25 results on '"Andrea Ridošková"'
Search Results
2. Trophic distribution of mercury from an abandoned cinnabar mine within the Záskalská reservoir ecosystem (Czech Republic)
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Pavlína Pelcová, Jan Grmela, Andrea Ridošková, Radovan Kopp, Marie Hrůzová, and Ondřej Malý
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Mercury Compounds ,Health, Toxicology and Mutagenesis ,Fishes ,Water ,Fresh Water ,Mercury ,General Medicine ,Pollution ,Animals ,Humans ,Environmental Chemistry ,Ecosystem ,Water Pollutants, Chemical ,Czech Republic ,Environmental Monitoring - Abstract
The distribution of mercury species was studied in all aquatic ecosystem components (i.e., water, sediment, emergent aquatic plants, invertebrates and omnivorous and piscivorous fish) of the Záskalská water reservoir (Central Bohemia, Czech Republic) which is in the vicinity of an abandoned cinnabar mine. The results indicate that the transport of mercury from the cinnabar mine is the major source of mercury in the Záskalská reservoir. The legal maximum limit (0.07 μg/L) for total mercury concentration in water samples was exceeded only during rainy periods. The total mercury concentration in the surface sediments was in the range from 0.22 to 9.19 mg/kg in dry matter (up to 0.2% CH
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- 2022
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3. New insight into the biocompatibility/toxicity of graphene oxides and their reduced forms on Chlamydomonas reinhardtii
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Zuzana Bytešníková, Martina Koláčková, Markéta Dobešová, Pavel Švec, Andrea Ridošková, Jana Pekárková, Jan Přibyl, Petr Cápal, Dalibor Húska, Vojtěch Adam, and Lukáš Richtera
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Materials Science (miscellaneous) ,Public Health, Environmental and Occupational Health ,Safety, Risk, Reliability and Quality ,Safety Research - Published
- 2023
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4. A multimethodological evaluation of arsenic in the Zenne River, Belgium: Sources, distribution, geochemistry, and bioavailability
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Vendula Smolíková, Natacha Brion, Tianhui Ma, Vincent Perrot, Yue Gao, Pavlína Pelcová, Andrea Ridošková, Martine Leermakers, Analytical, Environmental & Geo-Chemistry, Biology, Chemistry, Faculty of Sciences and Bioengineering Sciences, and Earth System Sciences
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Diffusive gradients in thin-films ,Geologic Sediments ,Environmental Engineering ,Speciation ,Biological Availability ,Water ,Silicon Dioxide ,Pollution ,Arsenic ,sediment ,Belgium ,Zenne river ,Environmental Chemistry ,Waste Management and Disposal ,Water Pollutants, Chemical ,Environmental Monitoring - Abstract
The distribution and geochemistry of arsenic (As) in water and sediments of the Zenne River, a small urban river flowing through Brussels (Belgium), were assessed based on the results of 18 sampling campaigns performed between 2010 and 2021. In general, concentrations of As sharply increase between Vilvoorde and Eppegem and are up to 6–8 times higher in the section downstream of Eppegem in comparison to the upstream part of the Zenne. The monitoring surveys in which the grab water samples were taken at a 1-hour sampling frequency revealed that the large temporal variability in As concentrations found in the downstream part of the river is driven by the tidal cycle. The diffusive gradients in thin films (DGT) technique was used to assess the DGT labile As species in surface water and sediment porewater. Three DGT sorbents (Metsorb, Lewatit FO 36, and ZrO2) for the determination of total As were applied to compare their performance, and the 3-mercaptopropyl-functionalized silica (3-MFS) was used for the speciation of As(III) in porewater. Arsenic species are fully labile in surface waters as the DGT time-integrated concentrations of As were in good agreement with the average concentrations calculated from the grab samplings. In sediment porewaters, As is predominantly present as non-DGT labile species (66–93 %), and the DGT labile As fraction is dominated by As(III). Flux calculations evaluating the relative importance of different As sources to the Zenne River revealed the presence of a point source on the tributary Tangebeek, which contributes to 87 % of the As load carried by the Zenne River.
