organically grown ancient wheat under reduced tillage

88%
Kozera W., Szczepanek M., Knapowski T., Tobiasova E., Nogalska A.
Journal of Elementology
|
2023
|
tom 28
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nr 3
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