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Tytuł:
Modeling and Prediction of Iron Ore Quality Indicators
Modelowanie i predykcja wskaźników jakości rudy żelaza
Autorzy:
Peremetchyk, Andrii
Pysmennyi, Serhii
Shvaher, Nataliia
Fedorenko, Serhii
Podoynitsyna, Tatyana
Powiązania:
https://bibliotekanauki.pl/articles/2200985.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
geometrization
mining geometrical methods of prediction
geostatistical methods
kriging
heuristic algorithms of prediction
multidimensional random geochemical field
geometryzacja
górnicze metody predykcji geometrycznej
metody geostatystyczne
wielowymiarowe losowe pole geochemiczne
heurystyczne algorytmy predykcji
Opis:
The paper proposes solution of the topical scientific problem that consists in developing a geometrical method of predicting quality indicators of iron ore deposits, applying a mathematical model of a multidimensional random geochemical field which is realized on the basis of self-organizing prediction methods. The authors develop a multidimensional heuristic prediction algorithm that uses a polynomial of arbitrary power and enables description of any functional dependency. It is demonstrated that a system of equations of a multidimensional random geochemical field should be used to mathematically describe elements of the rock massif. The graphoanalytical model of the deposit is built using geostatistical methods. It is determined that at Kryvbas deposits the kriging method is the most suitable for assessing and improving reliability of the input geological data since detailed geological exploration is carried out by means of an irregular grid of boreholes. An important aspect of geometrization of iron ore deposits is geometrical prediction of their quality indicators for solving tasks of long-term and current planning in order to provide the most efficient performance of the mining enterprise to improve rationalization of deposit development.
W artykule zaproponowano rozwiązanie aktualnego problemu naukowego polegającego na opracowaniu geometrycznej metody prognozowania wskaźników jakości złóż rud żelaza, z zastosowaniem modelu matematycznego wielowymiarowego losowego pola geochemicznego, realizowanego z wykorzystaniem samoorganizujących metod predykcyjnych. Autorzy opracowują wielowymiarowy algorytm predykcji heurystycznej, wykorzystujący wielomian o dowolnej potędze i umożliwiający opis dowolnej zależności funkcjonalnej. Wykazano, że do matematycznego opisu elementów masywu skalnego należy zastosować układ równań wielowymiarowego losowego pola geochemicznego. Model grafoanalityczny złoża jest budowany metodami geostatystycznymi. Stwierdzono, że w przypadku złóż Kryvbas metoda krigingu jest najbardziej odpowiednia do oceny i poprawy wiarygodności wejściowych danych geologicznych, ponieważ szczegółowe badania geologiczne prowadzone są za pomocą nieregularnej siatki otworów wiertniczych. Ważnym aspektem geometryzacji złóż rud żelaza jest geometryczne przewidywanie ich wskaźników jakościowych dla rozwiązywania zadań planowania długoterminowego i bieżącego w celu zapewnienia jak najbardziej efektywnego funkcjonowania przedsiębiorstwa górniczego dla poprawy racjonalizacji zagospodarowania złoża.
Źródło:
Inżynieria Mineralna; 2023, 1; 119--128
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Palaeoenvironmental and palaeoclimatic records in the Niedzica Succession sediments (Pieniny Klippen Belt) in the light of geochemical and chemostratigraphical analysis
Autorzy:
Kasperek, Kamila
Powiązania:
https://bibliotekanauki.pl/articles/24202125.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Pieniny Klippen Belt
geochemical analysis
chemostratigraphical analysis
Opis:
The Middle–Upper Jurassic sediments of the Niedzica-Podmajerz section was the subject of integrated study, including sedimentological, geochemical and stratigraphic analysis. The studied section is located in the Pieniny Klippen Belt area and belongs to the Niedzica unit. The section is characterized by continuous exposure of Jurassic carbonate-silica deposits extending from the Bajocian to Kimmeridgian, showing a transition from crinoidal limestones representing typical neritic facies to pelagic facies, i.e. radiolarites and red nodular limestones. The following lithofacies were distinguished in the studied section: grey crinoidal limestones (Smolegowa Limestone Formation), red crinoidal limestones (Krupianka Limestone Formation), red nodular limestones (Niedzica Limestone Formation), radiolarites (Czajakowa Radiolarites Formation) and red nodular limestones (Czorsztyn Limestone Formation). Based on a multidisciplinary dataset, the palaeoenvironmental interpretation was proposed. The results of magnetic susceptibility (MS), gamma-ray spectrometric measurements, CaCO3 content, δ13C analysis and concentrations of major and trace elements data indicate a rapid change in sedimentary conditions at the Callovian–Oxfordian boundary. Variations of δ13C from the Niedzica-Podmajerz indicate global changes in biological productivity, ocean circulation and burial of organic matter in the Tethys area, analogies of which can be found, for example, in Fatricum Domain in the Tatra Mountains. Records of MS, elements K, Th, Al, as well as Ti/Al and Zr/Al proxies indicate probably a period of increased (Lower Bathonian–Upper Callovian) and decreased (Oxfordian) detrital supply to the sedimentary basin. This process was most likely climatically controlled. The CaCO3 results indicate the variability of carbonate production. The lowest values of calcium carbonate (<20%) in Niedzica-Podmajerz section was recorded in the middle part of the radiolarites of the Czajakowa Radiolarite Formation, corresponding to the phase of the carbonate crisis. From this interval, the amount of carbonates in the rocks gradually increases, indicating a return to carbonate sedimentation. These fluctuations probably reflect changes in the position of the ACD and CCD.
