Department of Geochemistry is occupied with research of composition, structure and properties of rocks including coal and derivatives using methods of surface chemistry, geochemistry and petrology. There are studies in processes of origin and accumulation of organic substance in rocks and in characteristics of biological sources and palaeo- environment. Products of not perfect combustion in relation with contamination of the environment and problems of carbon dioxide as a greenhouse gas are studied.
Projekt ICCOP - Interlaboratory Study of D7708-Standard Test Method for Microscopical Determination of the Reflectance of Vitrinite Dispersed in Sedimentary Rocks, Investigator: P.C. Hackley, Co-worker I. Sykorova and other 26 co-investigators from 15 countries
Project ICCOP - New Handbook of Coal and Organic Petrology Editorial Board,
investigators: I. Sykorova, I. Suarez Ruiz, K. Christanis
Results
Proximal ejecta of the putative parent impact crater for Australasian tektites at the Bolaven Plateau
2024
Proximal ejecta of the putative parent impact crater for Australasian tektites at the Bolaven Plateau
2024
Publication: Jiří Mizera, Vladimír Strunga (2024): Proximal ejecta of the putative parent impact crater for Australasian tektites at the Bolaven Plateau. Proceedings of the National Academy of Sciences 121, e2400122121. doi.org/10.1073/pnas.2400122121
Image
Map showing distribution of the diamicton (circles with thickness in the legend) and lava flows on and around BP. Triangles indicate lavas with 40Ar-39Ar ages older than or roughly contemporaneous with the AAT impact; their color indicates alkaline (red) or tholeiitic (white) basalts. The map has been constructed by merging maps in figures 7 and S7 from ref. 1, and complemented with age and composition data from supplements in ref. 2.
Jurassic Park approached: a coccid from kimmeridgian cheirolepidiacean Aintourine Lebanese amber
2024
With the exception of a fly and a mite from the Triassic of Italy, all Mesozoic amber arthropods are from the Cretaceous. Late Jurassic Lebanese amber from Aintourine revealed a completely preserved adult coccid male (wing length 0.8 mm), Jankotejacoccus libanogloria gen. et sp. n., the earliest record of a plant sucking scale insect. Associated plant material included the cheirolepidiaceans Protopodocarpoxylon, Brachyphyllum and Classostrobus, plus Classopolis pollen, suggesting a forested temporary swamp habitat with ferns, tree ferns, water ferns, tall araucarian and ginkgoacean trees and shrubs. (Sub)tropic lateritic soil with vegetation debris underwent incomplete microbial decomposition in an anoxic water environment of peat swamp development. Strata-associated marine organisms support the Kimmeridgian age revealed by zircons. The discovery opens a new field of research in Jurassic amber fossils.
Publication: P. Vršanský, H. Sendi, J. Kotulová, J. Szwedo, M. Havelcová, H. Palková, L. Vršanská, J. Sakala, Ľ. Puškelová, M. Golej, A. Biroň, D. Peyrot, D. Quicke, D. Néraudeau, P. Uher, S. Maksoud, D. Azar, 2024. Jurassic Park approached: a coccid from kimmeridgian cheirolepidiacean Aintourine Lebanese amber. National Science Review, nwae200. https://doi.org/10.1093/nsr/nwae200
Image
Figure: First Jurassic insect from amber (Kimmeridgian Aintourine, Lebanon). (A) Locality and its 708 surrounding (see MM). (B) rough and prepared samples in UV and white light – from the same rock piece 709 as the holotype. (C and E) details of the insect inclusion Jankotejacoccus libanogloria Szwedo, Azar et 710 Sendi, sp. n., holotype, SNM Z 40023A and syninclusions. (D) pollen (SP-33219-1.1-4): upper row, 711 spores of a tree fern affiliated to Cyatheaceae/ Dicksoniaceae (2x Cyathidites spp., Deltoidospora sp.);
Evolution of palaeoclimate, palaeoenvironment and vegetation in Central Europe during the Miocene Climate Optimum.
