Number of found documents: 6576
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Photochemical vapor generation of cobalt for detection by inductively coupled plasma mass spectrometry
Vyhnanovský, Jaromír; Musil, Stanislav
2020 - English
Volatile species of cobalt were generated in a flow-injection system, employing a high-efficiency flow-through UV photoreactor and a formic acid based medium. Optimal generation conditions were found as 10% (v/v) formic acid and 4 mol/L ammonium formate at a flow rate of 4 ml/min. Keywords: photochemical vapor generation; cobalt; inductively coupled plasma mass spectrometry Available in digital repository of the ASCR
Photochemical vapor generation of cobalt for detection by inductively coupled plasma mass spectrometry

Volatile species of cobalt were generated in a flow-injection system, employing a high-efficiency flow-through UV photoreactor and a formic acid based medium. Optimal generation conditions were found ...

Vyhnanovský, Jaromír; Musil, Stanislav
Ústav analytické chemie, 2020

Photon-upconversion scanner for multiplexed imaging
Hlaváček, Antonín; Křivánková, Jana; Foret, František
2020 - English
In analytical chemistry, multiplexed assays facilitate parallel detection of analytes. The multiplexing reduces the consumption of sample, reagents, and other resources and can be applied for medical diagnostics, the studies of biomolecule interactions, single-cell and singlemolecule assays, environmental monitoring, pathogen detection, multiparameter chemical and biological assays and screening of chemical libraries. Keywords: photon-upconversion scanner; photon-upconversion nanoparticles; droplet microfluidics Fulltext is available at external website.
Photon-upconversion scanner for multiplexed imaging

In analytical chemistry, multiplexed assays facilitate parallel detection of analytes. The multiplexing reduces the consumption of sample, reagents, and other resources and can be applied for medical ...

Hlaváček, Antonín; Křivánková, Jana; Foret, František
Ústav analytické chemie, 2020

Photochemical vapour generation coupled with atomic fluorescence spectrometry
Štádlerová, Barbora; Vyhnanovský, Jaromír; Dědina, Jiří; Musil, Stanislav
2020 - English
Atomization of bismuthane in the flame-in-gas-shield atomizer by photochemical vapour generation coupled with atomic fluorescence spectrometry. Keywords: atomic fluorescence spectrometry; bismuth; photochemical vapour generation Available in digital repository of the ASCR
Photochemical vapour generation coupled with atomic fluorescence spectrometry

Atomization of bismuthane in the flame-in-gas-shield atomizer by photochemical vapour generation coupled with atomic fluorescence spectrometry.

Štádlerová, Barbora; Vyhnanovský, Jaromír; Dědina, Jiří; Musil, Stanislav
Ústav analytické chemie, 2020

Chemical vapor generation of cadmium for analytical atomic spectrometry
Sagapova, Linda; Kodríková, Barbora; Svoboda, Milan; Musil, Stanislav; Kratzer, Jan
2020 - English
Chemical vapor generation of cadmium volatile compounds was optimized, several reaction modifiers based on inorganic salts and complexes of CrIII+, CoII+, TiIII+, TiIV+ were tested. Their use resulted in 4-5 times enhancement in sensitivity, reflected also in corresponding increase of generation efficiency and better repeatability. Generation efficiency was determined from a comparison between sensitivities obtained with chemical vapor generation and conventional solution nebulization, both simultaneously coupled with inductively coupled plasma mass spectrometry. The identity of the generated cadmium compounds was identified. Keywords: cadmium; chemical vapor generation; atomic absorption spectrometry Available in digital repository of the ASCR
Chemical vapor generation of cadmium for analytical atomic spectrometry

Chemical vapor generation of cadmium volatile compounds was optimized, several reaction modifiers based on inorganic salts and complexes of CrIII+, CoII+, TiIII+, TiIV+ were tested. Their use resulted ...

Sagapova, Linda; Kodríková, Barbora; Svoboda, Milan; Musil, Stanislav; Kratzer, Jan
Ústav analytické chemie, 2020

Generování hydridů ve spojení s hmotnostní spektrometrií s indukčně vázaným plazmatem
Matoušek, Tomáš
2019 - Czech
Přehledný text popisující využití techniky generování těkavých hydridů v hmotnostní spektrometrií s indukčně vázaným plazmatem včetně speciačních analýz. An overview describing technique of volatile hydride generation in connection with inductively coupled plasma mass spectrometry including speciation analysis. Keywords: hydride generation; ICP-MS; speciation analysis Available at various institutes of the ASCR
Generování hydridů ve spojení s hmotnostní spektrometrií s indukčně vázaným plazmatem

Přehledný text popisující využití techniky generování těkavých hydridů v hmotnostní spektrometrií s indukčně vázaným plazmatem včetně speciačních analýz....