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- 2022
5. Bioavailability of mercury in contaminated soils assessed by the diffusive gradient in thin film technique in relation to uptake by Miscanthus × giganteus
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Andrea Ridošková, Vojtěch Adam, Aurélie Pelfrêne, Francis Douay, Vendula Smolikova, Pavlína Pelcová, and Analytical, Environmental & Geo-Chemistry
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010504 meteorology & atmospheric sciences ,Health, Toxicology and Mutagenesis ,Biological Availability ,chemistry.chemical_element ,010501 environmental sciences ,Poaceae ,Models, Biological ,01 natural sciences ,Soil ,Soil Pollutants ,Environmental Chemistry ,Miscanthus giganteus ,Thin film ,Chromatography, High Pressure Liquid ,0105 earth and related environmental sciences ,Contaminated soils ,biology ,Biological Transport ,Mercury ,Miscanthus ,biology.organism_classification ,Mercury (element) ,Rhizome ,Bioavailability ,chemistry ,Environmental chemistry ,Soil water ,Ion Exchange Resins ,Environmental Monitoring - Abstract
We assessed the relationship between the diffusive gradient in thin film (DGT) technique using the new ion-exchange resin Ambersep GT74 and the uptake of mercury (Hg) by a model plant cultivated on metal-contaminated agricultural soils under greenhouse conditions. Based on the total Hg content, 0.37 to 1.17% of the Hg passed to the soil porewater from the solid phase, and 2.18 to 9.18% of the Hg is DGT-available. These results were confirmed by calculating the R value (the ratio of the concentrations of bioavailable Hg measured by DGT and soil solution), which illustrated the strong bonding of Hg to the solid phase of soil and its extremely low mobility. Only inorganic Hg2+ species were found in the metal-contaminated agricultural soils, as determined by a high-performance liquid chromatography-cold vapor atomic fluorescence spectrometry speciation analysis. The Hg was distributed in Miscanthus × giganteus organs in the following order for all sampling sites: roots (55-82%) >> leaves (8-27%) > stems (7-16%) > rhizomes (4-7%). Environ Toxicol Chem 2019;38:321-328. © 2018 SETAC.
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- 2019
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6. Evaluation of mercury bioavailability and phytoaccumulation by means of a DGT technique and of submerged aquatic plants in an aquatic ecosystem situated in the vicinity of a cinnabar mine
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Andrea Ridošková, Pavlína Pelcová, Radovan Kopp, Dagmar Štěrbová, and Jan Grmela
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Environmental Engineering ,Health, Toxicology and Mutagenesis ,Elodea canadensis ,chemistry.chemical_element ,Biological Availability ,Bioconcentration ,Aquatic plant ,Water environment ,Environmental Chemistry ,Ecosystem ,biology ,Mercury Compounds ,Aquatic ecosystem ,fungi ,Public Health, Environmental and Occupational Health ,food and beverages ,General Medicine ,General Chemistry ,Ceratophyllum demersum ,Mercury ,biology.organism_classification ,Pollution ,Mercury (element) ,chemistry ,Environmental chemistry ,Bioaccumulation ,Environmental science - Abstract
The ability of submerged aquatic plants (Elodea canadensis, Myriophyllum spicatum, Ceratophyllum demersum) and a natant plant (Eichhornia crassipes) to bioaccumulate mercury was evaluated in a laboratory experiment as well as in a real aquatic ecosystem situated in the vicinity of a cinnabar mine. Moreover, the ability of the diffusive gradients in the thin films technique (DGT) to predict mercury bioavailability for selected aquatic plants was tested. The submerged plants had sufficient bioaccumulation capacity for long-term phytoaccumulation of mercury in a real aquatic ecosystem. The determined bioaccumulation factor was greater than 1000. On average, the submerged plant leaves accumulated 13 times more mercury than the leaves of the natant aquatic plants. Chlorides at concentrations up to 200 mg/L had no statistically significant effect on mercury accumulation, nevertheless, the presence of humic acid in the water environment resulted in its significant (p 0.002) decrease. A strong positive correlation (r 0.66) was determined between mercury concentration in the input parts (leaves and/or roots) of the aquatic plants and the flow of mercury into DGT units.
