TY  - JOUR
AU  - Kasanin-Grubin, Milica
AU  - Hukić, Emira
AU  - Bellan, Michal
AU  - Bialek, Kamil
AU  - Bosela, Michal
AU  - Coll, Lluis
AU  - Czacharowski, Marcin
AU  - Gajica, Gordana
AU  - Giammarchi, Francesco
AU  - Gomoryova, Erika
AU  - del Rio, Miren
AU  - Dinca, Lucian
AU  - Đogo-Mracević, Svetlana
AU  - Klopci, Matija
AU  - Mitrović, Suzana
AU  - Pach, Maciej
AU  - Ranđelović, Dragana
AU  - Ruiz-Peinado, Ricardo
AU  - Skrzyszewski, Jerzy
AU  - Orlić, Jovana
AU  - Štrbac, Snežana
AU  - Stojadinović, Sanja
AU  - Tonon, Giustino
AU  - Tosti, Tomislav
AU  - Uhl, Enno
AU  - Veselinović, Gorica
AU  - Veselinović, Milorad
AU  - Zlatanov, Tzvetan
AU  - Tognetti, Roberto
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/578
AB  - Forests in Europe are currently not endangered by soil erosion. However, this can change with climate change or with intensified forest management practices. Using a newly established network of plots in beech forests across Europe, the aims of this study were to (i) distinguish soil properties and erodibility indices in relation to bedrock, (ii) determine geochemical properties and organic carbon (C-org) influencing erodibility, and (iii) assess the effect of soil depth on erodibility indices. Seventy-six soil samples from 20 beech forests were collected in 11 countries to quantify soil properties influencing erodibility indices: clay ratio, modified clay ratio, sodium adsorption ratio, and oxides ratio. The results indicate that the dominant soil properties, determined by bedrock, that correlate with forest soil erodibility indices are C-org, pH, electrical conductivity, calcium and sodium ions concentrations, total water-soluble cations, and the percentage of sand. According to the tested indices, soil susceptibility to erosion follows the order granite > andesite > sandstone > quartzite > limestone. Deeper soil horizons on granite are more susceptible to erosion than surface horizons are, but this is not the case for soils on limestones. In conclusion, forest management should consider the predisposition of different soil types to erosion.
PB  - Canadian Science Publishing, Ottawa
T2  - Canadian Journal of Forest Research
T1  - Soil erodibility in European mountain beech forests
EP  - 1855
IS  - 12
SP  - 1846
VL  - 51
DO  - 10.1139/cjfr-2020-0361
UR  - conv_928
ER  - 

@article{
author = "Kasanin-Grubin, Milica and Hukić, Emira and Bellan, Michal and Bialek, Kamil and Bosela, Michal and Coll, Lluis and Czacharowski, Marcin and Gajica, Gordana and Giammarchi, Francesco and Gomoryova, Erika and del Rio, Miren and Dinca, Lucian and Đogo-Mracević, Svetlana and Klopci, Matija and Mitrović, Suzana and Pach, Maciej and Ranđelović, Dragana and Ruiz-Peinado, Ricardo and Skrzyszewski, Jerzy and Orlić, Jovana and Štrbac, Snežana and Stojadinović, Sanja and Tonon, Giustino and Tosti, Tomislav and Uhl, Enno and Veselinović, Gorica and Veselinović, Milorad and Zlatanov, Tzvetan and Tognetti, Roberto",
year = "2021",
abstract = "Forests in Europe are currently not endangered by soil erosion. However, this can change with climate change or with intensified forest management practices. Using a newly established network of plots in beech forests across Europe, the aims of this study were to (i) distinguish soil properties and erodibility indices in relation to bedrock, (ii) determine geochemical properties and organic carbon (C-org) influencing erodibility, and (iii) assess the effect of soil depth on erodibility indices. Seventy-six soil samples from 20 beech forests were collected in 11 countries to quantify soil properties influencing erodibility indices: clay ratio, modified clay ratio, sodium adsorption ratio, and oxides ratio. The results indicate that the dominant soil properties, determined by bedrock, that correlate with forest soil erodibility indices are C-org, pH, electrical conductivity, calcium and sodium ions concentrations, total water-soluble cations, and the percentage of sand. According to the tested indices, soil susceptibility to erosion follows the order granite > andesite > sandstone > quartzite > limestone. Deeper soil horizons on granite are more susceptible to erosion than surface horizons are, but this is not the case for soils on limestones. In conclusion, forest management should consider the predisposition of different soil types to erosion.",
publisher = "Canadian Science Publishing, Ottawa",
journal = "Canadian Journal of Forest Research",
title = "Soil erodibility in European mountain beech forests",
pages = "1855-1846",
number = "12",
volume = "51",
doi = "10.1139/cjfr-2020-0361",
url = "conv_928"
}

