Yes (139)
No (113)
Number of found documents:
252
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to
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 ...
Effect of metal sensitizers on photochemical vapor generation of bismuth for analytical atomic spectrometry
Vyhnanovský, Jaromír; Yildiz, D.; Musil, Stanislav
2019 - English
Three new sensitizers with a significant positive effect on the photochemical vapor generation of bismuth were described. Cobalt was found to be the most effective and led to a significant enhancement of the signal.
Keywords:
photochemical volatile species generation; bismuth; AAS
Available at various institutes of the ASCR
Effect of metal sensitizers on photochemical vapor generation of bismuth for analytical atomic spectrometry
Three new sensitizers with a significant positive effect on the photochemical vapor generation of bismuth were described. Cobalt was found to be the most effective and led to a significant enhancement ...
Metals in atmospheric particulate matter
Barboříková, H.; Mikuška, Pavel; Hegrová, J.; Pokorná, Petra; Krajčovič, J.
2019 - English
Atmospheric pollution is one of the most serious global enviroment problem. Metals constitute important class of pollutants which have received athe attention of researchers all over the world. Metals have strong potential to be adsorbed on particulate matter and than enter the human body through inhalation causing several health issue (asthma, lung cancer).
Keywords:
aerosol; metals
Available at various institutes of the ASCR
Metals in atmospheric particulate matter
Atmospheric pollution is one of the most serious global enviroment problem. Metals constitute important class of pollutants which have received athe attention of researchers all over the world. Metals ...
LIBS assessment of spatial photon-upconversion nanoparticle distribution in model plants (R. sativus and L. minor)
Modlitbová, P.; Novotný, K.; Hlaváček, Antonín; Pořízka, P.; Kaiser, J.
2019 - English
In the present study, radish (Raphanus sativus L.) and common duckweed (Lemna minor L.) were treated with an aqueous dispersion of carboxylated silica-coated photon-upconversion nanoparticles containing rare-earth elements (Y, Yb, and Er). The total content of rare earths and their bioaccumulation factors were determined in the root, hypocotyl, and leaves of R. sativus after 72 hours, and in L. minor fronds after 168 hours. In R. sativus, translocation factors were determined as the ratio of rare earths content in hypocotyl versus roots and in leaves versus hypocotyl. The lengths of the root and hypocotyl in R. sativus, as well as the frond area in L. minor were monitored as toxicity end points. To distinguish rare-earth bioaccumulation patterns, two-dimensional maps of elemental distribution in the whole R. sativus plant and in L. minor fronds were obtained by using laser-induced breakdown spectroscopy with a lateral resolution of 100 μm. Obtained results revealed that the tested nanoparticles became adsorbed on L. minor fronds and R. sativus roots, and got transferred from roots through the hypocotyl into leaves in R. sativus. Our results show that bioaccumulation patterns and spatial distribution of rare earths in nanoparticle-treated plants differ from those of positive control (the mixture of YCl3, YbCl3, and ErCl3).
Keywords:
photonupconversion nanoparticles; luminescent nanomaterials; bioaccumulation
Available in digital repository of the ASCR
LIBS assessment of spatial photon-upconversion nanoparticle distribution in model plants (R. sativus and L. minor)
In the present study, radish (Raphanus sativus L.) and common duckweed (Lemna minor L.) were treated with an aqueous dispersion of carboxylated silica-coated photon-upconversion nanoparticles ...
On-line simultaneous determination of ammonia/ammonium in ambient air
Čapka, Lukáš; Mikuška, Pavel
2019 - English
Presented paper describes methods for on-line determination of gaseous ammonia and particulate ammonium in ambient air.
Keywords:
ammonia; ammonium; CGU-ACTJU sampler
Available in digital repository of the ASCR
On-line simultaneous determination of ammonia/ammonium in ambient air
Presented paper describes methods for on-line determination of gaseous ammonia and particulate ammonium in ambient air.
Atomization of bismuthane in two flame atomizers for atomic fluorescence spectrometry
Štádlerová, Barbora; Kolrosová, Marta; Dědina, Jiří; Musil, Stanislav
2019 - English
Atomization of bismuthane in the minature diffusion flame and the flame-in-gas-shield atomizer by hydride generation coupled with atomic fluorescence spectrometry.
Keywords:
atomic fluorescence spectrometry; bismuth; hydride generation
Available at various institutes of the ASCR
Atomization of bismuthane in two flame atomizers for atomic fluorescence spectrometry
Atomization of bismuthane in the minature diffusion flame and the flame-in-gas-shield atomizer by hydride generation coupled with atomic fluorescence spectrometry.
Optimization of photochemical vapor generation of nickel with ICP-MS detection
Šoukal, Jakub; Musil, Stanislav
2019 - English
Photochemical vapor generation of Ni has been investigated in detail using ICP-MS as the detector.
Keywords:
photochemical vapor generation; nickel; ICP-MS
Available in digital repository of the ASCR
Optimization of photochemical vapor generation of nickel with ICP-MS detection
Photochemical vapor generation of Ni has been investigated in detail using ICP-MS as the detector.
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