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- 2021
7. Potentials of Miscanthus x giganteus for phytostabilization of trace element-contaminated soils: Ex situ experiment
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Francis Douay, Brice Louvel, Christophe Waterlot, Karim Suhail Al Souki, Andrea Ridošková, Bertrand Pourrut, Florien Nsanganwimana, and Aurélie Pelfrêne
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Health, Toxicology and Mutagenesis ,0211 other engineering and technologies ,Biomass ,02 engineering and technology ,Miscanthus ,010501 environmental sciences ,Poaceae ,01 natural sciences ,Environmental pollution ,Metals, Heavy ,Soil Pollutants ,GE1-350 ,0105 earth and related environmental sciences ,Total organic carbon ,021110 strategic, defence & security studies ,Rhizosphere ,biology ,Energy crop ,Plant Stems ,Chemistry ,Trace element mobility ,Public Health, Environmental and Occupational Health ,Excluder ,General Medicine ,Soil carbon ,biology.organism_classification ,Pollution ,Environmental sciences ,Plant Leaves ,Biodegradation, Environmental ,Agronomy ,TD172-193.5 ,Soil water ,Shoot ,Phytostabilization - Abstract
Phytomanagement is proposed as a cost-effective and environmentally-friendly suggestion for sustainable use of large metal-contaminated areas. In the current work, the energy crop miscanthus (Miscanthus × giganteus) was grown in ex situ conditions on agricultural soils presenting a Cd, Pb and Zn contamination gradient. After 93 days of culture, shoot and root growth parameters were measured. Soils and plants were sampled as well to study the TE accumulation in miscanthus and the effects of this plant on TE mobility in soils. Results demonstrated that miscanthus growth depended more on the soils silt content rather than TE-contamination level. Moreover, soil organic carbon at T93 increased in the soils after miscanthus cultivation by 25.5–45.3%, whereas CaCl2-extractible TEs decreased due to complex rhizosphere processes driving plant mineral uptake, and organic carbon inputs into the rhizosphere. In the contaminated soils, miscanthus accumulated Cd, Pb and Zn mainly in roots (BCF in roots: Cd '' Zn > Pb), while strongly reducing the transfer of these elements from soil to all organs and from roots to rhizomes, stems and leaves (average TFs: 0.01–0.06, 0.11–1.15 and 0.09–0.79 corresponding to Cd, Pb and Zn respectively). Therefore, miscanthus could be considered a TE-excluder, hence a potential candidate crop for coupling phytostabilization and biomass production on the studied Metaleurop TE-contaminated soils.
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- 2020
8. Health Risk Assessment of Mercury Contaminated Forest Mushrooms from the Czech and Slovak Republics
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Andrea Ridošková, Klaudia Dudášová, Pavlína Pelcová, and Jana Hrachovinová
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- 2020
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9. Využití techniky difúzního gradientu v tenkém filmu pro hodnocení arsenu ve vodních ekosystémech
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Vendula Smolikova, Pavlína Pelcová, Andrea Ridošková, Martine Leermakers, and Analytisch- Milieu- & Geo-Chemie
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V rámci předkládaného příspěvku je představeno využití techniky difúzního gradientu v tenkém filmu (DGT) pro hodnocení arsenu ve vodních ekosystémech. Tato pasivní vzorkovací technika využívající sorpční gel s obsahem ionexu Lewatit FO 36, byla pro účely dlouhodobého monitoringu kontaminace arsenem aplikována in-situ ve vodní nádrži Záskalská (Brdy, Česká republika) a dále byla využita pro hodnocení biologické dostupnosti arsenu ve vzorcích vod minerálních pramenů Hronovka a Regnerka. Shoda mezi koncentrací arsenu stanovenou ve vodě metodou AAS a pomocí techniky DGT byla 91,1% i po 49 dnech aplikace. Arsen přirozeně obsažený v obou vzorcích minerálních vod byl plně dostupný pro techniku difúzního gradientu v tenkém filmu a lze jej tedy považovat za biologicky dostupný.