Kasanin-Grubin, M., Hukić, E., Bellan, M., Bialek, K., Bosela, M., Coll, L., Czacharowski, M., Gajica, G., Giammarchi, F., Gomoryova, E., del Rio, M., Dinca, L., Đogo-Mracević, S., Klopci, M., Mitrović, S., Pach, M., Ranđelović, D., Ruiz-Peinado, R., Skrzyszewski, J., Orlić, J., Štrbac, S., Stojadinović, S., Tonon, G., Tosti, T., Uhl, E., Veselinović, G., Veselinović, M., Zlatanov, T.,& Tognetti, R.. (2021). Soil erodibility in European mountain beech forests. in Canadian Journal of Forest Research
Canadian Science Publishing, Ottawa., 51(12), 1846-1855.
https://doi.org/10.1139/cjfr-2020-0361
conv_928

Kasanin-Grubin M, Hukić E, Bellan M, Bialek K, Bosela M, Coll L, Czacharowski M, Gajica G, Giammarchi F, Gomoryova E, del Rio M, Dinca L, Đogo-Mracević S, Klopci M, Mitrović S, Pach M, Ranđelović D, Ruiz-Peinado R, Skrzyszewski J, Orlić J, Štrbac S, Stojadinović S, Tonon G, Tosti T, Uhl E, Veselinović G, Veselinović M, Zlatanov T, Tognetti R. Soil erodibility in European mountain beech forests. in Canadian Journal of Forest Research. 2021;51(12):1846-1855.
doi:10.1139/cjfr-2020-0361
conv_928 .

Kasanin-Grubin, Milica, Hukić, Emira, Bellan, Michal, Bialek, Kamil, Bosela, Michal, Coll, Lluis, Czacharowski, Marcin, Gajica, Gordana, Giammarchi, Francesco, Gomoryova, Erika, del Rio, Miren, Dinca, Lucian, Đogo-Mracević, Svetlana, Klopci, Matija, Mitrović, Suzana, Pach, Maciej, Ranđelović, Dragana, Ruiz-Peinado, Ricardo, Skrzyszewski, Jerzy, Orlić, Jovana, Štrbac, Snežana, Stojadinović, Sanja, Tonon, Giustino, Tosti, Tomislav, Uhl, Enno, Veselinović, Gorica, Veselinović, Milorad, Zlatanov, Tzvetan, Tognetti, Roberto, "Soil erodibility in European mountain beech forests" in Canadian Journal of Forest Research, 51, no. 12 (2021):1846-1855,
https://doi.org/10.1139/cjfr-2020-0361 .,
conv_928 .

TY  - JOUR
AU  - Ranđelović, Dragana
AU  - Mutić, Jelena
AU  - Marjanović, Prvoslav
AU  - Đorđević, Tamara
AU  - Kasanin-Grubin, Milica
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/533
AB  - Materials held within mine tailings pose a serious risk to the environment in cases of tailings dam failure. Collapse of the tailing dam at the Stolice antimony mine in West Serbia caused a spilling of tailing slurry into the nearby river watersheds. Medium-term effects of As, Pb, Sb, Zn, and Cd from the tailings material that remained in the flooded zone 3 years after the initial exposure were evaluated. Mobility of these elements was determined by analyzing their distribution between exchangeable, reducible, oxidizable, and residual phases. Results indicate that Fe-Mn oxides represent important sinks for As, Cd, Pb, and Sb. Multivariate statistical analysis revealed that concentrations of the analyzed elements were related to sand-sized fractions, as they tended to adsorb or co-precipitate as coatings on larger particles (particularly feldspar and quartz) upon the change of redox conditions. Assessment of the most relevant physico-chemical factors, metal(loid) concentration, and mobility can be used as tool to characterize the degree of contamination of impacted sites. Percentage of sand-sized particles, content of investigated metal(loid)s, and their amount in the reducible fractions are factors determining the best remediation techniques for the area impacted by tailing spill.
PB  - Springer Heidelberg, Heidelberg
T2  - Environmental science and pollution research
T1  - Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia
EP  - 6268
IS  - 6
SP  - 6253
VL  - 27
DO  - 10.1007/s11356-019-07348-4
UR  - conv_870
ER  - 

