Category: Solid Combustible Minerals

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CHARACTERISTICS OF THE DISTRIBUTION OF CHEMICAL ELEMENTS IN THE VERTICAL SECTION OF PEAT USING X-RAY FLUORESCENCE ANALYSIS (the Gonchary deposit, Lviv Region)

Home > Archive > No. 3–4 (191–192) 2023 > 45–60

Geology & Geochemistry of Combustible Minerals No. 3–4 (191–192) 2023, 45–60

https://doi.org/10.15407/ggcm2023.191-192.045

Myroslava YAKOVENKO1, Yurii KHOKHA2

Institute of Geology & Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: 1myroslavakoshil@ukr.net; 2khoha_yury@ukr.net

Abstract

This article discusses the features of peat analysis using X-ray fluorescence (XRF) analysis in order to study its qualitative and quantitative elemental composition, including heavy metals. The distribution of chemical elements is an indicator of various processes in geochemical and biological systems, by using of which it is possible to reproduce the conditions of accumulation of mineral deposits. This analysis is an important component of a comprehensive study of peat formation features, the environmental friendliness of peat extraction, and also for determining the suitability of peat for industrial use.

We analyzed the content of chemical elements in peat samples taken at different depths using a portable X-ray fluorescence spectrometer. The article considers the main characteristics of the spectrum of individual elements, depending on the atomic number.

In order to establish the general regularity of the distribution of 20 chemical elements in peat samples, we performed a mathematical and statistical analysis of the obtained data: calculation of the main statistical characteristics of chemical elements distribution (average, minimum and maximum values, median, variance, coefficient of variation, etc.), calculation of correlation matrices, selection of typomorphic geochemical associations of chemical elements using cluster and factor analyses. We singled out two types of factors that are decisive and influence the accumulation of chemical elements in the investigated peat: “organogenic” and “natural” (lithological), which are decisive, and a secondary factor –anthropogenic.

We compared the obtained results with the average values obtained from the results of spectral semi-quantitative analysis of peat ash samples taken at depths of 0.1–7 m in the same region. We evaluated the possibility and efficiency of using a portable X-ray fluorescence spectrometer for the analysis of the macro- and microelement composition of peats with different ash content.

It has been established that portable X-ray fluorescence analysis is a powerful tool for fast and high-quality elemental analysis of peat, and the range of its application depends on specific research goals and tasks.

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Keywords

peat, X-ray fluorescence spectroscopy, XRF, microelement composition, spectrum interpretation

Referenses

Galenko, V. G., Semchuk, S. A., & Ekimova, N. A. (1974). Sostavleniye geologo-ekonomicheskikh obzorov po osnovnym torfodobyvayushchim oblastyam USSR (Lvovskaya oblast) [Research report]. Lvov: Fondy DP “Zakhidukrheolohiia”. [in Russian]

Kaiser, B., & Wright, A. (2008). Draft Bruker XRF spectroscopy user guide: Spectral interpretation and sources of interference. BRUKER, Madison, WI.

Shand, C. A., & Wendler, R. (2014). Portable X-ray fluorescence analysis of mineral and organic soils and the influence of organic matter. Journal of Geochemical Exploration, 143, 31–42. https://doi.org/10.1016/j.gexplo.2014.03.005

Van Loon, L. L., McIntyre, N. S., Bauer, M., Sherry, N. S., & Banerjee, N. R. (2019). Peakaboo: Advanced software for the interpretation of X-ray fluorescence spectra from synchrotrons and other intense X-ray sources. Software Impacts, 2, 100010. https://doi.org/10.1016/j.simpa.2019.100010

Yakovenko, M. (2022). Heokhimichni osoblyvosti nahromadzhennia i mihratsii Strontsiiu v torfakh Lvivskoi oblasti. Heolohiia i heokhimiia horiuchykh kopalyn, 1–2(187–188), 58–70. https://doi.org/10.15407/ggcm2022.01-02.058 [in Ukrainian]

