No (5513)
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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 ...
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 ...
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.
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 ...
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 ...
Materiálové a energetické využití suchého stabilizovaného čistírenského kalu.
Pohořelý, Michael
2019 - Czech
Příspěvek popisuje nutnost úpravy kalové koncovky či/a způsobu nakládání s čistírenskými kaly (ČK) v České republice. Hlavním důvodem pro úpravu je změna stávající legislativy ČR a EU. The paper describes the need for change in the way of sewage sludge disposal in the Czech Republic. The main reason for the change is the amendment to the current Czech and European legislation.
Keywords:
fluid combustion; ash; fertilizer
Available in a digital repository NRGL
Materiálové a energetické využití suchého stabilizovaného čistírenského kalu.
Příspěvek popisuje nutnost úpravy kalové koncovky či/a způsobu nakládání s čistírenskými kaly (ČK) v České republice. Hlavním důvodem pro úpravu je změna stávající legislativy ČR a EU....
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 ...
Five Years of Aerosol Particles Growth Rate Measurements at Four Background Stations in the Czech Republic.
Holubová Šmejkalová, Adéla
2019 - English
In this work we used data on aerosol particle number size distribution to investigate if there are any differences or similarities in the growth rate at four background stations located in different types of environment (urban, industrial, agricultural and suburban).
Keywords:
atmospheric aerosols; model simulations; background stations
Available in a digital repository NRGL
Five Years of Aerosol Particles Growth Rate Measurements at Four Background Stations in the Czech Republic.
In this work we used data on aerosol particle number size distribution to investigate if there are any differences or similarities in the growth rate at four background stations located in different ...
Synthetic Pathways Leading to Phosphahelicenes.
Beránek, Tomáš
2019 - English
The goal of this work is to explore possible synthetic ways leading to these new members of the helicene family.\n
Keywords:
sythetic way; phosphorus; helicenes
Available in a digital repository NRGL
Synthetic Pathways Leading to Phosphahelicenes.
The goal of this work is to explore possible synthetic ways leading to these new members of the helicene family.\n
Voltametrické stanovení pálivosti chilli paprik na elektrodě ze skelného uhlíku modifikované fosfolipidy
Skopalová, J.; Rajcová, A.; Vokounová, D.; Navrátil, Tomáš
2019 - Czech
Kapsaicin je přírodní alkaloid vyskytující se v plodech chilli paprik, které patří k nejdůležitějším a nejrozšířenějším kořením. Za jejich popularitou stojí významné organoleptické vlastnosti (typická pálivá chuť), antioxidační či antimikrobiální účinky. Pálivost chilli paprik je hlavním důvodem jejich konzumace a z pohledu konzumenta představuje jednu z jejich nejdůležitějších charakteristik. Od toho se proto odvozuje potřeba tuto charakteristiku kvantifikovat. Míra pálivosti přímo souvisí s obsahem kapsaicinu a jemu podobných látek (kapsaicinoidů) v paprikách. Kromě potravinářství nachází kapsaicin své užití i v lesnictví (zemědělství) jako ochrana před okusem stromů zvěří. The aim of this study was to develop a simple method for evaluation of the pungency in chili peppers with a glassy carbon electrode modified using phospholipid membrane prepared from asolectin. For these purposes cyclic voltammetry (CV) and differential pulse voltammetry (DPV) have been used. A few different methods have been tested: direct method, transfer method on unmodified and modified electrode, using standard addition method as well as calibration curve method. A statistically significant correlations with the results of the reference HPLC method have been found in case of voltammetric methods, especially in DPV with asolectin modified electrode.
Keywords:
capsaicin; voltammetry; glassy carbon electrode
Available on request at various institutes of the ASCR
Voltametrické stanovení pálivosti chilli paprik na elektrodě ze skelného uhlíku modifikované fosfolipidy
Kapsaicin je přírodní alkaloid vyskytující se v plodech chilli paprik, které patří k nejdůležitějším a nejrozšířenějším kořením. Za jejich popularitou stojí významné organoleptické vlastnosti (typická ...
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