Źródło:
Geotourism / Geoturystyka; 2023, 1-2 (72-73); 34--34
1731-0830
Pojawia się w:
Geotourism / Geoturystyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
REE-bearing minerals in sediment-hosted stratiform pyrite mineralization zones of the Wiśniówka area (Holy Cross Mts., Poland)
Autorzy:
Migaszewski, Zdzisław M.
Gałuszka, Agnieszka
Zielińśki, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/31342963.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
siliciclastic rocks
REE-bearing minerals
geochemical analysis
SEM-EDS
EMPA
REE-mineral provenance
Wiśniówka area
Polska
Opis:
There are two arsenical pyrite (As-FeS2mineralization zones cropping out in the Podwiśniówka and Wiśniówka Duża quarries where quartzites and quartzitic sandstones have been extracted for over a century. A large amount of pyrite in the Wiśniówka siliciclastics is unusual in the hard rock mining throughout the world. The pyritiferous beds contain a variety of REE-bearing minerals, including a crandallite series of aluminum-phosphate-sulfate (APS) minerals, e.g., predominant goyazite SrHAl3[(PO4)2(OH)6] with subordinate gorceixite BaHAl3[(PO4)2(OH)6] and very occasional crandallite CaHAl3[(PO4)2(OH)6]. By contrast, the other REE-phosphate minerals, e.g., xenotime YPO4, bur particularly monazite CePO4 occur in a lesser amount. Goyazite prevails somewhat in the Podwiśniówka beds whereas xenotime in the Wiśniówka Duża beds. Of the other REE-bearing minerals, bastnäsite REECO3(F,OH), florencite (REE)Al3(PO4)2(OH)6 and synchysite CaCe[CO3]2F occur in trace amounts. Interestingly, the quite common phosphate minerals, i.e., wavellite (Al.3[(OH,F)3|(PO4)2]×5H2O and variscite Al[PO4]×2H2O) are depleted in REEs with only Ce attaining 0.09 wt.% as documented by an electron-probe microanalysis. In contrast to quartzites/quartzitic sandstones, carbonaceous clayey-silty shales and bentonites/tuffites are distinctly enriched in REE-bearing minerals. This diversity is also mirrored in the mean total REE concentrations varying from 204 to 314 mg/kg, in clayey-silty shales and bentonites, attaining 457 mg/kg in some Podwiśniówka shale beds. Results of this and the previous petrographic, mineralogical and geochemical studies have indicated that REE-bearing minerals formed generally along with As-rich pyrite, nacrite/dickite and probably TiO2 polymorphs as a result of multiphase hydrothermal vent activity that took place in the Wiśniówka Late Cambrian sedimentary basin. This evidence is also backed up by the values of LREENASC/HREENASC (1.44–1.75) and Eu/EuNASC (1.24–1.30) coefficients in the clayey-silty shales. This positive Eu anomaly (31.20) points to the formation of REE-bearing minerals in a reducing environment.