@article{
author = "Ranđelović, Dragana and Mutić, Jelena and Marjanović, Prvoslav and Đorđević, Tamara and Kasanin-Grubin, Milica",
year = "2020",
abstract = "Materials held within mine tailings pose a serious risk to the environment in cases of tailings dam failure. Collapse of the tailing dam at the Stolice antimony mine in West Serbia caused a spilling of tailing slurry into the nearby river watersheds. Medium-term effects of As, Pb, Sb, Zn, and Cd from the tailings material that remained in the flooded zone 3 years after the initial exposure were evaluated. Mobility of these elements was determined by analyzing their distribution between exchangeable, reducible, oxidizable, and residual phases. Results indicate that Fe-Mn oxides represent important sinks for As, Cd, Pb, and Sb. Multivariate statistical analysis revealed that concentrations of the analyzed elements were related to sand-sized fractions, as they tended to adsorb or co-precipitate as coatings on larger particles (particularly feldspar and quartz) upon the change of redox conditions. Assessment of the most relevant physico-chemical factors, metal(loid) concentration, and mobility can be used as tool to characterize the degree of contamination of impacted sites. Percentage of sand-sized particles, content of investigated metal(loid)s, and their amount in the reducible fractions are factors determining the best remediation techniques for the area impacted by tailing spill.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Environmental science and pollution research",
title = "Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia",
pages = "6268-6253",
number = "6",
volume = "27",
doi = "10.1007/s11356-019-07348-4",
url = "conv_870"
}

Ranđelović, D., Mutić, J., Marjanović, P., Đorđević, T.,& Kasanin-Grubin, M.. (2020). Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia. in Environmental science and pollution research
Springer Heidelberg, Heidelberg., 27(6), 6253-6268.
https://doi.org/10.1007/s11356-019-07348-4
conv_870

Ranđelović D, Mutić J, Marjanović P, Đorđević T, Kasanin-Grubin M. Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia. in Environmental science and pollution research. 2020;27(6):6253-6268.
doi:10.1007/s11356-019-07348-4
conv_870 .

Ranđelović, Dragana, Mutić, Jelena, Marjanović, Prvoslav, Đorđević, Tamara, Kasanin-Grubin, Milica, "Geochemical distribution of selected elements in flotation tailings and soils/sediments from the dam spill at the abandoned antimony mine Stolice, Serbia" in Environmental science and pollution research, 27, no. 6 (2020):6253-6268,
https://doi.org/10.1007/s11356-019-07348-4 .,
conv_870 .

TY  - JOUR
AU  - Kasanin-Grubin, Milica
AU  - Štrbac, Snežana
AU  - Antonijević, Snežana
AU  - Đogo-Mracević, Svetlana
AU  - Ranđelović, Dragana
AU  - Orlić, Jovana
AU  - Sajnović, Aleksandra
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/511
AB  - The Great War Island (GWI) is an area of importance for the protection of the environment, cultural and historical heritage of Belgrade, Serbia. According to the International Union for Conservation of Nature (IUCN) this area belongs to the N category - Habitats and Other Regulated Areas. The main objectives of this paper are to evaluate the potential impacts of pollution on ecosystem services of the Great War Island and to explore different scenarios for future urban development of the Great War Island that will have implication for human well-being. The aims of this paper are set up based on the evaluation of ecosystem services of the Great War Island and assessment of the pollution status of the Great War Island. In order to evaluate pollution status of the GWI inorganic and organic composition of sediments were examined. Additionally, the content of microelements was determined in the leaves of the Salix alba L. Pollution indices indicate that all investigated sampling sites are polluted and correspond to high and very high degree of contamination. Cd and Cu show high to extremely high degree of contamination while Sb has extremely high degree of contamination. Content of As, Co, Cu, Ni and Zn in leaves of Salix alba L. is in sufficient to normal range, while content of Cd is between the sufficient and excessive values generalized for various species. Typical oil distributions of terpanes and steranes and values of the corresponding maturity parameters clearly indicated that the sediments of the GWI, in addition to native organic matter, contained oil pollutants of anthropogenic origin. GWI provides provisioning, regulating, supporting and cultural ecosystem services. In relation to ecosystem services two possible scenarios can be predicted: first - losing the status of a protected area due to urbanization; and the second - increasing the degree of protection by admission into international protection lists.
PB  - Academic Press Ltd- Elsevier Science Ltd, London
T2  - Journal of Environmental Management
T1  - Future environmental challenges of the urban protected area Great War Island (Belgrade, Serbia) based on valuation of the pollution status and ecosystem services
VL  - 251
DO  - 10.1016/j.jenvman.2019.109574
UR  - conv_862
ER  - 