Yakovenko, M., Khokha, Yu., & Liubchak, O. (2022). Heokhimichni osoblyvosti nakopychennia i mihratsii vazhkykh metaliv u torfakh Lvivskoi oblasti. Visnyk of V. N. Karazin Kharkiv National University, Series “Geology. Geography. Ecology”, 56, 105–121. https://doi.org/10.26565/2410-7360-2022-56-07 [in Ukrainian]

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STUDY OF LOW-AMPLITUDE TECTONICS OF COAL FIELDS BY GEOPHYSICAL METHODS

Home > Archive > No. 1–2 (189–190) 2023 > 26–40

Geology & Geochemistry of Combustible Minerals No. 1–2 (189–190) 2023, 26–40

https://doi.org/10.15407/ggcm2023.189-190.026

Ihor KUROVETS, Ihor HRYTSYK, Oleksandr PRYKHODKO, Pavlo CHEPUSENKO, Stepan MYKHALCHUK, Svitlana MELNYCHUK, Roman-Danylo KUCHER

Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: igggk@mail.lviv.ua

Abstract

An analysis was made as to the usage of geological-geophysical methods for studying of low-amplitude tectonic dislocations in coal-enclosing massifs. As a result of geophysical researches conducted at coal fields, mine fields and mine workings of the Lviv-Volyn Coal Basin, the methods of field observations by means of natural electromagnetic and electric fields were worked and their results were processed for prediction and diagnostics of tectonic dislocations with a break of continuity and zones of unstressed state. To raise the efficiency of the methods of electromagnetic fields it is recommended to carry out measurements at wide frequency range (from 5 to 50 hz) with orientation of the antenna according to the world sides (azimuthal surveying) and at narrow frequency range (5; 12.5; 17 khz) with the southern orientation of the antenna (frequency sensing). According to azimuthal surveying one can calculate the vector of maximum intensity of electromagnetic radiation. It was ascertained that over distinctive dislocation one can observe the variation in the direction and absolute value of vectors. Displacement of the anomaly of electromagnetic radiation intensity at different frequency range by profile indicates the direction of dipping of the area of displacement of dislocations with a break of continuity. The method of natural electromagnetic impulse field of the Earth fixes both the dislocations, distinguishes by geological-geophysical methods before, and new low-amplitude dislocations and stressed zones.Tectonic dislocations, that are displayed only in Paleozoic deposits, are distinguished by contrast anomalies of electromagnetic radiation in electromagnetic field, but dislocations with a break of continuity that cut the Mesozoic thickness and in most cases are accompanied by zones of rock fracturing in the Cretaceous deposits: by wide destructive anomalies. Plots over worked-out lavas with stressed deformational state are characterized by strongly differential abnormal values of the intensity of natural impulse electromagnetic field of the Earth. The method of natural electric field allows us to detect zones with water-bearing fracturing rocks in the upper part of the geological section. Methods of natural impulse electromagnetic field of the Earth and natural electric field may be used both independently and in the complex with other geophysical methods for detection and tracing of tectonic dislocations and dynamically-unstressed zones. Thus, the optimum apparatus-methodical complex for detection and diagnostics of low-amplitude dislocations with a break of continuity of coal-enclosing series by electromagnetic methods (NIEMF, NEF) was formed and effective methods of field observations, processinf and interpretation of data were developed.

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Keywords

low-amplitude tectonics, natural electric field, impulse electromagnetic field of the Earth, coal-bearing rocks, geophysical profiles

Referenses

Kurovets, I., Hrytsyk, I., Chepusenko, P., Mykhalchuk, S., & Prykhodko, O. (2019). Vyvchennia maloamplitudnoi tektoniky vuhilnykh rodovyshch metodamy elektromahnitnykh poliv. In Heofizyka i heodynamika: prohnozuvannia ta monitorynh heolohichnoho seredovyshcha: tezy VIII Mizhnarodnoi naukovoi konferentsii (Lviv, 24–26 veresnia 2019 r.) (pp. 92–94). Lviv. [in Ukrainian]

Kurovets, I. M., Zubko, O. S., Kosianenko, G. P., & Chepusenko, P. S. (2000). Diagnostics of physical state of hydrotechnical constructions of enterprises by electromagnetic methods. In 4th European coal conference (September 26–28, 2000, Ustron, Poland) (pp. 43–44). PIG.