Matoušek, Tomáš
Ústav analytické chemie, 2019

NMR Metabolomics Study of the Association between Pancreatic Cancer and Diabetes Mellrtus.
Michálková, Lenka; Horník, Štěpán; Sýkora, Jan; Habartová, L.; Setnička, V.
2019 - English
In our study, 1H NMR metabolomics was employed to plasma samples of pancreatic cancer patients, individuals with long-term diabetes mellitus type 2 (lasting more than 5 years) and healthy controls. The NMR analyses were followed by establishing a statistical model based on principal component analysis and discriminant analysis. The aim was to discover differences between these groups and to define a potential biomarker panel. The statistical evaluation of metabolomics-based profiles provided high values of sensitivity and specificity. Subsequently, plasma samples of the risk group, specifically patients with recently diagnosed diabetes mellitus with a duration of <3 years (possible T3cDM), were analysed and the possibility of PC development was predicted. The achieved results showed strong potential of 1H NMR metabolomics to establish a biomarker panel that would facilitate the early diagnosis of PC and the possibility identify diabetic individuals, who are at risk of developing PC. Keywords: pancreatic cancer; nmr analyses; biomarker panel Available in a digital repository NRGL
NMR Metabolomics Study of the Association between Pancreatic Cancer and Diabetes Mellrtus.

In our study, 1H NMR metabolomics was employed to plasma samples of pancreatic cancer patients, individuals with long-term diabetes mellitus type 2 (lasting more than 5 years) and healthy controls. ...

Michálková, Lenka; Horník, Štěpán; Sýkora, Jan; Habartová, L.; Setnička, V.
Ústav chemických procesů, 2019

Dialytic Separation of Anions from DMSO Solution Facilitated by dendritic Receptors.
Cuřínová, Petra; Winkler, Maximilian; Krupková, Alena; Budka, J.; Wun, Ch.N.; Blechta, Vratislav; Červenková Šťastná, Lucie; Sýkora, Jan; Strašák, Tomáš
2019 - English
As the dialytic tubing is impermeable for big molecules of receptor, the anions crossing the barrier of dialytic tubing to form complex with the receptor stay entrapped inside and can be removed from the solution. NMR methods were used to study the complexation properties of given receptors as well as to determine the concentration changes during dialytic experiments. Keywords: anions; receptor; dialytic experiments Available in a digital repository NRGL
Dialytic Separation of Anions from DMSO Solution Facilitated by dendritic Receptors.

As the dialytic tubing is impermeable for big molecules of receptor, the anions crossing the barrier of dialytic tubing to form complex with the receptor stay entrapped inside and can be removed from ...

Cuřínová, Petra; Winkler, Maximilian; Krupková, Alena; Budka, J.; Wun, Ch.N.; Blechta, Vratislav; Červenková Šťastná, Lucie; Sýkora, Jan; Strašák, Tomáš
Ústav chemických procesů, 2019

Stanovení rychlých změn koncentrací těkavých organických sloučenin pomocí difúzního denuderu
Křůmal, Kamil; Mikuška, Pavel
2019 - Czech
Stanovení rychlých změn koncentrací těkavých organických sloučenin bylo provedeno využitím difúzního denuderu se stékajícím filmem kapaliny, který umožňuje odběr vzorků v časových intervalech již od 2 minut. Determination of fast changes in concentrations of volatile organic compounds was performed using wet effluent diffusion denuder, which allows collection of samples in 2-min intervals. Keywords: monoterpenes; BTEX; denuder Available in digital repository of the ASCR
Stanovení rychlých změn koncentrací těkavých organických sloučenin pomocí difúzního denuderu

Stanovení rychlých změn koncentrací těkavých organických sloučenin bylo provedeno využitím difúzního denuderu se stékajícím filmem kapaliny, který umožňuje odběr vzorků v časových intervalech již od 2 ...

Křůmal, Kamil; Mikuška, Pavel
Ústav analytické chemie, 2019

Influence of Surface Treatment of Thin-Film Composite Membrane on Separation of Carbon Dioxide from Biogas.
Morávková, Lenka; Kárászová, Magda; Petrusová, Zuzana; Izák, Pavel
2019 - English
The effect of the various wetting procedure on the membrane performance was studied [1]. Spraying is clearly more efficient than spreading water on the top of the membrane with a brush and results in higher methane purity. Spraying ensures a more uniform distribution of the water on the skin layer of the membrane, leading to much higher CO2 permeation through the membrane and higher CH4 content in the retentate stream. Keywords: biogas; separation; carbon dioxide Available in a digital repository NRGL
Influence of Surface Treatment of Thin-Film Composite Membrane on Separation of Carbon Dioxide from Biogas.

The effect of the various wetting procedure on the membrane performance was studied [1]. Spraying is clearly more efficient than spreading water on the top of the membrane with a brush and results in ...

Morávková, Lenka; Kárászová, Magda; Petrusová, Zuzana; Izák, Pavel
Ústav chemických procesů, 2019

Magnesium Silicide and Germanide from Electronic Waste as a Source of CVD Precursors for Potential Catalysts Preparation.
Bumba, Jakub
2019 - English
This work is focused on the regeneration of silicon and germanium from electronic waste and on the possibility of intermediate products utilization e.g. for chemical vapour deposition (CVD) and catalysis. Keywords: electronic waste; silicon and germanium; catalysts preparation Available in a digital repository NRGL
Magnesium Silicide and Germanide from Electronic Waste as a Source of CVD Precursors for Potential Catalysts Preparation.

This work is focused on the regeneration of silicon and germanium from electronic waste and on the possibility of intermediate products utilization e.g. for chemical vapour deposition (CVD) and ...

Bumba, Jakub
Ústav chemických procesů, 2019

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