Źródło:
Geological Quarterly; 2023, 67, 2; art. no. 17
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Toxic elements in carboniferous sedimentary rocks from the Upper Silesian Coal Basin
Pierwiastki toksyczne w karbońskich skałach osadowych Górnośląskiego Zagłębia Węglowego
Autorzy:
Kokowska-Pawłowska, Magdalena
Krzeszowska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/2203299.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
toxic elements
geochemical composition
Upper Silesian Coal Basin
pierwiastki toksyczne
skład geochemiczny
Górnośląskie Zagłębie Węglowe
Opis:
Trace elements contained in rocks, especially those classified as potentially toxic elements (PTEs), can be largely harmful. Knowledge of the geochemical composition of waste is of great importance due to the potential possibility of contamination with these elements in the environment. The paper presents the geochemical characteristics of the sedimentary rocks from the Carboniferous coal-bearing series of the USCB. The present study used data for 120 samples from borehole WSx representing Zaleskie layers and Orzeskie layers within the Mudstone Series (Westphalian A, B). Major oxide concentrations (Al2O3, SiO2, Fe2O3, P2O5, K2O, MgO, CaO, Na2O, K2O, MnO, TiO2, Cr2O3, Ba) were obtained using an X-ray fluorescence spectrometry. The concentration of potentially toxic elements (Be, Sc, V, Cr, Co, Ni, Cu, Zn, As, Rb, Sr, Zr, Mo, Cd, Sn, Sb, Ba, W, Tl, Pb, Bi, Th, and U) was analyzed using inductively-coupled plasma mass spectrometry. As there are no relevant standards for the content of toxic elements in post-mining waste stored in dumps, the concentrations of elements were compared to their share in the Upper Continental Crust. Most elements, such as B, Sc, V, Cr, Ni, Cu, Zn, As, Sb, W, Tl, Pb, Bi, Th, and U had higher mean concentrations than those of the Upper Continental Crust (UC). Concentrations of the analyzed toxic elements in the studied samples did not exceed permissible values for soils, therefore they are not a potential threat to the environment. The results of the Pearson correlation analysis showed differing relationships among the analyzed toxic elements in the studied samples.
Pierwiastki śladowe zawarte w skałach, zwłaszcza te zaliczane do pierwiastków potencjalnie toksycznych (PTE), mogą być w dużej mierze szkodliwe. Znajomość składu geochemicznego odpadów ma duże znaczenie ze względu na potencjalne możliwości zanieczyszczenia środowiska tymi pierwiastkami. W pracy przedstawiono geochemiczną charakterystykę skał osadowych z serii węglonośnej GZW. W niniejszej pracy wykorzystano dane dla 120 próbek z otworu wiertniczego WSx reprezentujące warstwy zaleskie i orzeskie Serii Mułowcowej (westfal A, B). Stężenia głównych tlenków (Al2O3, SiO2, Fe2O3, P2O5, K2O, MgO, CaO, Na2O, K2O, MnO, TiO2, Cr2O3, Ba) oznaczono metodą fluorescencji rentgenowskiej. Stężenie pierwiastków potencjalnie toksycznych (Be, Sc, V, Cr, Co, Ni, Cu, Zn, As, Rb, Sr, Zr, Mo, Cd, Sn, Sb, Ba, W, Tl, Pb, Bi, Th, i U) analizowano za pomocą spektrometrii mas z plazmą sprzężoną indukcyjnie. Ze względu na brak odpowiednich norm dotyczących zawartości pierwiastków toksycznych w odpadach pogórniczych składowanych na składowiskach porównano stężenia pierwiastków z ich udziałem w górnej części skorupy ziemskiej (UC). Większość pierwiastków, takich jak B, Sc, V, Cr, Ni, Cu, Zn, As, Sb, W, Tl, Pb, Bi, Th i U, miała wyższe średnie koncentracje niż koncentracje w górnej części skorupy ziemskiej Stężenia analizowanych pierwiastków toksycznych w badanych próbkach nie przekraczały wartości dopuszczalnych dla gleb, dlatego nie stanowią potencjalnego zagrożenia dla środowiska. Wyniki analizy korelacji Pearsona wykazały różne zależności między analizowanymi pierwiastkami toksycznymi w badanych próbach.