Lysoon, S. O., Kurovets, I. M., & Prytulkа, G. I. (2000). New prognostification technology of low-amplitude tectonic dislocations of coal seams. In 4th European coal conference (September 26–28, 2000, Ustron, Poland) (p. 45). PIG.

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GEOCHEMICAL FEATURES OF STRONTIUM ACCUMULATION AND MIGRATION IN THE PEATS OF THE LVIV REGION

Home > Archive > No. 1–2 (187–188) 2022 > 58–70

Geology & Geochemistry of Combustible Minerals No. 1–2 (187–188) 2022, 58–70.

https://doi.org/10.15407/ggcm2022.01-02.058

Myroslava YAKOVENKO

Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: myroslavakoshil@ukr.net

Abstract

The article is devoted to the study of geochemical characteristics of the distribution, accumulation and migration of strontium in the lowland peats of the Lviv Region, both laterally and vertically, and to identify the main factors influencing the formation of its concentrations.

A significant uneven distribution of concentration, high dispersion and variability (coefficient of variation – 116.61, standard deviation – 564.11) of Sr in peats within deposits, districts and regions both with depth and area of distribution and high content indicators were established Sr relative to clarks of the lithosphere, soils, plant ash (CC relative to the lithosphere = 1.42; CC relative to soil clarks = 1.94; Сs relative to background values in the soils of Ukraine = 4.56; CK relative to clarks of terrestrial plants = 1.61).

The content of Sr in the peat of the Lviv Region ranges from 40–3190 mg/kg (average content 483.75 mg/kg, median content (background content) – 250 mg/kg), which is due to natural-climatic, geological, lithological, hydrogeochemical and anthropogenic factors.

The features of the distribution and the degree of concentration of Sr in the peatlands of the Lviv Region are mainly influenced by the chemical-mineralogical-petrographic composition of the bedrocks of the wear area during their weathering; terrain, climatic, geomorphological, tectonic and hydrogeological conditions of the area, which determine the of the weathering processes of the rocks in the wear areas, the degree of transformation of terrigenous material in the weathering processes, the rate of accumulation of biomass and the rate of its decomposition; features of water and mineral nutrition of the peatland.

High concentrations of strontium in the peat of the Lviv Region reflect the local regional processes of the concentration of the element in the mass of peat and may indicate the accumulation of Sr of both natural and anthropogenic origin in the upper layers of peat profiles. There is an enrichment of Sr in the upper intervals of deposits (0–1 m) of deposits in the northeastern part of the Lviv Region (Malopoliska peat region) is observed.

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Keywords

peat, peat deposit, strontium, microelement composition, concentration, Clark concentration, accumulation, migration

Referenses

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Boiko, T. I. (1995). Heokhimiia sirky ta strontsiiu v zoni tekhnohenezu sirkodobuvnykh pidpryiemstv Peredkarpattia [Extended abstract of Candidateʼs thesis]. Instytut heolohii i heokhimii horiuchykh kopalyn NAN Ukrainy. Lviv. [in Ukrainian]

Bowen, H. J. M. (1979). Environment Chemistry of the Elements. London; New-York; Toronto; Sydney; San-Francisco: Academic Press.