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- 2020
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10. Evaluation of mercury bioavailability to vegetables in the vicinity of cinnabar mine
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Andrea Ridošková, Jana Hrachovinová, Jan Grmela, and Pavlína Pelcová
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010504 meteorology & atmospheric sciences ,Soil test ,Health, Toxicology and Mutagenesis ,chemistry.chemical_element ,Biological Availability ,010501 environmental sciences ,Toxicology ,01 natural sciences ,Soil ,Vegetables ,Soil Pollutants ,Legume ,0105 earth and related environmental sciences ,biology ,Mercury Compounds ,food and beverages ,General Medicine ,Mercury ,biology.organism_classification ,Pollution ,Hazard quotient ,Bioavailability ,Mercury (element) ,Cinnabar ,chemistry ,Environmental chemistry ,Soil water ,Environmental science ,Spinach - Abstract
Knowledge of the concentration of the bioavailable forms of mercury in the soil is necessary, especially, if these soils contain above-limit total mercury concentrations. The bioavailability of mercury in soil samples collected from the vicinity of abandoned cinnabar mines was evaluated using diffusive gradients in the thin films technique (DGT) and mercury phytoaccumulation by vegetables (lettuce, spinach, radish, beetroot, carrot, and green peas). Mercury was accumulated primarily in roots of vegetables. The phytoaccumulation of mercury into edible plant parts was site-specific as well as vegetable species-specific. The mercury concentration in edible parts decreased in the order: spinach leaf ≥ lettuce leaf ≥ carrot storage root ≥ beetroot storage root > radish storage root > pea legume. The translocation index as well as the target hazard quotient indicate the possible usability of soils from the vicinity of abandoned cinnabar mines for planting pod vegetables (peas). A strong positive correlation (r = 0.75 to 0.92, n > 30, p < 0.05) was observed between mercury concentration in secondary roots, the storage roots, leaves of vegetables and the flux of mercury from soil to the DGT units, and the effective concentration of mercury in soil solutions.
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- 2020
11. Fractionation Analysis of Mercury in Soils: A Comparison of Three Techniques for Bioavailable Mercury Fraction Determination
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Jana Hrachovinová, Pavlína Pelcová, Andrea Ridošková, and Jan Grmela
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Health, Toxicology and Mutagenesis ,chemistry.chemical_element ,Biological Availability ,Fractionation ,010501 environmental sciences ,Chemical Fractionation ,01 natural sciences ,Diffusion ,chemistry.chemical_compound ,Soil ,Environmental Chemistry ,Soil Pollutants ,0105 earth and related environmental sciences ,Contaminated soils ,Mercury sulfide ,010401 analytical chemistry ,Mercury ,Diffusive gradients in thin films ,0104 chemical sciences ,Mercury (element) ,Bioavailability ,Solutions ,chemistry ,Cinnabar ,Environmental chemistry ,Soil water ,Environmental Monitoring - Abstract
Knowledge of the fractionation of mercury in soils in the vicinity of abandoned cinnabar mines is essential for assessing the usability of soils for the cultivation of agriculturally important crops. Two different sequential extraction methods and the technique of diffusive gradients in thin films (DGT) were applied and compared for fractionation of mercury in soils from mercury-contaminated sites intended for farming purposes. The mercury found in these soils was primarily in the form of mercury sulfide (58.6-83.9%), followed by 6.7 to 15.4% of organically bound mercury and 2.9 to 23.2% of elemental mercury. Up to 10.3% of labile mercury species were determined by both sequential extraction methods in these soils. However, only 0.01 to 0.13% of mercury was determined as a bioavailable fraction using the DGT technique. Both sequential extraction methods tested for the fractionation analysis of mercury in contaminated soils were in excellent agreement. The content of the mobile (labile) mercury determined by the sequential extraction methods was statistically significantly higher (p
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- 2020
12. WAYUSA: CARACTERÍSTICAS BIOQUÍMICAS Y ASPECTOS ESPECÍFICOS CULTURALES DE SU USO
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Andrea Ridošková, Lenka Silvestrová, Miroslav Horák, Ronal Chaca, Klaudie Kovářová, and Mariah Cruz de Souza Tronco
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- 2020
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13. New insights into mechanisms of copper nanoparticle toxicity in freshwater algae Chlamydomonas reinhardtii: Effects on the pathways of secondary metabolites
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Zuzana Bytesnikova, Pavel Chaloupsky, Pavel Svec, Dalibor Huska, Lukas Richtera, Petr Capal, Andrea Ridošková, Vojtech Adam, Natalia Cernei, Borivoj Klejdus, Martina Kolackova, and Anna Janova
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Antioxidant ,biology ,medicine.medical_treatment ,Chlamydomonas ,Chlamydomonas reinhardtii ,biology.organism_classification ,Protocatechuic acid ,Lipid peroxidation ,chemistry.chemical_compound ,chemistry ,Chlorophyll ,medicine ,Biophysics ,Bioassay ,Suberic acid ,Agronomy and Crop Science - Abstract
The effects of copper nanoparticles (Cu-NPs), including their stability in the medium, were studied with the green unicellular algae Chlamydomonas reinhardtii (CC-125). Cu-NPs were synthesized and characterized. Cu-NP particles were uniform, regular, and largely spherical, and they had smooth surfaces; the average size was estimated to be 137.4 ± 2.1 nm. Chlamydomonas cells were cultivated for 96 h under controlled conditions in the presence of Cu-NPs, according to OECD guidelines, and then subjected to toxicological bioassays. Based on scanning electron microscopy (SEM) observations, the effects of Cu-NPs resulted in part from the dissolution of nanoparticles (NPs) and the action of copper itself, which shows the importance of studying NP stability in the testing environment. In this assay, deleterious effects were enhanced by increasing Cu-NP concentrations (5, 10, 25, 50, and 100 mg/L). Concentrations higher than 25 mg/L exhibited extreme toxicity. We confirmed the known toxic effects of metal NPs, namely, growth inhibition, reduction of chlorophyll levels in cells, cell penetration and increased ROS production. Attention was also paid to select underexplored metabolites, which were studied with a LC-MS/MS system. Treatments caused changes in metabolites profiles, and levels of p-hydroxybenzaldehyde and protocatechuic acid were especially enhanced, suggesting their positive roles in the antioxidant defence response. Furthermore, a repeatable increase in suberic acid levels was observed for various stress conditions tested, and we expect that this was the result of lipid peroxidation.
