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Presence of heavy metals in vicinity of the roads in Brno
Brzobohatý, Jan ; Adamec, Vladimír (referee) ; Doležalová Weissmannová, Helena (advisor)
Diploma thesis deals with the risk assessment of metals in soils near roads in the city of Brno. For samples collection has been chosen twenty-five localities which were divided into five groups depending on the traffic load, in order to compare the impact of transport on the risk of soil contamination with metals. In the soil samples were determined levels of six hazardous metals (Cd, Hg, Pb, Zn, Ni, Cu). Lead, zinc, nickel and copper were determined by the flame atomic absorption spectrometry (F-AAS), cadmium by the electrotermic atomic absorption spectrometry (ET-AAS) and mercury by the advanced mercury analyzer AMA 254.
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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 of soils and sediments contamination by heavy metals in the region Jihlava river
Marek, Milan ; Adamec, Vladimír (referee) ; Doležalová Weissmannová, Helena (advisor)
This diploma thesis deals with a potential contamination of hazardous metals of soil and sediments. The metals cadmium, copper, lead and mercury were chosen, their specification, limited concentration and methods of determination are also described in thesis. City Jihlava and its surroundings were chosen for evaluating pollution of the soil and sediments in this area. In collected samples of the soil and sediments presence of copper, cadmium, lead and mercury were detected via atomic absorption spectrometry (F-AAS, ET-AAS, AMA 254). The metal pollution of soils and sediments by hazardous elements in Jihlava River and in Jihlava region was evaluated.
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Assessment of soils using pollution indices
Satola, Ondřej ; Pavlovský, Jiří (referee) ; Doležalová Weissmannová, Helena (advisor)
Subject of this diploma thesis is analysis of selected heavy metals in soils which are exposed to long-time cause of contaminants from metallurgical industry in localities Třinec and Ostrava. For assessment of the contamination, indexes for evaluation of soils were chosen. Those indexes are focusing mainly on rate of enrichment of the soils by selected heavy metals and resulting ecological and possibly health risk for human organism. Within every location, 26 samples were extracted, while every sample extract location, were selected to map the level of pollution around metallurgical plants in the most complex way. The analysis of the samples was done by techniques F-AAS and AMA 254 and established metals were mercury, lead, copper, chrome, nickel, manganese and zinc.
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Determination of heavy metals in soils and sediments in the region Revúce
Kováč, Lukáš ; Vávrová, Milada (referee) ; Doležalová Weissmannová, Helena (advisor)
This thesis aims to assess the extent of contamination of soil and sediment with risk metals in Jelšava. The main polluter of the environment in this area is the magnetize factory. Sampling of soils and sediments were made in three seasons. Sampling times were staggered to represent different seasons and to take into account the impact of the seasons on the obtained values of the concentrations in soil and sediment. Sampling sites were selected according according to the different distances from the factory and according to the different loading of roads. In each of the collected samples were determined concentrations of the elements copper, lead, zinc, nickel, manganese, mercury, cadmium and vanadium. Copper, lead, zinc, nickel and manganese were analyzed by atomic absorption spectrometry with atomization in a flame (F AAS), cadmium and vanadium were determined by atomic absorption spectrometry with electrothermal atomization (ET AAS). For the determination of mercury was used mercury analyzer (AMA).
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Possibilities of the hydrometallurgical process for the recovery of light metals
Skalík, Martin ; Ptáček, Petr (referee) ; Opravil, Tomáš (advisor)
This bachelor thesis focuses on the assembly of individual stages of the hydrometallurgical process for recovery of lithium, magnesium and aluminum from mica. The main focus was the primary process of hydrometallurgy, i.e. leaching of mica in order to obtain an leachate enriched with lithium, magnesium and aluminum ions. The concentration of metal ions in the leachate was assessed by F-AAS analysis to determine efficiency of the temperature while leaching, leaching time, leaching agent concentration and calcitantion of the input mica.
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Analysis of composition of residues of inorganic pharmaceuticals from the 18th century
Janoušková, Eva ; Nesměrák, Karel (advisor) ; Kozlík, Petr (referee)
In this bachelor thesis, sixteen samples of inorganic pharmaceuticals from the 18th century were analyzed by inductively coupled plasma mass spectrometry, atomic absorption spectrometry, atomic emission spectrometry, UV/VIS spectrometry, capillary zone electrophoresis, titrations, and gravimetric analysis. The analysis confirmed that the composition of fourteen of the analyzed samples corresponded with their respective Latin inscriptions on the apothecary jars, while two of the samples proved to be a completely different substance. All samples, except for one, contained a relatively high number of impurities. These impurities helped determine if the source of the sample was a mineral commonly occurring in nature or a chemical reaction. Keywords: History of pharmacy, ICP-MS, F-AAS, F-AES, UV/VIS spectrometry, historical pharmaceuticals
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Possibilities of the hydrometallurgical process for the recovery of light metals
Skalík, Martin ; Ptáček, Petr (referee) ; Opravil, Tomáš (advisor)
This bachelor thesis focuses on the assembly of individual stages of the hydrometallurgical process for recovery of lithium, magnesium and aluminum from mica. The main focus was the primary process of hydrometallurgy, i.e. leaching of mica in order to obtain an leachate enriched with lithium, magnesium and aluminum ions. The concentration of metal ions in the leachate was assessed by F-AAS analysis to determine efficiency of the temperature while leaching, leaching time, leaching agent concentration and calcitantion of the input mica.
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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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