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Study of sorption properties of biochar
Kocinger, Oskar ; Řezáčová, Veronika (oponent) ; Mravcová, Ludmila (vedoucí práce)
This diploma thesis deals with sorption properties of biochar produced from wood biomass treated with concentrated hydrochloric acid and activated carbon with respect to the triazine pesticide propazine. Although pesticides are widely used in both agriculture and the private sector worldwide, they pose a significant risk to ecosystems and human health. Propazine belongs to the group of chlorinated triazine herbicides, which pose a risk mainly as endocrine disruptors. The sorption of organic pollutants using pyrogenic carbonaceous materials promises an efficient and economically affordable solution, which has recently received increasing attention from the scientific community. In this work, we used isotherms to describe the equilibria of propazine sorption to given sorbents during vial experiments. Analysis of the propazine content in the model water solutions after reaching equilibrium was performed using high-performance liquid chromatography with mass detection.
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Study of sorption properties of biochar
Kocinger, Oskar ; Řezáčová, Veronika (oponent) ; Mravcová, Ludmila (vedoucí práce)
This diploma thesis deals with sorption properties of biochar produced from wood biomass treated with concentrated hydrochloric acid and activated carbon with respect to the triazine pesticide propazine. Although pesticides are widely used in both agriculture and the private sector worldwide, they pose a significant risk to ecosystems and human health. Propazine belongs to the group of chlorinated triazine herbicides, which pose a risk mainly as endocrine disruptors. The sorption of organic pollutants using pyrogenic carbonaceous materials promises an efficient and economically affordable solution, which has recently received increasing attention from the scientific community. In this work, we used isotherms to describe the equilibria of propazine sorption to given sorbents during vial experiments. Analysis of the propazine content in the model water solutions after reaching equilibrium was performed using high-performance liquid chromatography with mass detection.
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Zavedení metody na stanovení vybraných triazinových pesticidů ve vodě metodou GC-MS/MS
OPEKAR, Jan
Tato bakalářská práce se týká stanovení triazinových pesticidů ve vodě pomocí metody GC-MS/MS. Nejprve byla provedena optimalizace analytické metody. Následující parametry byly vybrány k optimalizaci: průtok nosného plynu, teplotní gradient, výběr SRM přechodů a kolizní energie SRM přechodů. Poté byly optimalizovány některé extrakční parametry, konkrétně doba sušení SPE kolonek, výběr elučního rozpouštědla, pH vzorku a objem vzorku. Nakonec byla metoda úspěšně zvalidována a byla použita na reálný vzorek.
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