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- 2021
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14. Prediction of mercury bioavailability to common carp (Cyprinus carpio L.) using the diffusive gradient in thin film technique
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Jan Mareš, Pavlína Pelcová, Hana Dočekalová, Andrea Ridošková, Petra Vičarová, Eva Postulkova, and Radovan Kopp
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Gills ,Gill ,Carps ,Environmental Engineering ,Health, Toxicology and Mutagenesis ,Biological Availability ,chemistry.chemical_element ,010501 environmental sciences ,Kidney ,Positive correlation ,01 natural sciences ,Cyprinus ,Diffusion ,Common carp ,Animals ,Environmental Chemistry ,Carp ,0105 earth and related environmental sciences ,biology ,Muscles ,010401 analytical chemistry ,Public Health, Environmental and Occupational Health ,Mercury ,General Medicine ,General Chemistry ,biology.organism_classification ,Pollution ,0104 chemical sciences ,Mercury (element) ,Bioavailability ,Kinetics ,chemistry ,Environmental chemistry ,Bioaccumulation ,sense organs - Abstract
The mercury bioaccumulation by common carp (Cyprinus carpio L.) tissues (gills, skin, eyes, scales, muscle, brain, kidneys, liver, and spleen) and the capability of the diffusive gradient in thin film (DGT) technique to predict bioavailability of mercury for individual carp's tissues were evaluated. Carp and DGT units were exposed to increasing concentrations of mercury (Hg2+: 0 μg L-1, 0.5 μg L-1, 1.5 μg L-1 and 3.0 μg L-1) in fish tanks for 14 days. In the uncontaminated fish group, the highest mercury concentration was determined in the muscle tissues and, in fish groups exposed to mercury, the highest mercury concentration was determined in the detoxification (kidneys) and input (gills) organs. A strong and positive correlation between the rate of mercury uptake by the DGT technique and the rate of mercury accumulation by fish tissues (gills, skin, scales, and eyes) was observed.
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- 2017
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15. Simultaneous determination of arsenic and uranium by the diffusive gradients in thin films technique using Lewatit FO 36: Optimization of elution protocol
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Vendula Smolíková, Pavlína Pelcová, Martine Leermakers, Andrea Ridošková, Analytical, Environmental & Geo-Chemistry, Earth System Sciences, and Chemistry
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inorganic chemicals ,Chromatography ,Elution ,Diffusive gradients in thin films technique ,010401 analytical chemistry ,arsenic ,technology, industry, and agriculture ,chemistry.chemical_element ,Sorption ,02 engineering and technology ,Uranium ,021001 nanoscience & nanotechnology ,01 natural sciences ,Diffusive gradients in thin films ,0104 chemical sciences ,Analytical Chemistry ,uranium ,chemistry ,Elution procedure ,Phase (matter) ,0210 nano-technology ,Selectivity ,Arsenic - Abstract
The sorption ability of Lewatit FO 36-DGT resin gel, which has been developed for arsenic determination, towards uranium was tested by batch experiments within this study for the first time. Since the uptake efficiency of uranium was 99.0 ± 0.4% and the maximum uptake capacity was not achieved even at the U spike of 1250 μg in the solution, the Lewatit FO 36 resin seems to be a suitable binding phase for DGT resin gels for the determination of uranium. The resin gel also does not display any significant sorption selectivity in favour of one element over another. A novel protocol for simultaneous elution of arsenic and uranium from Lewatit FO 36 resin gel was therefore proposed in this study. The elution efficiencies of 90.3 ± 3.9% and 85.2 ± 3.1% for As and U, respectively, were obtained using 5 mL of 1 M NaOH at 70 °C for 24 h. The comparison with the original elution protocol using microwave-assisted elution by 0.25 M NaOH and 0.17 M NaCl at 130 °C for 16 min indicates, that the novel elution protocol provides good results in the performance of arsenic elution and, in addition, allows simultaneous elution of uranium. Moreover, the elimination of NaCl from the elution process allows a fast and simple analysis of both elements using ICP-MS, and therefore, the Lewatit FO 36-DGT technique can become more commonplace among laboratories without the need to modify the analytical method as proposed in the original study.