Buchynska, I., Lazar, H., Savchynskyi, L., & Shevchuk, O. (2013). Umovy utvorennia vuhillia plasta n8 Lvivsko-Volynskoho baseinu za heokhimichnymy danymy. Heolohiia i heokhimiia horiuchykh kopalyn, 1–2, 32–41. [in Ukrainian]

Burkov, V. V., & Podporina, Ye. K. (1962). Strontsii. Trudi Instituta mineralogii, geokhimii i kristallografii redkikh metallov, 12, 180. [in Russian]

Chertko, N. K., & Chertko, E. N. (2008). Geokhimiya i ekologiya khimicheskikh elementov. Minsk: Izdatelskii tsentr BGU. [in Russian]

For, G., & Dzhons, L. (1974). Izotopnii sostav strontsiya v rossipyakh Krasnogo morya. In Sovremennoe gidrotermalnoe rudootlozhenie (pp. 141–148). Moskva: Mir. [in Russian]

Ivantsiv, O. Ye., & Uzhenkov, G. A. (1984). Geokhimicheskie osobennosti torfyano-bolotnogo litogeneza Prikarpatya. In Osadochnie porodi i rudi (pp. 215–220). Kiev: Naukova dumka. [in Russian]

Kabata-Pendias, A., & Pendias, X. (1989). Mikroelementi v pochvakh i rasteniyakh. Moskva: Mir. [in Russian]

Klos, V. R., Birke, M., Zhovynskyi, E. Ya., Akinfiiev, H. O., Amaiyukeli, Yu. A., & Klamens, R. (2012). Rehionalni heokhimichni doslidzhennia gruntiv Ukrainy v ramkakh mizhnarodnoho proektu z heokhimichnoho kartuvannia silskohospodarskykh ta pasovyshchnykh zemel Yevropy (GEMAS). Poshukova ta ekolohichna heokhimiia, 1, 51–66. [in Ukrainian]

Kushnir, S. V., Shuter, Ya. N., Pankiv, R. II., & Srebrodolskii, B. I. (1982). Osnovnie formi nakhozhdeniya strontsiya v sernikh rudakh Predkarpatya. In Geologiya i geokhimiya nemetallicheskikh iskopaemikh (pp. 102–108). Kiev: Naukova dumka. [in Russian]

Kushnir, S. V., Vivchar, O. I., & Boiko, T. I. (1995). Deiaki heokhimichni naslidky zastosuvannia “vapniakovo-sirchanoho dobryva”. Heolohiia i heokhimiia horiuchykh kopalyn, 3–4(88–89), 27–35. [in Ukrainian]

Kyrylchuk, A. A., & Bonishko, O. S. (2011). Khimiia gruntiv. Osnovy teorii i praktykum. Lviv: LNU imeni Ivana Franka. [in Ukrainian]

Lazar, H. (2017). Osoblyvosti poshyrennia strontsiiu u vuhilli plasta v6 Lvivsko-Volynskoho baseinu. Heolohiia i heokhimiia horiuchykh kopalyn, 1–2(170–171), 86. [in Ukrainian]

Noll, W. (1931). Über die Bestimmung des Strontiums in der Mineral- und Gesteinsanalyse. Zeitschrift für anorganische und allgemeine Chemie, 199(1), 193–208. https://doi.org/10.1002/zaac.19311990121

Odum, H. T. (1951). Notes on the Strontium Content of Sea Water, Celestite Radiolaria, and Strontianite Snail Shells. Science, 114(2956), 211–213. https://doi.org/10.1126/science.114.2956.211

Orru, H., & Orru, M. (2006). Sources and distribution of trace elements in Estonian peat. Global and Planetary Change, 53(4), 249–258. https://doi.org/10.1016/j.gloplacha.2006.03.007

Pampura, V. D., Sandimirova, G. P., & Brandt, S. B. (1991). Geokhimiya i izotopnii sostav strontsiya v gidrotermalnikh sistemakh. Nauka, Sibirskoe otdelenie. [in Russian]