Źródło:
Gospodarka Surowcami Mineralnymi; 2023, 39, 1; 63--86
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of groundwater potability for the population: Geochemical evaluation of aquifers in the city of Krasnodar
Autorzy:
Azimov, Abdugani
Nekrasova, Larisa
Gura, Dmitry
Powiązania:
https://bibliotekanauki.pl/articles/2073727.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
aquifers
drinking water
geochemical analysis
heavy metals content
Krasnodar
morbidity stage
wells
Opis:
This work aimed to evaluate groundwater potability for the population through geochemical assessment methods on the example of aquifers in Krasnodar city. In 2016 and 2019, on the territory of Krasnodar city (Krasnodar region, Russian Federation), a detailed geochemical analysis of groundwater quality was performed based on a total of 6000 samples, 3000 samples per each year. Samples were taken from 30 wells located at depths of up to 450 m in the layers of Anthropogen and Neogene stages. Quantitative analysis of wells according to the average water quality parameters showed that in 15 wells, the water condition met the MAC (maximum allowable concentration) standards in all layers. Water abundance between the layers of the Quaternary and Cimmerian stages is seven times as different (p ≤ 0.001) towards the latter, the hardness between the same horizons is ten times as different (p ≤ 0.001) towards the Quaternary stage and three times as different (p ≤ 0.05) in terms of solid residue. Thus, the water hardness and water abundance index vary significantly between the vertical layers. A strong positive correlation between the solid residue and the hardness values (Pearson correlation 0.93, p ≤ 0.05), and a negative correlation between water abundance and solid residue values (Pearson correlation - 0.83, p ≤ 0.05), as well as between the hardness and water abundance values (Pearson correlation - 0.81, p ≤ 0.05) was recorded. These findings can be used for regions with similar deposits of rocks and aquifers.
Źródło:
Journal of Water and Land Development; 2022, 52; 34--43
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tectonomagmatic settings of Jurassic granitoids in the Sanandaj-Sirjan Zone, Iran: A review
Autorzy:
Karimpour, Mohammad Hassan
Shirdashtzadeh, Nargess
Sadeghi, Martiya
Powiązania:
https://bibliotekanauki.pl/articles/2204354.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
geochemical data
geophysical data
Jurassic magmatism
Sanandaj-Ghorveh Zone
Hamadan-Sirjan Zone
dane geochemiczne
dane geofizyczne
magmatyzm jurajski
Ghorwe
Sanandadż
Hamadan
Sirdżan
Opis:
The present paper discusses the geochemical affinities, origin and ages of Jurassic granitoids of the Sanandaj-Sirjan Zone (SaSZ) in the eastern part of the Zagros Thrust Zone. A multidisciplinary, integrated approach was carried out using existing granitoid geochemical data (major, trace, rare earth element and isotopes) and knowledge of the regional geology (geodynamic and metamorphic setting), coupled with geophysical data (magnetic susceptibility) from granitoids in the SaSZ. We re-interpret and re-classify the Jurassic granitoids of this zone into three main genetic groups: S-type, I-type and A-type subduction-related ones. In the central to southern part of the Sanandaj-Sirjan zone (between Hamadan and Sirjan), S-type magmatism appeared between 178 and 160 Ma during the Cimmerian orogeny, due to continental collision. To the north of the Sanandaj-Sirjan zone (between Sanandaj and Ghorveh), I-type and A-type magmatism occurred between 158 and 145 Ma. This heterogenic tectonomagmatic system along the SaSZ suggests a heterogenic subcontinental lithospheric mantle, resulting in two Jurassic tectonomagmatic zones of (1) the Sanandaj-Ghorveh Zone and (2) the Hamadan-Sirjan Zone.
Źródło:
Geologos; 2022, 28, 1; 19--37
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dane geośrodowiskowe : zakres i udostępnianie zgromadzonej informacji
Geoenvironmental databases : the scope of data and sharing collected information
Autorzy:
Palacz, Barbara
Kozłowska, Olimpia
Pasieczna, Anna
Konon, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/2076145.pdf
Data publikacji:
2021
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
mapa geośrodowiskowa Polski
dane geośrodowiskowe
dane geochemiczne
Geoenvironmental Map of Poland
geoenvironmental data
geochemical data
Opis:
The Geoenvironmental Map of Poland is dedicated to the most important issues related to the effective management of mineral resources, in the context of both already documented deposits and the perspective base for individual minerals. The information collected on the map is presented in the context of environmental conditions that may significantly affect the possibility of exploitation minerals. The three editions of the Geoenvironmental Map of Poland cover a total of 3,255 sheets A and 2,170 sheets B, available in analogue and digital form, usingweb services and tools. Free and easy access, aswellasawidecross-section of data, makes the Geoenvironmental Map of Poland can realistically support the activities ofgeological administration atthe poviat and voivodship levels.