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- 2021
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16. Heavy metals in the common carp (Cyprinus carpio L.) from three reservoirs in the Czech Republic
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Hana Dočekalová, Pavlína Pelcová, Andrea Ridošková, and Petra Vičarová
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0106 biological sciences ,Czech ,Veterinary medicine ,biology ,Heavy metals ,010501 environmental sciences ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,language.human_language ,Cyprinus ,Common carp ,language ,0105 earth and related environmental sciences ,Food Science - Published
- 2016
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17. Antioxidant status of rats’ blood and liver affected by sodium selenite and selenium nanoparticles
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Pavel Kopel, Jiri Skladanka, Lenka Urbankova, Pavel Horky, Vendula Smolikova, Vojtech Adam, Pavel Nevrkla, Natalia Cernei, Magdalena Pribilova, Zuzana Lackova, Andrea Ridošková, Josef Hedbavny, and Analytical, Environmental & Geo-Chemistry
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0301 basic medicine ,inorganic chemicals ,Antioxidant ,genetic structures ,medicine.medical_treatment ,chemistry.chemical_element ,lcsh:Medicine ,010501 environmental sciences ,Biochemistry ,01 natural sciences ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,chemistry.chemical_compound ,Animal nutrition ,medicine ,Food science ,Agricultural Science ,Nutrition ,0105 earth and related environmental sciences ,Chemistry ,General Neuroscience ,lcsh:R ,food and beverages ,Rat strain ,Dietary Selenium ,General Medicine ,Glutathione ,030104 developmental biology ,Toxicity ,Rat ,General Agricultural and Biological Sciences ,Selenium ,Selenium nanoparticles - Abstract
Background Selenium is an essential element; however, at higher doses, it can be toxic. Therefore, alternative nanotechnological solutions are required to overcome toxicological issues, rather than conventional alternatives. Nanoparticles show new and promising properties that may be able to suppress toxicity while maintaining the positive effects of selenium on an organism. The aim of the experiment was to determine the influence of sodium selenite and selenium nanoparticles (SeNPs) on the antioxidant status of rats. Methods The males of the outbreed rat strain Wistar albino were selected as a model organism. Animals were fed different forms of selenium. The control group was given a mixture without selenium addition, whereas other groups were fed a mixture containing sodium selenite, Se-49, and Se-100 SeNPs respectively. The duration of the trial was 30 days. Results Analysis of blood and liver was performed where the concentration of reduced (GSH) and oxidised (GSSG) glutathione, and total selenium content were measured. In the liver, a significant reduction in GSSG was found for all experiment groups. Blood samples showed a significant reduction in GSH and an increase in GSSG. Discussion These results show that SeNPs may be an alternative to dietary selenium for animal organisms.