Sklyarov, Ye. V., Barash, I. G., Bulanov, V. A., Gladkochub, D. P., Donskaya, T. V., Ivanov, A. V., Letnikova, Ye. F., Mironov, A. G., & Sizikh, A. I. (2001). Interpretatsiya geokhimicheskikh dannikh. Moskva: Intermetinzhiniring. [in Russian]

Sprynskyi, M. I. (1999). Litii, rubidii, tsezii i strontsii u pidzemnykh vodakh Karpatskoi naftohazonosnoi provintsii [Extended abstract of Candidateʼs thesis]. Instytut heolohii i heokhimii horiuchykh kopalyn NAN Ukrainy. Lviv. [in Ukrainian]

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Voitkevich, G. V., Miroshnikov, A. Ye., Povarennikh, A. S., & Prokhorov, V. G. (1970). Kratkii spravochnik po geokhimii. Moskva: Nedra. [in Russian]

Yakovenko, M., Khokha, Yu., & Liubchak, O. (2022). Heokhimichni osoblyvosti nakopychennia i mihratsii vazhkykh metaliv u torfakh Lvivskoi oblasti. Visnyk Kharkivskoho natsionalnoho universytetu imeni V. N. Karazina, ceriia “Heolohiia. Heohrafiia. Ekolohiia”, 56, 105–121. https://doi.org/10.26565/2410-7360-2022-56-07 [in Ukrainian]

Yakovenko, M., Khokha, Yu., & Liubchak, O. (2021). Rozpodil khimichnykh elementiv u nyzynnykh torfakh Lvivskoi oblasti. Heolohiia i heokhimiia horiuchykh kopalyn, 3–4(185–186), 65–72. https://doi.org/10.15407/ggcm2021.03-04.065 [in Ukrainian]

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DISTRIBUTION OF CHEMICAL ELEMENTS IN PEAT DEPOSITS OF THE LVIV REGION

Home > Archive > No. 3–4 (185–186) 2021 > 65–72

Geology & Geochemistry of Combustible Minerals No. 3–4 (185–186) 2021, 65–72.

https://doi.org/10.15407/ggcm2021.03-04.065

Myroslava YAKOVENKO1, Yury KHOKHA2, Oleksandr LYUBCHAK3

1, 2, 3 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; 3lubchak1973@ukr.net

Abstract

The article is devoted to the study and interpretation of the content of chemical elements in peats of Lviv Region. It is known that peat has a pronounced ability to physical sorption and chemisorption, as a result it is able to accumulate a significant amount of metals, including dangerous – heavy, toxic and radioactive. Peat is used as an energy raw material, in recent years – as a raw material for the chemical and pharmaceutical industries. Thus, this geochemical research have scientific and applied importance for a wide range of industries and for environmental monitoring. The range of peat applications directly depends on the concentration of trace elements. The basic geochemical characteristics of peat lowland type in Lviv Region was found out. In general, the content of elements in the studied peat has concentrations lower than сlarkes in comparison with the lithosphere, soils and terrestrial plants. Lithophilic Sr, Yb, Be, Ba, siderophilic Mo, Co, and chalcophilic Pb, Ag are actively concentrated in comparison with clarkes in the lithosphere, soils, plant ashes and relative to background values in the soils of Ukraine. According to the results of a comprehensive analysis of the content of microelements in lowland peats of Lviv Region, three elements with high concentration were identified – Molybdenum, Strontium and Lead.Significant uneven distribution of microelement concentration with depth and area of distribution and high indicators of Mo, Yb, Sr, Be, Co, Ag, Ba, Pb relative to clarkes of lithosphere, soils, plant ash, etc. have been established. Comparison of patterns of accumulation and scattering of elements in peat with lithosphere, soils and terrestrial plants shows that peat is characterized by its own specific set of storage elements, there are specific patterns of accumulation and scattering of elements. Thus, peat has a clear geochemical structure that distinguishes them from mineral soils and lithosphere.