2023
The studied parastratotype profile of the regional Carpathian foreland (late Burdigalien) in the Hevlín quarry indicates the existence of a warm-temperate to subtropical palaeoclimate with a zonal vegetation cover of subtropical deciduous evergreen forest and warm-temperate to subtropical mixed mesophytic forest. These findings are consistent with global trends (high temperatures and high sea level) and suggest the occurrence of relatively widespread wet conditions during the Miocene climatic optimum. The result was achieved in collaboration with the Faculty of Science of Charles University Prague, the Faculty of Science of Masaryk University Brno, the University of Bonn and Geological Institute of the CAS.
Publication: F. Scheiner, M. Havelcová, K. Holcová, N. Doláková, S. Nehyba, L. Ackerman, J. Trubač, Š. Hladilová, J. Rejšek, T. Utescher, 2023: Evolution of palaeoclimate, palaeoenvironment and vegetation in Central Europe during the Miocene Climate Optimum. Palaeogeography, Palaeoclimatology, Palaeoecology 611, 111364, doi.org/10.1016/j.palaeo.2022.111364
Image
Fig. A schematic simplified model of the reconstructed palaeoenvironment at the Hevlín locality. Positions of the analysed sections within the depositional system are indicated by white columns
Microporous carbon foams: The effect of nitrogen-doping on CO2 capture and separation via pressure swing adsorption
2023
Publication: M. Vorokhta, M. I. M. Kusdhany, D. Vöröš, M. Nishihara, K. Sasaki, S.M., 2023. Microporous carbon foams: The effect of nitrogen-doping on CO2 capture and separation via pressure swing adsorption. Chemical Engineering Journal 471, 144524 https://doi.org/10.1016/j.cej.2023.144524
Formation of Australasian tektites from gravity and magnetic indicators.
2023
Karimi, K., Kletetschka, G., Mizera, J., Meie, V., 2023. Formation of Australasian tektites from gravity and magnetic indicators. Scientific Reports 13, 12868. https://doi.org/10.1007/s10967-022-08692-5
Diversity of the terpene synthesis in the Thuja species – a comparative chemotaxonomic study.
2023
Malhocká, A., Švábová, M., 2023. Diversity of the terpene synthesis in the Thuja species – a comparative chemotaxonomic study. Biochemical systematics and ekology 110, 104703. https://doi.org/10.1016/j.bse.2023.104703
Activated three-dimensionally ordered micromesoporous carbons for CO2 capture
2023
Publication: M. Vorokhta, J. Nováková, M. Dopita, I. Khalakhan, V. Kopecký Jr., M. Švábová, 2023. Activated three-dimensionally ordered micromesoporous carbons for CO2 capture. Materials Today Sustainability 24, 100509. https://doi.org/10.1016/j.mtsust.2023.100509
Oxygen determination in the Ti certified reference material ERM-EB090b by instrumental photon activation analysis
2023
Publication: Mizera, J., Krausová, I., Chvátil, D., Olšanský, V., 2023. Oxygen determination in the Ti certified reference material ERM-EB090b by instrumental photon activation analysis. Journal of Radioanalytical and Nuclear Chemistry doi: 10.1007/s10967-023-09260-1
A chemotaxonomic analysis of terpenes variation in Metasequoia glyptostroboides and Sequoiadendron giganteum resins
2023
Malhocká, A., Švábová, M., 2023. A Chemotaxonomic Analysis of Terpenes Variation in Metasequoia glyptostroboides and Sequoiadendron giganteum resins. Journal of Essential Oil Bearing Plants 26. https://doi.org/10.1080/0972060X.2023.2280139
New Insights into the Internal Structures and Geotechnical Rock Properties of the Giant San Andrés Landslide, El Hierro Island, Spain
2023
Publication: Klimeš J., Hussain Y., Mreyen A.S., Cauchie L., Schlögel R., Piroton V., Petružálek M., Blahůt J., René M., Meletlidis S., Havenith H.B., 2023. New insights into internal structures and geotechnical rock properties of the giant San Andrés landslide, El Hierro island, Spain. Remote Sensing 15, 1627, 1–22. https://doi.org/10.3390/rs15061627
The thermal stability of carbon materials in the air: Quantitative structural investigation of thermal stability of carbon materials in air
2023
G. Sádovská, P. Honcová, J. Morávková, I. Jirka, M. Vorokhta, R. Pilař, J. Rathouský, D. Kaucký, E. Mikysková, P. Sazama, 2023. The thermal stability of carbon materials in the air: Quantitative structural investigation of thermal stability of carbon materials in air. Carbon 206, 211-225. https://doi.org/10.1016/j.carbon.2023.02.042
Natural bitumen hosted uranium mineralization: stability of the radiogenic system.