Źródło:
Przegląd Geologiczny; 2021, 69, 11; 751--758
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Innovative Process for Efficient Data Evaluation in an Atmospheric Geochemical Survey of Contaminated Soil
Autorzy:
Eskvarekova, Erika
Wittenberger, Gabriel
Senova, Andrea
Bakalar, Tomas
Harcarufka, Rastislav
Powiązania:
https://bibliotekanauki.pl/articles/1838054.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
analyzer
soil contamination
data processing
Windows Power Shell
environment
geochemical survey
analizator
zanieczyszczenie gleby
przetwarzanie danych
środowisko
badania geochemiczne
Opis:
The article focuses on the field of innovative trends for efficient data processing in the conduct of research of organic soil pollution using a soil air analyzer for surveys of soil contamination in situ at industrial enterprises in Slovakia. The content of the article is a discourse of theoretical knowledge from the field of the geological environment; the authors’ own survey to monitor the processing and evaluation of the measured values obtained (e.g., CO2, CH4, NEL, BTEX). Currently, standard data processing procedures using the software that is supplied have basic or limited functionality, and the processing time is several hours, including manual and repetitive tasks. As we present in the article, the new Windows PowerShell tool is being used more efficiently, reducing the data processing time which represents an 86% time saving. There is currently no suitable or faster way of evaluating the measured data in Slovakia and the Czech Republic.
Źródło:
Civil and Environmental Engineering Reports; 2020, 30, 4; 173-187
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Element enrichment and provenance of the detrital component in Holocene sediments from the Western Black Sea
Autorzy:
Dekov, V.M.
Darakchieva, V.Y.
Billstrom, K.
Garbe-Schonberg, C.D.
Kamenov, G.D.
Gallinari, M.
Dimitrov, L.
Ragueneau, O.
Kooijman, E.
Powiązania:
https://bibliotekanauki.pl/articles/2079273.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
trace element concentration
isotope analysis
enrichment factor
Holocene sediment
catchment area
geochemical analysis
Black Sea
Opis:
Concentrations of a large set of major and trace elements, and Sr, Nd and Pb isotope ratios were measured in Holocene sediments cored in the western deep Black Sea in order to unravel: (1) the controls of element enrichment, and (2) sources of the detrital component. The transition of the basin from oxic to euxinic resulted in enrichment or depletion in a number of elements in the deep-sea sediments. Authigenic Fe enrichment appears to depend on the amount of Fe mobilized from the sediment through the benthic redox shuttle mechanism and free H2S in the water column (degree of “euxinization”). Manganese enrichment is controlled by diagenetic reactions within the sediment: the dissolution of Mn minerals, Mn2+ diffusion upward and reprecipitation. Barium enrichment is also controlled by diagenetic reactions, sulfate reduction and methanogenesis, that take place above and below the sulfate-methane transition, respectively. The major part of V, Co, Ni, Cu, Zn, Cr, Mo, Cd and Sb is inferred to have co-precipitated with Fe in the euxinic deep waters and to have been incorporated into authigenic Fe-sulfides. Basin reservoir effect additionally influences the Mo enrichment. The U enrichment is interpreted to have a different origin in the two organic-rich stratigraphic units (II and I). It is inferred to be: (i) at the expense of the U inventory of the deepwater pool and a result of inorganic reduction of U at euxinic conditions in the lower Unit II; and (ii) at the expense of the U inventory of the surface water pool and a result of biogenic uptake and transfer to the sediment by the plankton in the upper Unit I. The high field strength elements are closely linked to the detrital component and their depletion in the organic-rich sediments reflects a dilution of the detrital component by the biogenic one. The enrichments of REE, Sn and Th are likely controlled by adsorption on clay minerals. Sr-Nd-Pb isotope compositions of the alumino-silicate component of the studied sediments are relatively uniform. They are most likely controlled by riverine suspended matter supplied mainly in the NW Black Sea (Danube Delta) and transported southward by marine currents, and to a lesser degree by suspended matter from the small rivers draining SE Bulgaria and NW Turkey. Wind-blown dust from the Sahara Desert appears to have a minor contribution to the alumino-silicate component of the sediments. The slight shift in the Pb isotopes in Unit I upper layers is possibly caused by the addition of anthropogenic Pb.
