Fractional Composition of Organic Matter and Properties of Humic Acids in the Soils of Drained Bogs of the Siedlce Heights in Eastern Poland

Becher, Marcin; Tołoczko, Wojciech; Godlewska, A.; Pakuła, K.; Żukowski, Emil

doi:10.12911/22998993/146679

Cited by 10 publications

(20 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ukalska-Jaruga et al (2019) observed almost similar trends (i.e., AF>AH rates) on arable and grassland soils with lower HS contents for arable sites. With higher humic fractions than those of our study, Becher et al (2022) on the contrary found HA fractions more abundant than FA in all peat profiles. Inappropriate agricultural practices accelerate OM mineralization and change from FA to HA abundance or inversely (Ukalska-Jaruga et al, 2019).…”

Section: Fulvic Acid Humic Acid and Humin Fractionscontrasting

confidence: 98%

Estimation of Dissolved Organic Carbon in River Flows and Identification of the Relationships Between Peat Humic Fractions and Physicochemical Qualities

Mutonkole¹,

Tangou²,

Kanda³

2022

OJER

View full text Add to dashboard Cite

Peatlands are wetlands that contain higher amounts of carbon, some of which is often released with water in dissolved form, especially when land use change occurs. However, peatland carbon is mostly stabilized in humic fractions where it forms complexes with metallic elements. This study sought to measure the levels of dissolved organic carbon (DOC) in rivers and analyze the link between physicochemical parameters and humic fractions along the Buhandanda and Lushala peat profiles. Inductively-Coupled Plasma Optical Emission Spectrometry, chemical fractionation followed by sulfochromic oxidation, and dosing by indirect chemical oxidation were used to determine major geochemical elements (MGE), humic fractions (HS), and DOC, respectively. Average MGE concentrations were 4.1±1.4, 3.6±0.5, 2.8±0.6, 1.8±0.7, 1.1±0.4, 0.3±0.1, 0.1±0.0, 0.5±0.3, 0.1±0.0, 0.03±0.0, 0.03±0.0 and 1.9±0.9, 3.6±0.8, 2.5±0.6, 2.0±0.5, 1.1±0.4, 0.3±0.0, 0.09±0.01, 0.18±0.1, 0.06±0.04, 0,02±0.0 for Ca, Fe, Si, Al, S, Ti, K, Mg, Mn, Na for Lushala and Buhandanda, respectively. Fulvic acid (FA) fractions were constantly higher than humic acid (HA) from 0 to 80 cm and lower beyond on Buhandanda peaty profile. FA was also higher than HA for Lushala peat except for depths 20, 90, 140, and 200 cm. Humin (HU) was the highest fraction on the two peatlands. Humification index (HI) and degree of transformation (DT) of HS had values of the same order of magnitude (from 0.32 to 2.43). No association was found between physicochemical properties and HS, except for FA and Fe, Ca, S, Mg, Mn, Se on Lushala peat. DOC showed a downward trend from entry to exit of peatlands. The two sites were not statistically different. Mountainous peat can contain high levels of MGE and loses a tiny fraction of its carbon with runoff waters.

show abstract

Section: Fulvic Acid Humic Acid and Humin Fractionscontrasting

confidence: 98%

Estimation of Dissolved Organic Carbon in River Flows and Identification of the Relationships Between Peat Humic Fractions and Physicochemical Qualities

Mutonkole¹,

Tangou²,

Kanda³

2022

OJER

View full text Add to dashboard Cite

show abstract

“…Compared against the results of Jonczak (2013), Drąg et al (2007) and Kobierski et al (2018), it was found that the tested HA molecules had lower A 4/6 absorbance coefficients and ΔlogK absorbance coefficients. It is worth emphasizing that the tested HAs had slightly higher values of the A 4/6 and ΔlogK absorbance coefficients than do HAs in peat soils (Becher et al, 2022). Filcheva et al (2018) hold that there is a direct relationship between the groups with prevailing HAs or FAs in the humic products and the A 4/6 ratio.…”

Section: Properties Of Humic Acidsmentioning

confidence: 89%

“…The results of the meadow soil tests presented by Drąg et al (2007) corresponded with the examined HA molecules, exhibiting similar values of H/C, O/H and the ω parameter. However, compared to the properties of HAs in peat soils (Becher et al, 2022) and Chernozems (Łabaz, 2010), the tested HAs had a lower degree of maturity, as evidenced by higher H/C ratios and lower ω parameter values.…”

Section: Properties Of Humic Acidsmentioning

confidence: 90%

Humic acids in permanent grasslands of the Czersk Meadows Complex, north Poland

Banach-Szott¹,

Dziamski²

2022

Soil Sci. Ann.