2023
Strunga, V., Sihelská, K., Lorinčík, J., Holá, M., Krausová, I., Goliáš, V., Čurda, M., Mizera, J., 2023. Natural bitumen hosted uranium mineralization: stability of the radiogenic systém. Journal of Radioanalytical and Nuclear Chemistry 332, 1597–1606. https://doi.org/10.1007/s10967-022-08692-5
Biochar as an effective material for acetone sorption and the effect of surface area on the mechanism of sorption
2023
Švábová M., Bičákova O., Vorokhta M., 2023. Biochar as an effective material for acetone sorption and the effect of surface area on the mechanism of sorption. Journal of Environmental Management 348, 119205. https://doi.org/10.1016/j.jenvman.2023.119205
Mercury Occurrence and Speciation in Sediments from Hard Coal Mining in Czechia.
2023
Publication: Vöröš D., Baizán P. D., Slavíček K., Díaz-Somoano M., Geršlová E., 2023. Mercury Occurrence and Speciation in Sediments from Hard Coal Mining in Czechia. Journal of Hazardous Materials 459, 132204. https://doi.org/10.1016/j.jhazmat.2023.132204
Microporous carbon foams: The effect of nitrogen-doping on CO2 capture and separation via pressure swing adsorption
2023
M. Vorokhta, M. I. M. Kusdhany, D. Vöröš, M. Nishihara, K. Sasaki, S.M., 2023. Microporous carbon foams: The effect of nitrogen-doping on CO2 capture and separation via pressure swing adsorption. Chemical Engineering Journal 471, 144524. https://doi.org/10.1016/j.cej.2023.144524
Formation of Australasian tektites from gravity and magnetic indicators
2023
Karimi, K., Kletetschka, G., Mizera, J., Meie, V., 2023. Formation of Australasian tektites from gravity and magnetic indicators. Scientific Reports 13, 12868. https://doi.org/10.1007/s10967-022-08692-5 Q2
Diversity of the terpene synthesis in the Thuja species – a comparative chemotaxonomic study
2023
Malhocká, A., Švábová, M., 2023. Diversity of the terpene synthesis in the Thuja species – a comparative chemotaxonomic study. Biochemical systematics and ekology 110, 104703. https://doi.org/10.1016/j.bse.2023.104703
A chemotaxonomic analysis of terpenes variation in Metasequoia glyptostroboides and Sequoiadendron giganteum resins
2023
Malhocká, A., Švábová, M., 2023. A Chemotaxonomic Analysis of Terpenes Variation in Metasequoia glyptostroboides and Sequoiadendron giganteum resins. Journal of Essential Oil Bearing Plants 26. https://doi.org/10.1080/0972060X.2023.2280139
Natural bitumen hosted uranium mineralization: stability of the radiogenic system
2023
Strunga, V., Sihelská, K., Lorinčík, J., Holá, M., Krausová, I., Goliáš, V., Čurda, M., Mizera, J., 2023. Natural bitumen hosted uranium mineralization: stability of the radiogenic systém. Journal of Radioanalytical and Nuclear Chemistry 332, 1597–1606. https://doi.org/10.1007/s10967-022-08692-5
The thermal stability of carbon materials in the air: Quantitative structural investigation of thermal stability of carbon materials in air
2023
G. Sádovská, P. Honcová, J. Morávková, I. Jirka, M. Vorokhta, R. Pilař, J. Rathouský, D. Kaucký, E. Mikysková, P. Sazama, 2023. The thermal stability of carbon materials in the air: Quantitative structural investigation of thermal stability of carbon materials in air. Carbon 206, 211-225. https://doi.org/10.1016/j.carbon.2023.02.042
Evolution of palaeoclimate, palaeoenvironment and vegetation in Central Europe during the Miocene Climate Optimum