Źródło:
Oceanologia; 2020, 62, 2; 139-163
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geographic Information System as a Tool to Support Environmental Monitoring and Management – Case Study of Bottom Sediments
System Informacji Geograficznej, jako narzędzie wspomagające monitoring i zarządzanie środowiskiem – przykład osadów dennych
Autorzy:
Rozpondek, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1811627.pdf
Data publikacji:
2020
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
geochemical classification
heavy metals
decision making
klasyfikacja geochemiczna
metale ciężkie
podejmowanie decyzji
Opis:
The aim of the conducted studies was made to develop a bottom sediment monitoring network for selected water reservoirs of the Silesian voivodeship (Ostrowy, Poraj and Dzierżno Duże reservoirs). Based on the obtained spatial distributions, the location of points was selected, which should be considered in further studies. In the search for the solution, it was assumed that the network enabling collection of reliable results on the sludge quality, while minimising financial outlays, should not exceed 25% of measurement points from the base year. In order to define the quality and accuracy of the planned network, a visual assessment of the obtained spatial distributions was used. A comparison of the classification of measurement stations with respect to the quality assessment of the geochemical criterion in relation to the selected heavy metal real data, as well as the values obtained on the basis of the simulation was made. Comparative analysis showed a high range of changes in the classification of measuring positions (Ostrowy 0-5 positions, Poraj 0-19 positions, Dzierżno Duże 0-16 positions). This fact is associated with a significant range of base data resulting from high pollution of bottom sediments with individual heavy metals (Ostrowy – Cr, Ni, Poraj – Cd, Pb, Zn, Dzierżno Duży – Cd, Zn). Considering the conducted research, it was found that the sustainable management of the environment by determining the bottom sediment monitoring network of the Ostrowy, Poraj and Dzierżno Duże reservoirs should be based on an individual research approach for each of the facilities. The research allowed to state that GIS has a significant impact on decision-making in the field of environmental management.
Celem przeprowadzonych badań była próba opracowania sieci monitoringu osadów dennych wybranych zbiorników wodnych województwa śląskiego (zbiornik Ostrowy, Poraj i Dzierżno Duże). Na podstawie uzyskanych rozkładów przestrzennych całkowitej zawartości metali ciężkich i ich geochemicznej klasyfikacji wytypowano lokalizację punktów, które powinny zostać uwzględniane w dalszych badaniach. W poszukiwaniu rozwiązania założono, że sieć pozwalająca na uzyskanie wiarygodnych wyników jakości osadów, przy jednoczesnej minimalizacji nakładów finansowych, nie powinna przekraczać 25% punktów pomiarowych pochodzących z roku bazowego. W celu zdefiniowania jakości i poprawności zaplanowanej sieci posłużono się wizualną oceną uzyskanych rozkładów przestrzennych. Dokonano również porównania klasyfikacji stanowisk pomiarowych względem oceny jakości kryterium geochemicznego w odniesieniu do wybranego metalu ciężkiego danych rzeczywistych, jak i wartości uzyskanych na podstawie przeprowadzonej symulacji. Analiza porównawcza wykazała wysoki zakres zmian klasyfikacji stanowisk pomiarowych (Ostrowy 0-5 stanowisk, Poraj 0-19 stanowisk, Dzierżno Duże 0-16 stanowisk). Zjawisko to związane jest ze znaczną rozpiętością wartości danych bazowych wynikającą z wysokiego zanieczyszczenia osadów dennych poszczególnymi metalami ciężkimi (Ostrowy – Cr, Ni, Poraj – Cd, Pb, Zn, Dzierżno Duże – Cd, Zn). Na podstawie przeprowadzonych badań stwierdzono, że zrównoważone zarządzanie środowiskiem poprzez wyznaczanie sieci monitoringu osadów dennych zbiornika Ostrowy, Poraj i Dzierżno Duże powinno odbywać się w oparciu o indywidualne podejście badawcze w odniesieniu do każdego z obiektów. Przeprowadzone badania pozwoliły na stwierdzenie, że GIS ma istotny wpływ na podejmowania decyzji w zakresie zarządzania środowiskiem naturalnym.