@article{
author = "Kasanin-Grubin, Milica and Štrbac, Snežana and Antonijević, Snežana and Đogo-Mracević, Svetlana and Ranđelović, Dragana and Orlić, Jovana and Sajnović, Aleksandra",
year = "2019",
abstract = "The Great War Island (GWI) is an area of importance for the protection of the environment, cultural and historical heritage of Belgrade, Serbia. According to the International Union for Conservation of Nature (IUCN) this area belongs to the N category - Habitats and Other Regulated Areas. The main objectives of this paper are to evaluate the potential impacts of pollution on ecosystem services of the Great War Island and to explore different scenarios for future urban development of the Great War Island that will have implication for human well-being. The aims of this paper are set up based on the evaluation of ecosystem services of the Great War Island and assessment of the pollution status of the Great War Island. In order to evaluate pollution status of the GWI inorganic and organic composition of sediments were examined. Additionally, the content of microelements was determined in the leaves of the Salix alba L. Pollution indices indicate that all investigated sampling sites are polluted and correspond to high and very high degree of contamination. Cd and Cu show high to extremely high degree of contamination while Sb has extremely high degree of contamination. Content of As, Co, Cu, Ni and Zn in leaves of Salix alba L. is in sufficient to normal range, while content of Cd is between the sufficient and excessive values generalized for various species. Typical oil distributions of terpanes and steranes and values of the corresponding maturity parameters clearly indicated that the sediments of the GWI, in addition to native organic matter, contained oil pollutants of anthropogenic origin. GWI provides provisioning, regulating, supporting and cultural ecosystem services. In relation to ecosystem services two possible scenarios can be predicted: first - losing the status of a protected area due to urbanization; and the second - increasing the degree of protection by admission into international protection lists.",
publisher = "Academic Press Ltd- Elsevier Science Ltd, London",
journal = "Journal of Environmental Management",
title = "Future environmental challenges of the urban protected area Great War Island (Belgrade, Serbia) based on valuation of the pollution status and ecosystem services",
volume = "251",
doi = "10.1016/j.jenvman.2019.109574",
url = "conv_862"
}

Kasanin-Grubin, M., Štrbac, S., Antonijević, S., Đogo-Mracević, S., Ranđelović, D., Orlić, J.,& Sajnović, A.. (2019). Future environmental challenges of the urban protected area Great War Island (Belgrade, Serbia) based on valuation of the pollution status and ecosystem services. in Journal of Environmental Management
Academic Press Ltd- Elsevier Science Ltd, London., 251.
https://doi.org/10.1016/j.jenvman.2019.109574
conv_862

Kasanin-Grubin M, Štrbac S, Antonijević S, Đogo-Mracević S, Ranđelović D, Orlić J, Sajnović A. Future environmental challenges of the urban protected area Great War Island (Belgrade, Serbia) based on valuation of the pollution status and ecosystem services. in Journal of Environmental Management. 2019;251.
doi:10.1016/j.jenvman.2019.109574
conv_862 .

Kasanin-Grubin, Milica, Štrbac, Snežana, Antonijević, Snežana, Đogo-Mracević, Svetlana, Ranđelović, Dragana, Orlić, Jovana, Sajnović, Aleksandra, "Future environmental challenges of the urban protected area Great War Island (Belgrade, Serbia) based on valuation of the pollution status and ecosystem services" in Journal of Environmental Management, 251 (2019),
https://doi.org/10.1016/j.jenvman.2019.109574 .,
conv_862 .

TY  - CONF
AU  - Zarić, Nenad
AU  - Šajnović, Aleksandra
AU  - Jovančićević, Branimir
AU  - Baltić, Nevena
AU  - Ranđelović, Dragana
AU  - Kašanin-Grubin, Milica
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1052
AB  - Rivers, which approximately deliver 20 billion
metric tons of transported sediment to oceans every
year, play a key role in Earth surface processes.
Determining the content of potentially harmful
heavy metals in rivers sediments is essential for
estimating the environmental risk. The main sources
of heavy metals in drainage basins are weathering
of rocks and anthropogenic activities.
The aim of this study is to determine the
geochemical properties in river sediments in order
to assess the intensity of possible anthropogenic
influence. Sediments were collected from the Great
War Island in Belgrade, located at the confluence of
Sava and Danube River (Fig. 1).
Number of authors analyzed Danube and Sava
sediments [e.g. 1, 2], but so far no studies have been
conducted on the confluence of these two rivers.
Contents of Cr and Ni are of particularly interest
since high concentrations of these two elements
were reported in previous studies, but their origin is
still not completely understood.
For the purpose of this study sediment samples
were collected on five locations: 3 locations along
the shore of the island (Kalemegdan, Lido and
Small port) and 2 inland locations (at the Big and
Small Galijas channels) (Fig. 1).
Mineralogical and geochemical properties were
determined on 27 samples. Grain size composition
was determined using the Laser Microsizer 2000,
contents of major and minor elements using X-ray
fluorescence diffraction (XRF). Content of organic
carbon (Corg) was determined with CHNOS
Elemental analyzer.
Grain size analysis shows that analyzed sediments
form four groups: sands, silty sands, sandy silts
and clayey silts. Sediments from the shores show
very high variation in dominant grain size, while
sediments from the inner part of the island are
clayey silts. This is in accordance with hydrological
conditions since Island shores and the Big Galijas
are under constant sediment input, although very
low energy flows occur in the channel. Sediment
deposition in the Small Galijas occurs only during
extreme floods and consequently fine grain
sediments are deposited.
Clay content and Corg content have positive
correlation. Sediments from the Small Galijas have
highest Corg (~5%) and lowest carbonate content
indicating calm reduce deposition environment.
Future organic geochemical analyses will give
important insight into distribution of organic
compound at the molecular level.
Contents of Cr and Ni in all samples have a positive
correlation indicating the same geogenic origin.
Content of Cr is grain size controlled in sediments
that are under constant water flux, meaning higher
Cr concentration in coarser sediments. Sediments
in the Small Galijas do not obey this rule due to its
specific depositional environment.
C3  - 18th European Meeting on Environmental Chemistry - EMEC18: Chemistry Towards an Infinite Environment
T1  - Geochemical Properties of the Sediments of the Great War Island, Belgrade (Serbia)
EP  - 241
SP  - 241
ER  - 

