Interaction of triazole fungicides in agriculture
Kovač, Ishak; Jakl, M.; Šolínová, Veronika; Kašička, Václav; Jaklová Dytrtová, Jana
2022 - anglický Klíčová slova: capillary electrokinetic chromatography; triazole fungicides; quantitative analysis Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR. Interaction of triazole fungicides in agriculture

Kovač, Ishak; Jakl, M.; Šolínová, Veronika; Kašička, Václav; Jaklová Dytrtová, Jana
Ústav organické chemie a biochemie, 2022

Analysis, separation and characterization of dityrosine diastereomers by capillary electrophoresis
Šolínová, Veronika; Niederhafner, Petr; Šafařík, Martin; Šebestík, Jaroslav; Kašička, Václav
2022 - anglický Klíčová slova: capillary electrophoresis; diastereomer separation; dityrosine Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR. Analysis, separation and characterization of dityrosine diastereomers by capillary electrophoresis

Šolínová, Veronika; Niederhafner, Petr; Šafařík, Martin; Šebestík, Jaroslav; Kašička, Václav
Ústav organické chemie a biochemie, 2022

Trapping of volatile cadmium species on gold surfaces for atomic absorption spectrometry
Sagapova, Linda; Svoboda, Milan; Matoušek, Tomáš; Kratzer, Jan
2022 - anglický Simple preconcentration step was developed for cadmium determination after chemical vapor generation prior to atomic absorption spectrometric detection. Chemical vapor generation of cadmium was performed in the presence of Cr3+/KCN as modifiers. Klíčová slova: chemical vapor generation; cadmium; atomic spectrometry Plné texty jsou dostupné v digitálním repozitáři Akademie Věd. Trapping of volatile cadmium species on gold surfaces for atomic absorption spectrometry

Simple preconcentration step was developed for cadmium determination after chemical vapor generation prior to atomic absorption spectrometric detection. Chemical vapor generation of cadmium was ...

Sagapova, Linda; Svoboda, Milan; Matoušek, Tomáš; Kratzer, Jan
Ústav analytické chemie, 2022

Removal of PFASs from sewage sludge by pyrolysis
Hušek, Matěj
2022 - anglický Our work aimed to describe PFASs behaviour at different pyrolysis temperatures (200 to 700 °C). We analysed 37 PFAS in sewage sludge samples and pyrolysis products. The temperature at which PFASs were removed from the sewage sludge at more than 99.0% was 400 °C, and at 600 °C, removal was more than 99.9%. As a result, it is recommended for commercial sludge pyrolysis units (larger volume, lower material homogeneity) that the process temperature be not lower than 600 °C. This recommendation is supported and demonstrated by the analyses of samples from the Bohuslavice Trutnov WWTP (CZE), where the sludge pyrolysis unit is in operation.\n Klíčová slova: sewage sludge samples; pyrolysis; temperature Plné texty jsou dostupné v digitálním repozitáři NUŠL Removal of PFASs from sewage sludge by pyrolysis

Our work aimed to describe PFASs behaviour at different pyrolysis temperatures (200 to 700 °C). We analysed 37 PFAS in sewage sludge samples and pyrolysis products. The temperature at which PFASs were ...

Hušek, Matěj
Ústav chemických procesů, 2022

Application of hydrodynamic cavitation in brewing
Štěrba, Jiří
2022 - anglický The aim of this work is to apply these advantages in the brewery industry. In the field of beer brewing, we would like to investigate several phenomena, such as the isomerization of bitter hop acids, the reduction of gluten concentration or the cell-walls breakdown.\n Klíčová slova: hydrodynamic cavitation; brewery industry; Venturi jet system Plné texty jsou dostupné v digitálním repozitáři NUŠL Application of hydrodynamic cavitation in brewing

The aim of this work is to apply these advantages in the brewery industry. In the field of beer brewing, we would like to investigate several phenomena, such as the isomerization of bitter hop acids, ...

Štěrba, Jiří
Ústav chemických procesů, 2022

Vertical distribution of black carbon (BC)
Julaha, Kajal
2022 - anglický Black Carbon (BC) is one of the leading contributors affecting our climate system. Absorbing at all visible wavelengths results in a warmer environment and thus has been considered the second most important contributor to global warming after carbon dioxide. The primary sources of BC aerosol are the incomplete combustion of fossil fuels and biomass burning. However, the composition of atmospheric aerosols varies with the height above the Earth’s surface. Recent studies have shown significant uncertainties (about 25%) in model simulations of the vertical BC distribution, both on the regional and global levels. BC’s vertical transport is suggested to be one area where the models still differ significantly,4,5 highlighting further investigation. Klíčová slova: black carbon; fossil fuels and biomass; atmospheric aerosol Plné texty jsou dostupné v digitálním repozitáři NUŠL Vertical distribution of black carbon (BC)

Black Carbon (BC) is one of the leading contributors affecting our climate system. Absorbing at all visible wavelengths results in a warmer environment and thus has been considered the second most ...