2023
F. Scheiner, M. Havelcová, K. Holcová, N. Doláková, S. Nehyba, L. Ackerman, J. Trubač, Š. Hladilová, J. Rejšek, T. Utescher, 2023. Evolution of palaeoclimate, palaeoenvironment and vegetation in Central Europe during the Miocene Climate Optimum. Palaeogeography, Palaeoclimatology, Palaeoecology 611, 111364. https://doi.org/10.1016/j.palaeo.2022.111364
Chemical character and structure of uraniferous bitumens (Vrchlabí, Czech Republic)
Neutron Activation Analysis in Urban Geochemistry: Impact of Traffic Intensification after Opening the Blanka Tunnel Complex in Prague
2022
Mizera J., Havelcová M., Machovič V., Borecká L., Vöröš D., 2022. Neutron Activation Analysis in Urban Geochemistry: Impact of Traffic Intensification after Opening the Blanka Tunnel Complex in Prague. Minerals 12, 281. DOI: doi.org/10.3390/min12030281
Late Carboniferous palaeodepositional changes recorded by inorganic proxies and REE data from the coal-bearing strata: An example on the Czech part of the Upper Silesian Coal basin (USCB)
Palaeo-thermal history of the Blanice Graben (the Bohemian Massif, Czech Republic): The origin of anthracite in a late-Variscan strike-slip basin
2022
Suchý V., Zachariáš J., Sýkorová I., Kořínková D., Pešek J., Pachnerová-Brabcová, K., Qingyong Luo, Filip, J., Světlík, I., 2022. Paleothermal history of the Blanice Graben (the Bohemian Massif, Czech Republic): The origin of anthracite in a late-Variscan strike-slip basin. International Journal of Coal Geology, 263, 104, 104129, 1-23. doi.org/10.1016/j.coal.2022.104129
Distinction between consecutive construction phases by combined microscopic study and quantitative pore space analysis: Case study of Horn's Bastion, Riga Castle (Latvia)
2022
Rasina M., Lusens M., Racek M., Přikrylová J., Weishauptová Z., Řimnáčová D., Přikryl R., 2022. Distinction between consecutive construction phases by combined microscopic study and quantitative pore space analysis: Case study of Horn’s Bastion, Riga Castle (Latvia), Journal of Cultural Heritage, Volume 57, September–October 2022, Pages 88-96. DOI: doi.org/10.1016/j.culher.2022.08.004
Free-Blockage Mesoporous Silica Nanoparticles Loaded with Cerium Oxide as ROS-Responsive and ROS-Scavenging Nanomedicine
Characterization of gas diffusion layer transport properties by limiting current approach
2022
Yakovlev Y.V., Rodríguez M.G., Lobko Y.V., Vorokhta M., Kúš P., Matolínová I., Matolín V., 2022. Characterization of gas diffusion layer transport properties by limiting current approach. Electrochimica Acta, Volume 404, February 2022, DOI: doi.org/10.1016/j.electacta.2021.139755
Investigation of Accessory Minerals from the Blatná Granodiorite Suite, Bohemian Massif, Czech Republic
2022
René M., 2022. Investigation of accessory minerals from the Blatná granodiorite suite, Bohemian Massif, Czech Republic. In: René M. (ed.) Mineralogy, IntechOpen Ltd., London, 165–185. DOI: 10.5772/intechopen.102628
Geology and Petrography of Uraniferous Bitumens in Permo-Carboniferous Sediments (Vrchlabí, Czech Republic)
2022
Publication: Havelcová M., Sýkorová I., René M., Mizera J.,Coubal M., Machovič V., Strunga V., Goliáš V., (2022): Geology and Petrography of Uraniferous Bitumens in Permo-Carboniferous Sediments (Vrchlabí, Czech Republic). Minerals 12, 544. DOI: doi.org/10.3390/min12050544