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- 2018
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18. Environmental assessment of the effects of a municipal landfill on the content and distribution of heavy metals in Tanacetum vulgare L
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Jakub Elbl, Magdalena Daria Vaverková, Jindřich Kynický, Andrea Ridošková, Stanislav Bartoň, Maja Radziemska, Pavlína Pelcová, Martin Brtnický, and Dana Adamcová
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Environmental Engineering ,Tanacetum vulgare L ,Health, Toxicology and Mutagenesis ,Iron ,Environmental pollution ,010501 environmental sciences ,01 natural sciences ,Plant Roots ,Metal ,Soil ,Tanacetum ,Metals, Heavy ,Environmental Chemistry ,Humans ,Soil Pollutants ,0105 earth and related environmental sciences ,Chemistry ,Public Health, Environmental and Occupational Health ,Environmental engineering ,Heavy metals ,04 agricultural and veterinary sciences ,General Medicine ,General Chemistry ,Contamination ,Pollution ,Soil contamination ,Waste Disposal Facilities ,Stalk ,Environmental chemistry ,visual_art ,040103 agronomy & agriculture ,visual_art.visual_art_medium ,0401 agriculture, forestry, and fisheries ,Environmental Pollution ,Environmental Monitoring - Abstract
Heavy metal pollution is an important concern because of its potential to affect human health. This study was conducted to analyze plants growing on a landfill body and in its surroundings to determine their potential for heavy metal accumulation. In addition, the enrichment coefficient (EC) for the plant/soil system was used for determining the environmental contamination from a landfill in terms of heavy metal accumulation. The samples were taken in 2013-2014. Of the analyzed metals, iron achieved the highest values in the samples, i.e. - stalk (103.4-6564.6 mg/kg DM), roots (6563.6-33,036.6 mg/kg DM), leaf (535.1-11,275 mg/kg DM) and soil (12,389-39,381.9 mg/kg DM). The highest concentrations were determined in 2013 for Fe, Mn and Zn. Iron achieved the highest concentrations in the years 2013-2014. Next, EC values were then calculated, with the highest noted for Cd. Cd, as well as Cr, Ni and Zn are accumulated mostly in the leaves, whereas Co, Cu, Fe, Hg, Mn and Pb are accumulated mainly in the roots of T. vulgare.
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- 2017
19. Prediction of cadmium, lead and mercury availability to plants: comparison between diffusive gradient in thin films technique measurement and soil grown plants
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Andrea Ridošková, Hana Dočekalová, and Pavlína Pelcová
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Inorganic Chemistry ,Cadmium ,Ecology ,chemistry ,Health, Toxicology and Mutagenesis ,Environmental chemistry ,Environmental science ,chemistry.chemical_element ,Thin film ,Pollution ,Mercury (element) - Published
- 2016
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20. Size-related cytotoxicological aspects of polyvinylpyrrolidone-capped platinum nanoparticles
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Pavlina Adam, Vojtech Adam, Zbynek Heger, Petr Michalek, Jindrich Kynicky, Pavel Kopel, Andrea Ridošková, Martin Brtnicky, Lukas Richtera, Hana Buchtelova, Sona Krizkova, David Hynek, Vladislav Strmiska, and Simona Dostalova
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Polymers ,Cells ,Metal Nanoparticles ,Nanotechnology ,02 engineering and technology ,010402 general chemistry ,Toxicology ,Platinum nanoparticles ,01 natural sciences ,Cell Line ,LNCaP ,medicine ,Metallothionein ,Humans ,Particle Size ,Cytotoxicity ,Platinum ,Cisplatin ,chemistry.chemical_classification ,Reactive oxygen species ,Polyvinylpyrrolidone ,Chemistry ,Povidone ,General Medicine ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Biophysics ,Nanomedicine ,0210 nano-technology ,Reactive Oxygen Species ,Food Science ,medicine.drug - Abstract
The nanotechnological concept is based on size-dependent properties of particles in the 1–100 nm range. Nevertheless, the connection between their size and effect is still not clear. Thus, we focused on reductive colloidal synthesis, characterization and biological testing of Pt nanoparticles (PtNPs) capped with biocompatible polymer polyvinylpyrrolidone (PVP). Synthesized PtNPs were of 3 different primary sizes (approx. ∼10; ∼14 and > 20 nm) and demonstrated exceptional haemocompatibility. In vitro treatment of three different types of malignant cells (prostate – LNCaP, breast – MDA-MB-231 and neuroblastoma – GI-ME-N) revealed that even marginal differences in PtNPs diameter resulted in changes in their cytotoxicity. The highest cytotoxicity was observed using the smallest PtNPs-10, where 24IC 50 was lower (3.1–6.2 μg/mL) than for cisplatin (8.1–19.8 μg/mL). In contrast to MDA-MB-231 and LNCaP cells, in GI-ME-N cells PtNPs caused noticeable changes in their cellular structure without influencing their viability. Post-exposure analyses revealed that PtNPs-29 and PtNPs-40 were capable of forming considerably higher amount of reactive oxygen species with consequent stimulation of expression of metallothionein (MT1/2 and MT3), at both mRNA and protein level. Overall, our pilot study demonstrates that in the nanoscaled world even the smallest differences can have crucial biological effect.