Źródło:
Rocznik Ochrona Środowiska; 2020, Tom 22, cz. 2; 648-668
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geologia środowiska w PIG
Environmental geology at the Polish Geological Institute
Autorzy:
Pasieczna, Anna
Konon, Agnieszka
Kostrz-Sikora, Paulina
Powiązania:
https://bibliotekanauki.pl/articles/2076084.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
mapowanie geochemiczne
program ochrony środowiska
program gospodarki odpadami
regeneracja
Polska
geochemical mapping
environmental protection program
waste management program
reclamation
Polska
Opis:
Environmental geology deals with many issues closely relatedto the life of human beings. The most important directions of environmentalgeology developed in Poland include: geochemical mapping, environmental protection and waste management programs, and reclamation projects.Cartographic research was conducted using an appropriate scale of work, which enabled the determination of the geochemical background andanomalies throughout the whole country, in selected urban-industrialregions and in specific locations. Valuable information for the environment was also collected as a digital database in the form of a map at 1:50,000scale. Environmental protection programs are among the tools used to implement environmental protection policy at the level of administration of the commune, poviat and voivodship. When developing a document, the assessment of the state of the components of the environment is of key importance, as it is used to plan environmental strategies. Scientific and environmental data are used for evaluation.They must be analyzed and interpreted by experts. In addition to environmental protection programs, the Polish Geological Institutealso develops other documents on environmental issues. As part of the reclamation, liquidation of place of storage of hazardous plantprotection products was carried out all over the country and soils and landfills were cleaned.
Źródło:
Przegląd Geologiczny; 2020, 68, 5; 364--369
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena stopnia antropopresji wód podziemnych w rejonach poszukiwania i eksploatacji złóż węglowodorów
Assessment of the anthropopressure degree of groundwater in the areas of hydrocarbon exploration and exploitation
Autorzy:
Krogulec, Ewa
Sawicka, Katarzyna
Zabłocki, Sebastian
Powiązania:
https://bibliotekanauki.pl/articles/2076062.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
wody podziemne
monitoring dedykowany
złoża węglowodorów
zanieczyszczenie antropogeniczne
wskaźniki geochemiczne
groundwater
dedicated monitoring
hydrocarbon deposits
anthropogenic pollution
geochemical indicators
Opis:
The aim of the study was to propose a range of interpretation of the results of qualitative groundwater monitoring by using geochemical indicators to assess the degree of anthropogenic groundwater pollution. The location, scope and frequency of groundwater testing dedicated to the possibility of indicating the degree of pressure resulting from the activity in the field of hydrocarbon exploration and exploitation is proposed. On the basis of multistage monitoring research in the area of hydrocarbon exploration and exploitation, the qualitative groundwater base state was determined and change trends were characterized at each subsequent testing stage. Anthropogenic transformations of groundwater chemistry are the result of many overlapping factors, which is why the reason of water quality change is difficult to identify. The very statement of the presence of high values of physico-chemical parameters in waters does not have to prove the influence of the monitored object on their composition. It is proposed to use geochemical indicators: enrichment factor, pollution factor, geoaccumulation factor, and pollution load indicator to assess the degree of anthropogenic pollution of groundwater in the area of hydrocarbon exploration and exploitation. The geochemical indicators, which are proposed for use, enable the identification of substances of anthropogenic origin in waters and the detection of even the initial degree of anthropopressure on their composition in specific mining activities.
Źródło:
Przegląd Geologiczny; 2020, 68, 4; 242--248
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Dobroe 9 site: a stratified Early Neolithic complex in the upper Don River
Autorzy:
Yurkina, Elizaveta
Smol’yaninov, Roman
Kulichkov, Alexey
Kul’kova, Marianna
Zheludkov, Andrey
Yanish, Yevheniia
Shatrovaya, Diana
Powiązania:
https://bibliotekanauki.pl/articles/1366027.pdf
Data publikacji:
2020-12-24
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
Early Neolithic
Middle Don Culture
pottery
flint
stratigraphy
geochemical indication
radiocarbon analysis
Opis:
The Middle Don Culture, distributed within the Middle and Upper Don River area, is thought to be one of the earliest Eastern European Neolithic cultures, and is dated to the 6th–5th millennium BC. A group of Neolithic sites was found on the right shore of the Voronezh River, and has been named the “Dobroe sites”. The Dobroe 9 settlement is one of few sites in this region at which an assemblage of Middle Don Culture has been recorded in a clear stratigraphic position. The numerous faunal remains, ceramic complex and stone inventory found at this site allows for a reconstruction of the earliest stages of the Neolithic. The elaborated ceramic typology suggests a gradual transformation of the local culture. The particularity of sedimentation process and deposition of artefacts allowed a precise correlation of stone inventory types with early-Neolithic ceramic types. Preliminary reconstructions of palaeoclimate and episodes of human activity for this time period were implemented based on geochemical methods.