@conference{
author = "Zarić, Nenad and Šajnović, Aleksandra and Jovančićević, Branimir and Baltić, Nevena and Ranđelović, Dragana and Kašanin-Grubin, Milica",
year = "2017",
abstract = "Rivers, which approximately deliver 20 billion
metric tons of transported sediment to oceans every
year, play a key role in Earth surface processes.
Determining the content of potentially harmful
heavy metals in rivers sediments is essential for
estimating the environmental risk. The main sources
of heavy metals in drainage basins are weathering
of rocks and anthropogenic activities.
The aim of this study is to determine the
geochemical properties in river sediments in order
to assess the intensity of possible anthropogenic
influence. Sediments were collected from the Great
War Island in Belgrade, located at the confluence of
Sava and Danube River (Fig. 1).
Number of authors analyzed Danube and Sava
sediments [e.g. 1, 2], but so far no studies have been
conducted on the confluence of these two rivers.
Contents of Cr and Ni are of particularly interest
since high concentrations of these two elements
were reported in previous studies, but their origin is
still not completely understood.
For the purpose of this study sediment samples
were collected on five locations: 3 locations along
the shore of the island (Kalemegdan, Lido and
Small port) and 2 inland locations (at the Big and
Small Galijas channels) (Fig. 1).
Mineralogical and geochemical properties were
determined on 27 samples. Grain size composition
was determined using the Laser Microsizer 2000,
contents of major and minor elements using X-ray
fluorescence diffraction (XRF). Content of organic
carbon (Corg) was determined with CHNOS
Elemental analyzer.
Grain size analysis shows that analyzed sediments
form four groups: sands, silty sands, sandy silts
and clayey silts. Sediments from the shores show
very high variation in dominant grain size, while
sediments from the inner part of the island are
clayey silts. This is in accordance with hydrological
conditions since Island shores and the Big Galijas
are under constant sediment input, although very
low energy flows occur in the channel. Sediment
deposition in the Small Galijas occurs only during
extreme floods and consequently fine grain
sediments are deposited.
Clay content and Corg content have positive
correlation. Sediments from the Small Galijas have
highest Corg (~5%) and lowest carbonate content
indicating calm reduce deposition environment.
Future organic geochemical analyses will give
important insight into distribution of organic
compound at the molecular level.
Contents of Cr and Ni in all samples have a positive
correlation indicating the same geogenic origin.
Content of Cr is grain size controlled in sediments
that are under constant water flux, meaning higher
Cr concentration in coarser sediments. Sediments
in the Small Galijas do not obey this rule due to its
specific depositional environment.",
journal = "18th European Meeting on Environmental Chemistry - EMEC18: Chemistry Towards an Infinite Environment",
title = "Geochemical Properties of the Sediments of the Great War Island, Belgrade (Serbia)",
pages = "241-241"
}

Zarić, N., Šajnović, A., Jovančićević, B., Baltić, N., Ranđelović, D.,& Kašanin-Grubin, M.. (2017). Geochemical Properties of the Sediments of the Great War Island, Belgrade (Serbia). in 18th European Meeting on Environmental Chemistry - EMEC18: Chemistry Towards an Infinite Environment, 241-241.

Zarić N, Šajnović A, Jovančićević B, Baltić N, Ranđelović D, Kašanin-Grubin M. Geochemical Properties of the Sediments of the Great War Island, Belgrade (Serbia). in 18th European Meeting on Environmental Chemistry - EMEC18: Chemistry Towards an Infinite Environment. 2017;:241-241..

Zarić, Nenad, Šajnović, Aleksandra, Jovančićević, Branimir, Baltić, Nevena, Ranđelović, Dragana, Kašanin-Grubin, Milica, "Geochemical Properties of the Sediments of the Great War Island, Belgrade (Serbia)" in 18th European Meeting on Environmental Chemistry - EMEC18: Chemistry Towards an Infinite Environment (2017):241-241.