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Keywords

peat, microelement composition, concentration, clark concentration, accumulation

Referenses

Biletskyi, V. S. (2004). Mala hirnycha entsyklopediia (Vol. 1–3). Donetsk: Donbas. [in Ukrainian]

Bowen, H. J. M. (1979). Environment Chemistry of the Elements. London; New-York; Toronto; Sydney; San Francisco: Academic Press.

Bradys, Ye. M. (1973). Torfovo-bolotnyi fond URSR, yoho raionuvannia ta vykorystannia. Kyiv: Naukova dumka. [in Ukrainian]

Galenko, V. G., Semchuk, S. A., & Ekimova, N. A. (1974). Otchet po teme “Sostavlenie geologo-ekonomicheskikh obzorov po osnovnym torfodobyvayushchim oblastyam USSR” (L’vovskaya oblast’). L’vov: Fondy DP “Zakhidukrheolohiia”. [in Russian]

Klos, V. R., Birke, M., Zhovynskyi, E. Ya., Akinfiiev, H. O., Amaiyukeli, Yu. A., & Klamens, R. (2012). Rehionalni heokhimichni doslidzhennia gruntiv Ukrainy v ramkakh mizhnarodnoho proektu z heokhimichnoho kartuvannia silskohospodarskykh ta pasovyshchnykh zemel Yevropy (GEMAS). Poshukova ta ekolohichna heokhimiia, 1, 51–66. [in Ukrainian]

Kreshtapova, V. N. (1974). Metodicheskie rekomendatsii po otsenke soderzhaniya mikroelementov v torfyanykh mestorozhdeniyakh evropeiskoi chasti RSFSR. Moskva: Izd-vo Mingeo RSFSR. [in Russian]

Tyuremnov, S. N. (1976). Torfyanye mestorozhdeniya. Moskva: Nedra. [in Russian]

Voitkevich, G. V., Miroshnikov, A. E., Povarennykh, A. S., & Prokhorov, V. G. (1970). Kratkii spravochnik po geokhimii. Moskva: Nedra. [in Russian]

Yakovenko, M. B., Khokha, Yu. V., & Liubchak, O. V. (2020). Rozpodil molibdenu v nyzynnykh torfakh Lvivskoi oblasti. In Resursy pryrodnykh vod Karpatskoho perionu (Problemy okhorony ta ratsionalnoho vykorystannia): zbirnyk naukovykh statei XIKh mizhnarodnoi naukovo-praktychnoi konferentsii (Lviv, 8–9 zhovtnia 2020 r.) (pp. 210–214). Lviv. [in Ukrainian]

Yakovenko, M. B., Khokha, Yu. V., & Liubchak, O. V. (2019). Rozpodil Svyntsiu v nyzynnykh torfakh Lvivskoi oblasti. In Resursy pryrodnykh vod Karpatskoho perionu (Problemy okhorony ta ratsionalnoho vykorystannia): zbirnyk naukovykh statei XVIII mizhnarodnoi naukovo-praktychnoi konferentsii (Lviv, 26–27 travnia 2019 r.) (pp. 263–265). Lviv. [in Ukrainian]

Yakovenko, M. B., Khokha, Yu. V., & Lukʼianchuk, D. V. (2015a). Mikrokomponentnyi sklad torfiv Lvivskoi oblasti. In Novitni problemy heolohii: materialy naukovo-praktychnoi konferentsii, prysviachenoi 100-richchiu vid dnia narodzhennia V. P. Makrydina (Kharkiv, 21–23 travnia 2015 r.) (pp. 175–176). Kharkiv. [in Ukrainian]

Yakovenko, M. B., Khokha, Yu. V., & Lukʼianchuk, D. V. (2015b). Nakopychennia mikroelementiv u nyzynnykh torfakh Lvivskoi oblasti. In Fundamentalne znachennia i prykladna rol heolohichnoi osvity i nauky: materialy mizhnarodnoi naukovoi konferentsii, prysviachenoi 70-richchiu heolohichnoho fakultetu Lvivskoho natsionalnoho universytetu imeni Ivana Franka (Lviv, 7–9 zhovtnia 2015 r.) (pp. 238–239). Lviv. [in Ukrainian]