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- 2016
21. Determination of heavy metals in fish products
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Vendula Smolikova, Andrea Ridošková, Pavlína Pelcová, and Analytical, Environmental & Geo-Chemistry
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Cadmium, lead and mercury contents in fish were studied. Fresh and frozen fish from 17 FAO localities were bought in Czech markets. Atomic absorption spectrometry technique was used for determination of cadmium, lead and mercury concentration. Ten samples exceeded the maximum permissible limit for mercury (0.5 mg/kg or 1 mg/kg for selected fish species) and three fish samples exceeded the maximum limit for cadmium (0.05 mg/kg) set by Commission Regulation (EU) No1881/2006. The limit of lead concentration (0.3 mg/kg) was not exceeded in any fish sample. This study shows that fish samples of marlin (Tetrapturus albidus) and swordfish (Xiphias gladius) are one of the most contaminated fish which can pose a great risk for human health after consumption. Because mercury and cadmium contents in some samples were higher than maximum limits recommended by FAO/WHO, our research led to withdraw of some batches of the fish from the Czech markets.
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- 2016
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22. The potential of diffusive gradients in thin films (DGT) technique as a monitoring tool for uranium in the aquatic environment
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Vendula Smolikova, Pavlína Pelcová, Andrea Ridošková, Martine Leermakers, Chemistry, and Analytical, Environmental & Geo-Chemistry
- Abstract
Since the majority of the planet's surface is covered in water, which is an essential premise of life on Earth, the issue of its pollution receives nowadays increasing attention from researchers as well as the decision-makers and public. Although the trends in water pollution monitoring have turned over the years towards microplastic or organic pollutants such as antibiotics, hormones, pesticides, or drugs, monitoring of trace elements remains at the centre of research attention. This is not only because of the increasing pollution by toxic trace elements and their persistent and bioaccumulative nature in the environment but also because of the need to understand the biogeochemical behaviour of those elements that represent essential nutrients in the aquatic environment.The diffusive gradients in thin films (DGT) is a passive sampling technique that can not only overlap the lack of knowledge in the biogeochemical cycling of trace elementsand their bioavailability for living organisms but also represent a useful tool for long-term monitoring of trace metal concentrations in-situ. The field application of newly developed DGT technique designs utilizing different sorbents is a crucial part of its validation. Therefore,we present development in the use of the DGT technique for the evaluation of uranium concentrations in the aquatic environment that was performed in the Scheldt estuary. The salinity gradient found in estuaries represents an ideal location for evaluation of the DGT technique performance which may be hampered by the complex nature of seawater in contrary to freshwaters. In this work,we provide a comparison of different DGT designs utilizing various sorbents (i.e., Chelex-100, Diphonix, Lewatit FO 36, and PIWBA)that were deployed in water along the Scheldt estuary. Results show that an improper selection of the binding phase can lead to providing skewed results that do not correspond to reality. On the contrary, the use of sorbents with high selectivity for the targeted analyte that have been thoroughly evaluated in a wide range of natural conditions may provide a DGT design that has the potential not only to quantify the labile fraction of uranium that may pose a risk to biota but may be used as a long-term monitoring passive sampler in seawater.
23. INFLUENCE OF HUMIC ACID AND SODIUM CHLORIDE ON THE UPTAKE OF MERCURY BY THE COMMON CARP (CYPRINUS CARPIO L.)
- Author
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Vicarova, Petra, Docekalova, Hana, Pelcova, Pavlina, Mares, Jan, Kopp, Radovan, Postulkova, Eva, and Andrea Ridošková
24. EFFECT OF COPPER ON SECONDARY METABOLISM OF MICROALGAE SCENEDESMUS QUADRICAUDA
- Author
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Strejckova, Aneta, Dvorak, Marek, Hynstova, Veronika, Hedbavny, Josef, Andrea Ridošková, Klejdus, Borivoj, and Huska, Dalibor
25. Cadmium(II) and Zinc(II) Ions Effects on Maize Plants revealed by Spectroscopy and Electrochemistry
- Author
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Andrea Ridošková, Sobrova, Pavlina, Krystofova, Olga, Sochor, Jiri, Zitka, Ondrej, Babula, Petr, Adam, Vojtech, Docekalova, Hana, and Kizek, Rene
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