Julaha, Kajal
Ústav chemických procesů, 2022

Continuous electrocoagulation of Chlorella vulgaris in a novel channel-flow reactor
Lucáková, Simona
2022 - anglický In our laboratory, we employed an electrocoagulation process with iron sacrificial anode leading to the separation of Chlorella vulgaris cells with high efficiency and at the same time acceptable low contamination of separated biomass by iron. Comparing to only centrifugation, the total energy costs of harvesting using electrocoagulation as a pre-concentration step prior to centrifugation were reduced by more than 80%. After extensive study of the influence of relevant process parameters. Klíčová slova: chlorella vulgaris; electrocoagulation; biomass; iron Plné texty jsou dostupné v digitálním repozitáři NUŠL Continuous electrocoagulation of Chlorella vulgaris in a novel channel-flow reactor

In our laboratory, we employed an electrocoagulation process with iron sacrificial anode leading to the separation of Chlorella vulgaris cells with high efficiency and at the same time acceptable low ...

Lucáková, Simona
Ústav chemických procesů, 2022

Tetracycline degradation using catalysts of platinum coated over CeO2 and CeO2ZrO2
Bourassi, Mahdi
2022 - anglický These works showed that, by adding well defined nanoparticles into ionic liquids, it is possible to tune or/and enhance their thermophysical properties and make them more suitable for electrical and thermal energy storage, and heat transfer applications. Klíčová slova: catalytic experiments; tetracycline; water depollution Plné texty jsou dostupné v digitálním repozitáři NUŠL Tetracycline degradation using catalysts of platinum coated over CeO2 and CeO2ZrO2

These works showed that, by adding well defined nanoparticles into ionic liquids, it is possible to tune or/and enhance their thermophysical properties and make them more suitable for electrical and ...

Bourassi, Mahdi
Ústav chemických procesů, 2022

Ambient organic aerosol origin at rural background site in the Czech Republic
Lhotka, Radek
2022 - anglický Source apportionment of organic aerosols (OA) at background sites is one of the important tasks of the current air quality protection. OA are emitted directly from primary sources or formed in the atmosphere via the oxidation of gas-phase precursors with subsequent partitioning resulting in low-volatility products into the particle phase. Klíčová slova: organic aerosol; air quality protection; ural background site Plné texty jsou dostupné v digitálním repozitáři NUŠL Ambient organic aerosol origin at rural background site in the Czech Republic

Source apportionment of organic aerosols (OA) at background sites is one of the important tasks of the current air quality protection. OA are emitted directly from primary sources or formed in the ...

Lhotka, Radek
Ústav chemických procesů, 2022

Physicochemical Properties and Origin of PM1 Measured at a Rural Background Site
Pokorná, Petra; Zíková, Naděžda; Vodička, Petr; Lhotka, Radek; Mbengue, Saliou; Holubová Šmejkalová, A.; Riffault, V.; Ondráček, Jakub; Schwarz, Jaroslav; Ždímal, Vladimír
2022 - anglický This study assesses the variability of organic aerosol (OA) sources monitored at the rural background site Frýdlant. Non-refractory PM1 was evaluated in two seasons of\n2021. The positive matrix factorization with the multi-linear engine was used to determine the sources of OA at Frýdlant site, with four factors resolved both in winter and\nsummer. Klíčová slova: organic aerosols; positive matrix factorization with multi-linear engine; non-refractive aerosol Plné texty jsou dostupné v digitálním repozitáři NUŠL Physicochemical Properties and Origin of PM1 Measured at a Rural Background Site

This study assesses the variability of organic aerosol (OA) sources monitored at the rural background site Frýdlant. Non-refractory PM1 was evaluated in two seasons of\n2021. The positive matrix ...

Pokorná, Petra; Zíková, Naděžda; Vodička, Petr; Lhotka, Radek; Mbengue, Saliou; Holubová Šmejkalová, A.; Riffault, V.; Ondráček, Jakub; Schwarz, Jaroslav; Ždímal, Vladimír
Ústav chemických procesů, 2022