TY  - JOUR
AU  - Vuković, Nikola
AU  - Životić, Dragana
AU  - Mendonca Filho, Joao Graciano
AU  - Kravić-Stevović, Tamara
AU  - Hamor-Vido, Maria
AU  - Mendonca, Joalice de Oliveira
AU  - Stojanović, Ksenija
PY  - 2016
UR  - https://ritnms.itnms.ac.rs/handle/123456789/414
AB  - The artificial maturation changes of the humic coal organic matter (OM) from late diagenesis to the semianthracite stage of coalification were investigated using the closed-system pyrolysis. Two extracted coal samples, a subbituminous coal 26C (with a random vitrinite reflectance Rr = 0.42%) and a high volatile bituminous coal 30C (Rr = 0.56%), were pyrolysed during 4 hat two different temperatures, 250 degrees C and 400 degrees C. The applied petrographic and organic geochemical analyses showed that the humic coal OM is sensitive to the artificial thermal stress. A good correlation between the changes in petrographic characteristics and the derived liquid products was observed. The contents of all vitrinite macerals, as well as total vitrinite, increased during the thermal maturation. The abundance of liptinite macerals decreased during the maturation and they practically disappeared after 4 h of the pyrolysis at 400 degrees C. The total inertinite contents increased after the pyrolysis at 250 degrees C, yet to be decreased after the pyrolysis at 400 degrees C. The content of organic carbon increased from coals to the solid residues at 400 degrees C, whereas the contents of total hydrogen and sulphur decreased. The yields of gases, liquid products and solid residues at respective temperatures were very similar for both coals, regardless of the rank. As expected, the pyrolysis at 400 degrees C gave higher gas and liquid yields than at 250 degrees C. Regarding the liquid pyrolysates, more pronounced changes were observed in the distribution of aromatic compounds than in saturated biomarkers. The distributions of the aromatics indicate that apart from cracking and isomerisation (the formation of thermodynamically more stable isomers), the reactions of dehydrocyclization, condensation (the formation of more stable conjugated systems) and aromatization, as well as reactions involving H2S, elemental sulphur and reactive phenyl radicals released during the pyrolysis, also play an important role. It was shown that bentonitic clay plays a more important role in the subsequent aromatization of the OM than the initial maturity of the coal OM. n-Alkane parameters were useful at lower maturities (up to similar to 0.75% Rr), whereas sterane, naphthalene and phenanthrene maturity ratios are applicable at higher maturities (>0.75% Rr). Hopane parameters showed variable sensitivities over the investigated maturity range (0.5-1.8% Rr). The most sensitive maturity parameters in the wide range of the humic OM maturity (0.5-1.8% Rr) are vitrinite reflectance, phenylnaphthalene ratio, methylchrysene index 2 and a parameter proposed in this study, based on the distribution of methylfluorenes (MF): (2- + 3-MF) / (1- + 4-MF). Generally, maturity parameters based solely on the isomerisation reactions of alkylaromatics, which do not include alkylation/dealkylation processes, are more appropriate for the humic OM, particularly at higher maturities.
PB  - Elsevier, Amsterdam
T2  - International Journal of Coal Geology
T1  - The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments
EP  - 239
SP  - 213
VL  - 154-155
DO  - 10.1016/j.coal.2016.01.007
UR  - conv_752
ER  - 

@article{
author = "Vuković, Nikola and Životić, Dragana and Mendonca Filho, Joao Graciano and Kravić-Stevović, Tamara and Hamor-Vido, Maria and Mendonca, Joalice de Oliveira and Stojanović, Ksenija",
year = "2016",
abstract = "The artificial maturation changes of the humic coal organic matter (OM) from late diagenesis to the semianthracite stage of coalification were investigated using the closed-system pyrolysis. Two extracted coal samples, a subbituminous coal 26C (with a random vitrinite reflectance Rr = 0.42%) and a high volatile bituminous coal 30C (Rr = 0.56%), were pyrolysed during 4 hat two different temperatures, 250 degrees C and 400 degrees C. The applied petrographic and organic geochemical analyses showed that the humic coal OM is sensitive to the artificial thermal stress. A good correlation between the changes in petrographic characteristics and the derived liquid products was observed. The contents of all vitrinite macerals, as well as total vitrinite, increased during the thermal maturation. The abundance of liptinite macerals decreased during the maturation and they practically disappeared after 4 h of the pyrolysis at 400 degrees C. The total inertinite contents increased after the pyrolysis at 250 degrees C, yet to be decreased after the pyrolysis at 400 degrees C. The content of organic carbon increased from coals to the solid residues at 400 degrees C, whereas the contents of total hydrogen and sulphur decreased. The yields of gases, liquid products and solid residues at respective temperatures were very similar for both coals, regardless of the rank. As expected, the pyrolysis at 400 degrees C gave higher gas and liquid yields than at 250 degrees C. Regarding the liquid pyrolysates, more pronounced changes were observed in the distribution of aromatic compounds than in saturated biomarkers. The distributions of the aromatics indicate that apart from cracking and isomerisation (the formation of thermodynamically more stable isomers), the reactions of dehydrocyclization, condensation (the formation of more stable conjugated systems) and aromatization, as well as reactions involving H2S, elemental sulphur and reactive phenyl radicals released during the pyrolysis, also play an important role. It was shown that bentonitic clay plays a more important role in the subsequent aromatization of the OM than the initial maturity of the coal OM. n-Alkane parameters were useful at lower maturities (up to similar to 0.75% Rr), whereas sterane, naphthalene and phenanthrene maturity ratios are applicable at higher maturities (>0.75% Rr). Hopane parameters showed variable sensitivities over the investigated maturity range (0.5-1.8% Rr). The most sensitive maturity parameters in the wide range of the humic OM maturity (0.5-1.8% Rr) are vitrinite reflectance, phenylnaphthalene ratio, methylchrysene index 2 and a parameter proposed in this study, based on the distribution of methylfluorenes (MF): (2- + 3-MF) / (1- + 4-MF). Generally, maturity parameters based solely on the isomerisation reactions of alkylaromatics, which do not include alkylation/dealkylation processes, are more appropriate for the humic OM, particularly at higher maturities.",
publisher = "Elsevier, Amsterdam",
journal = "International Journal of Coal Geology",
title = "The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments",
pages = "239-213",
volume = "154-155",
doi = "10.1016/j.coal.2016.01.007",
url = "conv_752"
}

