Home > Archive > No. 1–2 (197–198) 2025 > 75–90
Geology & Geochemistry of Combustible Minerals No. 1–2 (197–198) 2025, 75–90
https://doi.org/10.15407/ggcm2025.197-198.075
Myroslava YAKOVENKO1, Yurii KHOKHA2
Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: 1myroslavakoshil@ukr.net; 2khoha_yury@ukr.net
Abstract
The article presents the results of determining the quantitative content and geochemical features of the distribution (including depth distribution), accumulation, migration, and origin of Na, K, Li, Ca, and Ba mobile forms in peat from selected representative deposits and areas of the Lviv Region (Bilogorshcha, Honchary, Hamaliivka, Artyshchiv, Polonychna, Sknylivok), and identifying the main factors affecting the unevenness of their concentration. The analyses were performed using the flame spectrophotometry method with two low-temperature flame spectrophotometers: FP910 (PG Instruments) and FF-200 (Cole-Parmer, Jenway). This method is distinguished by its simplicity, speed, expressivity, high sensitivity, reliability, and relatively low equipment cost.
Mathematical and statistical processing of the quantitative characteristics of the distribution of Ca, Ba, Na, K, and Li mobile forms content in the studied peatlands of the Lviv Region was carried out using MS Excel 2019 and Statistica 12 software packages. Employing correlation (calculation and construction of correlation matrices and profiles), cluster, and factor (principal component method) analyses, the degree of dependence between variables and typomorphic geochemical associations of mobile forms of chemical elements in the researched environment were established. The values of the limits of local background fluctuations and the level of element content deviations were determined; the values of the concentration coefficients relative to the background (median) content were calculated.
The vertical distribution of Ca, Ba, Na, K, and Li mobile forms along the peat deposit profiles showed that the content of K and Na decreases with depth for all researched deposits, as well as Ca, Ba, and Li (except Honchary deposit). It was established that the vertical distribution of the studied elementsʼ mobile forms in peat deposits is characterized by maxima in the upper peat horizon and contact layers with mineral soil (0–40 cm), which is mainly due to biological accumulation and aeolian input. An exception is the uneven distribution of Ca, Ba, and Li in the Honchary peat deposit, where a significant enrichment with freshwater mollusk shells is observed, particularly at a depth of 80–120 cm.
Keywords
peat, mobile forms, elemental analysis, flame spectrophotometry
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