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Heavy metals contamination of selected Brno city localities
Debnárová, Andrea ; Adamec, Vladimír (referee) ; Doležalová Weissmannová, Helena (advisor)
This thesis is focused on the degree of soil contamination with heavy metals in urban area of Brno. Samples were collected in three periods from October 2009 to March 2010, to represent different seasons and their impact on the concentration of heavy metals in examined soil. Ten locations was chosen, each with different level of concentration, starting with busy traffic area where the concentration of means was high continuing to areas located around habitation or parks. As result four elements were determined in every sample: Cu, Cd, Hg and Pb. Presence of copper and lead were detected by flame atomic absortion spectroscopy (F-AAS) and, cadmium by the help of electrothermal atomic absortion spectroscopy (ET-AAS). For the determination of mercury was used advanced mercury analyzer (AMA).
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Interactions between microplastics and heavy metals in the aquatic environment
Ottová, Michaela ; Pavlovský, Jiří (referee) ; Doležalová Weissmannová, Helena (advisor)
This diploma thesis deals with the adsorption of heavy metal ions on the microplastic. Specifically, lead, chromium, zinc, copper, mercury and polyethylene terephthalate was chosen as the plastic representative. Atomic absorption spectrometry (F-AAS, AMA) and FTIR with method ATR were used for the analysis. The aim of this work was to perform selected adsorption experiments, to determine the adsorption kinetics and the maximum amount adsorbed. Subsequently, the most suitable kinetic and isothermal model was determined for each element and the characteristic parameters were calculated.
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Assessment the impact of the application of excavated sediments from the dam Luhačovice on the content of risk elements in arable soil
Kratěnová, Pavla ; Komendová, Renata (referee) ; Řezáčová, Veronika (advisor)
This diploma thesis focuses on an issue concerning an excavated sediment application on an arable soil and its impact on the soil quality based on a particular case of a deposition of the sediment from the dam Luhačovice on an adjacent agricultural area. The theoretical part of this thesis is focused on a soil and sediment characteristics and functions, contained risk elements, sampling methods, determination possibilities of particular risk elements and a description of conditions which emerged from a need for the deposition of sediment obtained during scavenging of the dam Luhačovice. In the experimental part was described the process of sampling, samples processing and determining of concentration values for chosen risk elements (Cd, Cu, Hg, Ni, Pb) using flame or electrothermal atomic absorption spectrometry methods. This part also contains an evaluation of obtained results and a validation of an approval for the sediment deposition.
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Plant bioindicators of heavy metals
Pecinová, Eliška ; Doležalová Weissmannová, Helena (referee) ; Komendová, Renata (advisor)
The urban areas are exposed to high risk of contamination, and some of the plant species can indicate this contamination. For this study, plants which can accumulate heavy metals and meet the requirements for bioindicators were chosen. Lichens, moss, birch, linden, and yew were chosen as bioindicators. Plant samples were collected from the specified localities in Brno, both with and without heavy traffic, then analysed by atomic absorption spectrometry for the contents of Cd, Cu, Hg, Pb and Zn. Copper (max 47,7 mgkg-1) and zinc (max 200 mgkg-1) were detected in concentrations higher than the lower border of potential phytotoxic concentrations. Lichens and mosses were proved as the best bioindicators for most of the contaminants (Cu, Hg, Pb), except for zinc, which was indicated by birch. Linden wasn’t suitable for biomonitoring. The result concentrations in bioindicators were very variable among localities, without visible effect of traffic load, which implies other factors, which outweighed factors of contamination from the nearby traffic.
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Interactions between microplastics and heavy metals in the aquatic environment
Ottová, Michaela ; Pavlovský, Jiří (referee) ; Doležalová Weissmannová, Helena (advisor)
This diploma thesis deals with the adsorption of heavy metal ions on the microplastic. Specifically, lead, chromium, zinc, copper, mercury and polyethylene terephthalate was chosen as the plastic representative. Atomic absorption spectrometry (F-AAS, AMA) and FTIR with method ATR were used for the analysis. The aim of this work was to perform selected adsorption experiments, to determine the adsorption kinetics and the maximum amount adsorbed. Subsequently, the most suitable kinetic and isothermal model was determined for each element and the characteristic parameters were calculated.
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Plant bioindicators of heavy metals
Pecinová, Eliška ; Doležalová Weissmannová, Helena (referee) ; Komendová, Renata (advisor)
The urban areas are exposed to high risk of contamination, and some of the plant species can indicate this contamination. For this study, plants which can accumulate heavy metals and meet the requirements for bioindicators were chosen. Lichens, moss, birch, linden, and yew were chosen as bioindicators. Plant samples were collected from the specified localities in Brno, both with and without heavy traffic, then analysed by atomic absorption spectrometry for the contents of Cd, Cu, Hg, Pb and Zn. Copper (max 47,7 mgkg-1) and zinc (max 200 mgkg-1) were detected in concentrations higher than the lower border of potential phytotoxic concentrations. Lichens and mosses were proved as the best bioindicators for most of the contaminants (Cu, Hg, Pb), except for zinc, which was indicated by birch. Linden wasn’t suitable for biomonitoring. The result concentrations in bioindicators were very variable among localities, without visible effect of traffic load, which implies other factors, which outweighed factors of contamination from the nearby traffic.
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Dying as a story (several solutions)
Kloudová, Daniela ; Peterka, Josef (advisor) ; Klumparová, Štěpánka (referee)
The dissertation aims at showing the differences in dealing with the death issue in characteristic works of art of both Czech and world literature. Above all, it pursues the comparison of two novels Život střídá smrt ("Life Becomes Death") by Petr Prouza and Nebe nemá dno ("Heaven is Bottomless") by Hana Andronikova. Both unique books belong to key Czech novels with the topic of death. Moreover, both of them deal with death from the point of personal experience, which means they are strongly autobiographical. The dissertation concentrates on creative processes and topical aspects, grasps autobiographical elements of both novels and all the identities and differences in the approach to the same topic. Therefore, the dissertation is devoted to listing the works of art dealing with death, further on to the analyses, interpretation and comparison of the novels Život střídá smrt ("Life Becomes Death") and Nebe nemá dno ("Heaven is Bottomless") together with the reflexion of reader's experience.
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Assessment the impact of the application of excavated sediments from the dam Luhačovice on the content of risk elements in arable soil
Kratěnová, Pavla ; Komendová, Renata (referee) ; Řezáčová, Veronika (advisor)
This diploma thesis focuses on an issue concerning an excavated sediment application on an arable soil and its impact on the soil quality based on a particular case of a deposition of the sediment from the dam Luhačovice on an adjacent agricultural area. The theoretical part of this thesis is focused on a soil and sediment characteristics and functions, contained risk elements, sampling methods, determination possibilities of particular risk elements and a description of conditions which emerged from a need for the deposition of sediment obtained during scavenging of the dam Luhačovice. In the experimental part was described the process of sampling, samples processing and determining of concentration values for chosen risk elements (Cd, Cu, Hg, Ni, Pb) using flame or electrothermal atomic absorption spectrometry methods. This part also contains an evaluation of obtained results and a validation of an approval for the sediment deposition.
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