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Determination of heavy metals in gread tits blood and feathers
Labancová, Katarína ; Hraníček, Jakub (advisor) ; Nováková, Eliška (referee)
CZ Tato bakalářská práce se zabývá analýzou vybraných těžkých kovů (olovo, kadmium, měď, chrom, arsen) ve vzorcích krve a peří sýkor koňader (Parus major) metodou atomové absorpční spektrometrie s elektrotermickou atomizací a technikou generování těkavých sloučenin s detekcí křemenného atomizátoru. Za optimálních podmínek byla sestavena kalibrační závislost a zjistěné základní charakteristiky pro jednotlivé prvky. Klíčová slova Atomová absorpční spektrometrie, elektrotermická atomizace, chemické generovaní, těžké kovy, krev, peří, sýkora
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Electrochemical generation of tellurium volatile compounds with atomic absorption spectrometry
Labancová, Katarína ; Hraníček, Jakub (advisor) ; Jelínek, Ivan (referee)
EN The present diploma thesis deals with the electrochemical generation of volatile tellurium compounds in connection with atomic absorption spectrometry with the main goal to increase the response of the tellurium signals and thus expand the existing knowledge about this element. Tellurium is one of the heavier elements that forms less stable volatile compounds. The reason for choosing these elements was the fact that its concentration increases mainly in landfills where it is released into the environment, which can have an ecological impact and an impact on human health. In the first step, two types of electrochemical cells were constructed - a thin-film flow electrochemical cell with and without an ion exchange membrane and an apparatus with a flow injection arrangement. The choice of cell types, cathode and anode material and apparatus design was chosen based on a literature research. Attention was paid to the optimization of reaction conditions for electrochemical generation of volatile tellurium compounds, which significantly affect the efficiency of generation using a heated quartz tube atomizer. The optimized parameters were electrolyte concentration, carrier gas volume flow rate, electrolyte volume flow rate and generation current. In the second step, the effect of the temperature of the...
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Electrochemical generation of tellurium volatile compounds with atomic absorption spectrometry
Labancová, Katarína ; Hraníček, Jakub (advisor) ; Jelínek, Ivan (referee)
EN The present diploma thesis deals with the electrochemical generation of volatile tellurium compounds in connection with atomic absorption spectrometry with the main goal to increase the response of the tellurium signals and thus expand the existing knowledge about this element. Tellurium is one of the heavier elements that forms less stable volatile compounds. The reason for choosing these elements was the fact that its concentration increases mainly in landfills where it is released into the environment, which can have an ecological impact and an impact on human health. In the first step, two types of electrochemical cells were constructed - a thin-film flow electrochemical cell with and without an ion exchange membrane and an apparatus with a flow injection arrangement. The choice of cell types, cathode and anode material and apparatus design was chosen based on a literature research. Attention was paid to the optimization of reaction conditions for electrochemical generation of volatile tellurium compounds, which significantly affect the efficiency of generation using a heated quartz tube atomizer. The optimized parameters were electrolyte concentration, carrier gas volume flow rate, electrolyte volume flow rate and generation current. In the second step, the effect of the temperature of the...
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Determination of heavy metals in gread tits blood and feathers
Labancová, Katarína ; Hraníček, Jakub (advisor) ; Nováková, Eliška (referee)
CZ Tato bakalářská práce se zabývá analýzou vybraných těžkých kovů (olovo, kadmium, měď, chrom, arsen) ve vzorcích krve a peří sýkor koňader (Parus major) metodou atomové absorpční spektrometrie s elektrotermickou atomizací a technikou generování těkavých sloučenin s detekcí křemenného atomizátoru. Za optimálních podmínek byla sestavena kalibrační závislost a zjistěné základní charakteristiky pro jednotlivé prvky. Klíčová slova Atomová absorpční spektrometrie, elektrotermická atomizace, chemické generovaní, těžké kovy, krev, peří, sýkora
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