View full text Add to dashboard Cite

The research objective was to determine basic soil properties and the stability of humic acids (HAs) in individual layers of the A horizon of meadow soils. Soil samples were collected from the unique Czersk Meadow Complex in north Poland, 25 years after the end of "slope-and-fl ooding" irrigation that had lasted for 150 years. It is a continuation of research being carried out on the Czersk Meadows. In the previous studies (Banach-Szott et al. 2021a), continuously irrigated soils were analysed. The total organic carbon content (TOC), total nitrogen content (Nt) and grain size composition were determined in soil samples. Humic acids were extracted by Schnitzer method and analysed for: elemental composition, spectrometric parameters in the UV-VIS range and hydrophilic and hydrophobic properties. The tested soils consisted largely of sand fraction, with only small amounts of clay. The TOC, Nt and TOC/Nt ratio values all depended on soil sampling depth and distance from irrigation ditch. The TOC, Nt and TOC/Nt ratio were all highest for soils collected from a depth of 0-10 cm and for those taken 25 m from the irrigation ditch. The research revealed that the HA molecules of soils collected from a depth of 0-10 cm had higher H/C ratios and spectrometric parameters and lower values of the ω parameter and HIL/HOB ratio than those from deeper layers. This indicates that the degree of maturity of HAs increases with depth. On the basis of the obtained atomic ratios (H/C, O/C, O/H), ω parameter and spectrometric properties (A 2/6 , A 4/6 and ΔlogK), the degree of maturity for HAs molecules was highest in the soil samples taken furthest from the irrigation ditch. The results indicate that relatively high-stability HAs were formed by the processes of transformation of the organic matter of the mineral meadow soils.

show abstract

“…Strong binding of mercury in soils is due to its high chemical affinity for organic matter [4,6,18,[49][50][51]. Peatland drainage (very frequent in case of utilisation of organic soils) stimulates aerobic organic matter decomposition, production of dissolved organic matter (DOM) and humic substances (HS) [52][53][54][55]. Dissolved organic matter affects mercury speciation, mobility and toxicity in the environment [8,9,19,50,[56][57][58][59].…”

Section: Introductionmentioning

confidence: 99%

“…Peatland drainage for farming purposes is a major cause of fen peatland degradation in the temperate climate [69]. Peat degradation is followed by the formation of a murshic horizons which has an aggregate structure and a greater quantity of humic substances [52,54,68,70]. The process of peatland drainage is progressing due to climatic change which contributes to a negative water balance that is unfavourable for peatland development [71,72].…”

Section: Introductionmentioning

confidence: 99%

Distribution of Mercury in Drained Peatlands as the Effect of Secondary Transformation of Soil Organic Matter

et al. 2023

Self Cite

View full text Add to dashboard Cite

Peat organic soils play a major role in the accumulation of soil organic matter (SOM) and the mercury (Hg) cycle. Large mercury resources in peatlands can be a source of methylmercury for many decades and centuries, even if deposition is significantly reduced. The organic matter of peatland soils drained for agricultural use is subject to secondary transformation, which may affect the accumulation and resources of mercury. The aim of our work is to assess the secondary transformation of organic matter in the soils of drained peatlands of the temperate climate zone and to examine whether it affects mercury resources and profile distribution in organic soils. Field research was conducted in peatlands located in eastern Poland. In the present study, evaluation of secondary transformations occurring after drainage was based on observations of soil morphological characteristics, physical and chemical properties as well as fractional composition of organic matter of the identified soil horizons (to depth 70 cm). Standard cold vapor atomic absorption spectrometry (CV-AAS) was used to measure the total mercury content. In our research, we found a significant effect of the secondary transformation of organic matter occurring in drained peatlands of the temperate climate zone on the total mercury content and stock in soils. The highest content and differentiation of mercury occurred in murshic horizons (up to a maximum depth of 43 cm). The average mercury content of the distinguished soil horizons is grouped in the following series (in μg kg−1): M1 (212.0) > M2 (182.8) > M3 (126.3) > Pt (84.9). The mercury stock, up to a depth of 70 cm in the tested soils, ranged from 17.5 to 39.6 mg m−2. As much as 82.2% of soil mercury was found in the upper murshic horizons. We found strong correlations between soil properties characteristically variable in the secondary transformation process and total mercury content. The increased content of humic substances in murshic horizons caused a significant increase in the total mercury content. Our research is of great importance for soil monitoring, as the amount of determined mercury was greatly influenced by the depth of sampling (up to 25 cm). The results of the research should be taken into account when planning the restoration of peatlands of the temperate climate zone. There is a potential risk that elevated mercury concentrations in the upper murshic horizons may be a source of methylmercury for a long period of time. In peat soils with a high concentration of mercury, the risk of contamination with this toxic metal should be determined before re-irrigation.

show abstract

Fractional Composition of Organic Matter and Properties of Humic Acids in the Soils of Drained Bogs of the Siedlce Heights in Eastern Poland

Cited by 10 publications

References 8 publications

Estimation of Dissolved Organic Carbon in River Flows and Identification of the Relationships Between Peat Humic Fractions and Physicochemical Qualities

Estimation of Dissolved Organic Carbon in River Flows and Identification of the Relationships Between Peat Humic Fractions and Physicochemical Qualities

Humic acids in permanent grasslands of the Czersk Meadows Complex, north Poland

Distribution of Mercury in Drained Peatlands as the Effect of Secondary Transformation of Soil Organic Matter

Contact Info

Product

Resources

About