Vuković, N., Životić, D., Mendonca Filho, J. G., Kravić-Stevović, T., Hamor-Vido, M., Mendonca, J. d. O.,& Stojanović, K.. (2016). The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments. in International Journal of Coal Geology
Elsevier, Amsterdam., 154-155, 213-239.
https://doi.org/10.1016/j.coal.2016.01.007
conv_752

Vuković N, Životić D, Mendonca Filho JG, Kravić-Stevović T, Hamor-Vido M, Mendonca JDO, Stojanović K. The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments. in International Journal of Coal Geology. 2016;154-155:213-239.
doi:10.1016/j.coal.2016.01.007
conv_752 .

Vuković, Nikola, Životić, Dragana, Mendonca Filho, Joao Graciano, Kravić-Stevović, Tamara, Hamor-Vido, Maria, Mendonca, Joalice de Oliveira, Stojanović, Ksenija, "The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments" in International Journal of Coal Geology, 154-155 (2016):213-239,
https://doi.org/10.1016/j.coal.2016.01.007 .,
conv_752 .

TY  - JOUR
AU  - Nytoft, H.P.
AU  - Vuković, Nikola
AU  - Kildahl-Andersen, Geir
AU  - Rise, Frode
AU  - Životić, Dragana
AU  - Stojanović, Ksenija
PY  - 2016
UR  - https://ritnms.itnms.ac.rs/handle/123456789/394
AB  - series of novel C-33-C-35 hexacyclic benzohopanes (C(33)b-C(35)b) were identified in 39 samples of coal extracts and 39 crude oils of different ages from all over the world. C(33)b and C(34)b homologues were isolated, and their structures were determined by nuclear magnetic resonance. The structure of C(35)b benzohopane was proposed based on the mass spectrum and its similarity with the mass spectra of structurally defined C(33)b and C(34)b homologues. The structures of the C(33)b-C(35)b hexacyclic benzohopanes are closely related to isohopanes; both groups are typical for terrestrial organic matter and can be useful in the correlation analysis. A possible pathway of formation of these novel benzohopanes and their hopanoid precursors with an additional branch in the aliphatic side chain is proposed. C(33)b-C(35)b hexacyclic benzohopanes are stable up to the maturity level corresponding to random vitrinite reflectance (Rr) of similar to 0.80%, which was demonstrated by analyzing the samples of different maturity and by the maturation simulation experiments: hydrous pyrolysis of two bituminous coals (Rr = 0.55 and 0.59%) and pyrolysis of an extracted bituminous coal (Rr = 0.56%) and its asphaltenes. This represents a confirmation that the formation of these novel benzohopanes is related to specific depositional conditions and microbial activity during diagenesis. Mature samples (Rr = 0.8%) and hydrous pyrolysate of the bituminous coals (Rr  LT  0.60%) obtained at 330 degrees C show a distinct distribution of benzohopanes in comparison to immature and moderately mature samples, which is characterized by a low abundance of the b series benzohopanes and the presence of regular and numerous other benzohopane isomers. The latter most likely represent isomers of regular and novel benzohopanes with different substitution patterns on the aromatic ring. This isomerization of alkyl groups attached to the aromatic ring, leading to the formation of thermodynamically more stable isomers, is a well-known maturation scenario so far reported in the series of alkylated naphthalenes, phenanthrenes, and dibenzothiophenes. Therefore, in the same way, a distribution of benzohopanes can indicate thermal maturity. In addition to the novel benzohopanes, three series (2 alpha, 2 beta, and 3 beta) of their methylated derivatives were identified in numerous samples. Finally, a novel C-35 heptacyclic benzohopane with an additional cyclopentane ring was also observed in the studied samples, and its structure was tentatively identified based on the mass spectrum. Opposite to the hexacyclic C(33)b-C(35)b benzohopanes, the formation of the C-35 heptacyclic benzohopane does not require a specific hopanoid precursor with two branches in the side chain. Therefore, this compound seems to have less geochemical significance than the new hexacyclic benzohopanes.
PB  - Amer Chemical Soc, Washington
T2  - Energy & Fuels
T1  - Identification of a Novel Series of Benzohopanes and Their Geochemical Significance
EP  - 5575
IS  - 7
SP  - 5563
VL  - 30
DO  - 10.1021/acs.energyfuels.6b00799
UR  - conv_765
ER  - 