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PROSPECTS OF USING PEATS IN THE LVIV REGION FOR HUMATES EXTRACTION

Home > Archive > No. 1–2 (183–184) 2021 > 76–88

Geology & Geochemistry of Combustible Minerals No. 1–2 (183–184) 2021, 76–88.

https://doi.org/10.15407/ggcm2021.01-02.076

Myroslava YAKOVENKO1, Yury KHOKHA2, Oleksandr LYUBCHAK3

Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, e-mail: 1myroslavakoshil@ukr.net, 2khoha_yury@ukr.net, 3lubchak1973@ukr.net

Abstract

The paper briefly considers the problems of the Ukraine’s peat industry and identifies the reasons for its decline, including the low quality of peat as an energy source. We assume that the use of peat for briquetting will be stopped in the near future due to economic and political factors. On the other hand, peat can be a source of chemicals and their mixtures that have found application in agriculture and industry. It is known that the addition of sodium humates to the drilling mud improves its rheological properties and makes them environmentally safe, especially when passing through aquifers. We set a goal to determine the geological, technological and geochemical characteristics of peat in the Lviv Region, to establish its suitability for the humic acids extraction and to identify promising deposits for future processing. The study of the peats microelement composition of the Radekhiv district (Lviv Region) showed that the studied peats are not contaminated with heavy metals, as evidenced by the values of pollution indices. It is shown that the content of chemical elements in peats of Lviv Region is less than clarke in the lithosphere, soils and terrestrial plants. There is a tendency to scatter chalcophilic and most siderophilic elements, to a lesser extent lithophilic. Determining the yield of total and free humic acids testified to the possibility of using peat in the Lviv Region to extract humates. The studied samples were characterized by a high content of humic acids in terms of dry weight. Preliminary assessment of deposits suitability for peat extraction was performed according to the following parameters: field reserves, degree of decomposition, humus content and ash content. After constructing maps of these geochemical characteristic’s distribution, we have identified several of the most promising deposits in the Lviv Region: in the Kamyanka-Buzka district – Didylivske and Yarychivske deposits; in the Mykolayiv district – Verbizke, Saikivske, Demnyanske and Trostyanetske.

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Keywords

peat, humic substances, microelements, geochemical analysis, ash content, degree of decomposition.

Referenses

Bowen, H. J. M. (1979). Environment Chemistry of the Elements. London; New-York; Toronto; Sydney; San Francisco: Academic Press.

Galenko, V. G., Semchuk, S. A., & Ekimova, N. A. (1974). Sostavlenie geologo-ekonomicheskikh obzorov po osnovnym torfodobyvayushchim oblastyam USSR (L’vovskaya oblast’) (Vol. 1). [Research paper]. L’vov: L’vovskaya geologicheskaya ekspeditsiya. [in Russian]

Khokha, Yu. V., Yakovenko, M. B., & Lukianchuk, D. V. (2013). Heoloho-heokhimichni ta heotekhnolohichni osoblyvosti torfianykh rodovyshch Lvivskoi oblasti. Heolohiia i heokhimiia horiuchykh kopalyn, 3–4(164–165), 56–61. [in Ukrainian]

Klos, V. R., Birke, M., Zhovynskyi, E. Ya., Akinfiiev, H. O., Amaiyukeli, Yu. A., & Klamens, R. (2012). Rehionalni heokhimichni doslidzhennia gruntiv Ukrainy v ramkakh mizhnarodnoho proektu z heokhimichnoho kartuvannia silskohospodarskykh ta pasovyshchnykh zemel Yevropy (GEMAS). Poshukova ta ekolohichna heokhimiia, 1, 51–66. [in Ukrainian]

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