Źródło:
Acta Geographica Lodziensia; 2020, 110; 33-48
0065-1249
Pojawia się w:
Acta Geographica Lodziensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological analysis of heavy metal and radioactivity potential of Holocene sediments in Iznik Lake
Autorzy:
Yumun, Zeki U.
Kam, Erol
Powiązania:
https://bibliotekanauki.pl/articles/146352.pdf
Data publikacji:
2019
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
Iznik Lake
heavy metals
radionuclides
geochemical analyses
radionuclide determination
Opis:
In this study, the heavy metal and radioactive properties of Iznik Lake were investigated. Concentration values of the first (Ag, Bi, Mo, Sn, Se, Zn, As, B, Cd, Co, Cr, Cu, Ni, Pb, Pt and Sb) and second (Na, Mg, K, Ca, P, S, Fe, Al and Mn) group of elements in borehole 1 (BH-1) drilling did not show much variation from the top to the bottom of the drilling. Concentration values of the fi rst group of elements in borehole 2 (BH-2) drill samples decreased at higher levels of drilling. In addition, natural and anthropogenic radionuclides were measured by gamma spectrometry, and the results of environmental natural radioactivity of Iznik Lake and its surroundings were determined. In the measurement results, Ra-226 was found to be below the world average value at all locations. It is assumed that the determination of K-40 values above the average values was due to agricultural activities carried out intensively in the study area. Th-232 values were found to be below the world average value in drilling samples; Cs-137 values were below the background level in all samples. According to these results, the study area does not contain any unnatural radioactivity.
Źródło:
Nukleonika; 2019, 64, 3; 103-109
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy metal concentration and distribution in stream sediments of Ndongo River, Buea, Cameroon - environmental impact
Autorzy:
Tchounda, Teclaire
Mboudou, Germain Marie Monespérance
Agyingi, Christopher Mbaringong
Powiązania:
https://bibliotekanauki.pl/articles/1066167.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Buea
Heavy metal contamination
Igeo
Ndongo River
PLI
anthropogenic metal input
domestic waste
geochemical entity
pollution load index
stream sediments
Opis:
Thirty two active stream sediment samples were collected, panned and sieved from a 16km (500m spacing) section along Ndongo River, Buea. Sixteen of them were subjected to magnetic separation for the determination of heavy minerals under a microscope (KARL ZEISS IENA) and analyzed by XRF and AAS for As, Be, Cd, Co, Cu, Cr, Mo, Ni, Pb, Rb, Sb, Sc, Sn, Sr V, Zn, and Zr. The average element concentrations are 0.014, 64.45, 76.93, 94.52, 87.65, 147.79, 0.00, 77.00, 98.99, 40.37, 7.99, 24.70, 52.42, 1053.37, 285.46, 579.70 and 404.41ppm respectively. As (0.014 ppm) and Mo (0.001 ppm) are below l average concentrations in basalts while dispersed Be, Cd, Co, Cu, Cr, Ni, Pb, Sb, Sc, Sn, V, Zn values are mostly above tolerance limit in settlement areas and farmlands. Olivine with angular grains (1.5mm) and sub-hedral shape representing 10 vol. % is light green colored. Together with pyroxene (elongated, black colored with angular grains up to 0.7mm) are the most abundant minerals. Minor rutile with shiny luster is also present. R-mode factor analysis reveals Ni-Rb-V, Co–Cr–Pb–Zn, and Cu–Sr-Zr associations representing three geochemical entities related to agricultural (fertilizers) and settlement (domestic waste) areas. Correlation coefficients (r) vary from -0.84 (V, Sb) to 0.728 (Ni, Rb) and may indicate different sources of metal contamination. The calculated PLI (3.10 to 4.92) and Igeo (-7.37 to 9.18) of As, Be, Cd, Co, Cu, Cr, Mo, Ni, Pb, Rb, Sb, indicate metal pollution of River Ndongo sediments. The obtained classification is defined as low (As, Co, Cu, Cr, Mo, Ni, Sc, and V), partially (Co, Zn), moderately (Pb, Be) and highly to very highly (Sb, Sr, Cd) polluted. Natural and anthropogenic metal input assessment reveals that the dominantly basaltic lithologies in the area (pyroxene and olivine), the domestic and agricultural activities as well as urbanization processes of Buea are the main source of metal contamination.
Źródło:
World Scientific News; 2019, 131; 15-36
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 117

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