@article{
author = "Nytoft, H.P. and Vuković, Nikola and Kildahl-Andersen, Geir and Rise, Frode and Životić, Dragana and Stojanović, Ksenija",
year = "2016",
abstract = "series of novel C-33-C-35 hexacyclic benzohopanes (C(33)b-C(35)b) were identified in 39 samples of coal extracts and 39 crude oils of different ages from all over the world. C(33)b and C(34)b homologues were isolated, and their structures were determined by nuclear magnetic resonance. The structure of C(35)b benzohopane was proposed based on the mass spectrum and its similarity with the mass spectra of structurally defined C(33)b and C(34)b homologues. The structures of the C(33)b-C(35)b hexacyclic benzohopanes are closely related to isohopanes; both groups are typical for terrestrial organic matter and can be useful in the correlation analysis. A possible pathway of formation of these novel benzohopanes and their hopanoid precursors with an additional branch in the aliphatic side chain is proposed. C(33)b-C(35)b hexacyclic benzohopanes are stable up to the maturity level corresponding to random vitrinite reflectance (Rr) of similar to 0.80%, which was demonstrated by analyzing the samples of different maturity and by the maturation simulation experiments: hydrous pyrolysis of two bituminous coals (Rr = 0.55 and 0.59%) and pyrolysis of an extracted bituminous coal (Rr = 0.56%) and its asphaltenes. This represents a confirmation that the formation of these novel benzohopanes is related to specific depositional conditions and microbial activity during diagenesis. Mature samples (Rr = 0.8%) and hydrous pyrolysate of the bituminous coals (Rr  LT  0.60%) obtained at 330 degrees C show a distinct distribution of benzohopanes in comparison to immature and moderately mature samples, which is characterized by a low abundance of the b series benzohopanes and the presence of regular and numerous other benzohopane isomers. The latter most likely represent isomers of regular and novel benzohopanes with different substitution patterns on the aromatic ring. This isomerization of alkyl groups attached to the aromatic ring, leading to the formation of thermodynamically more stable isomers, is a well-known maturation scenario so far reported in the series of alkylated naphthalenes, phenanthrenes, and dibenzothiophenes. Therefore, in the same way, a distribution of benzohopanes can indicate thermal maturity. In addition to the novel benzohopanes, three series (2 alpha, 2 beta, and 3 beta) of their methylated derivatives were identified in numerous samples. Finally, a novel C-35 heptacyclic benzohopane with an additional cyclopentane ring was also observed in the studied samples, and its structure was tentatively identified based on the mass spectrum. Opposite to the hexacyclic C(33)b-C(35)b benzohopanes, the formation of the C-35 heptacyclic benzohopane does not require a specific hopanoid precursor with two branches in the side chain. Therefore, this compound seems to have less geochemical significance than the new hexacyclic benzohopanes.",
publisher = "Amer Chemical Soc, Washington",
journal = "Energy & Fuels",
title = "Identification of a Novel Series of Benzohopanes and Their Geochemical Significance",
pages = "5575-5563",
number = "7",
volume = "30",
doi = "10.1021/acs.energyfuels.6b00799",
url = "conv_765"
}

Nytoft, H.P., Vuković, N., Kildahl-Andersen, G., Rise, F., Životić, D.,& Stojanović, K.. (2016). Identification of a Novel Series of Benzohopanes and Their Geochemical Significance. in Energy & Fuels
Amer Chemical Soc, Washington., 30(7), 5563-5575.
https://doi.org/10.1021/acs.energyfuels.6b00799
conv_765

Nytoft H, Vuković N, Kildahl-Andersen G, Rise F, Životić D, Stojanović K. Identification of a Novel Series of Benzohopanes and Their Geochemical Significance. in Energy & Fuels. 2016;30(7):5563-5575.
doi:10.1021/acs.energyfuels.6b00799
conv_765 .

Nytoft, H.P., Vuković, Nikola, Kildahl-Andersen, Geir, Rise, Frode, Životić, Dragana, Stojanović, Ksenija, "Identification of a Novel Series of Benzohopanes and Their Geochemical Significance" in Energy & Fuels, 30, no. 7 (2016):5563-5575,
https://doi.org/10.1021/acs.energyfuels.6b00799 .,
conv_765 .