Number of found documents: 268
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Optimization of photochemical vapor generation of molybdenum as a sample introduction for ICP-MS
Šoukal, Jakub; Musil, Stanislav
2018 - English
Conditions of photochemical vapor generation of molybdenum with ICP-MS detection have been in detail investigated. Keywords: ICP-MS; molybdenum; photochemical vapor generation Available at various institutes of the ASCR
Optimization of photochemical vapor generation of molybdenum as a sample introduction for ICP-MS

Conditions of photochemical vapor generation of molybdenum with ICP-MS detection have been in detail investigated.

Šoukal, Jakub; Musil, Stanislav
Ústav analytické chemie, 2018

Složení prachových částic v emisích ze spalování uhlí v různých typech kotlů používaných pro vytápění domácností
Křůmal, Kamil; Mikuška, Pavel; Horák, J.; Hopan, F.
2018 - Czech
Organické sloučeniny (polycyklické aromatické uhlovodíky, alkany) a organické markery (hopany) používané pro identifikaci emisních zdrojů aerosolů byly měřeny v emisích ze spalování černého a hnědého uhlí. Uhlí bylo spalováno v různých typech kotlů (prohořívací, odhořívací, automatický kotel) používaných pro vytápění domácností v České republice. Organic compounds (polycyclic aromatic hydrocarbons, alkanes) and organic markers (hopanes) used for the identification of aerosol emission sources were measured in emissions from the combustion of hard and brown coal. Coal was combusted in different boilers (overfire boiler, boiler with down-draft combustion and automatic boiler) used for residential heating in the Czech Republic. Keywords: residential heating; household heating; coal combustion Available at various institutes of the ASCR
Složení prachových částic v emisích ze spalování uhlí v různých typech kotlů používaných pro vytápění domácností

Organické sloučeniny (polycyklické aromatické uhlovodíky, alkany) a organické markery (hopany) používané pro identifikaci emisních zdrojů aerosolů byly měřeny v emisích ze spalování černého a hnědého ...

Křůmal, Kamil; Mikuška, Pavel; Horák, J.; Hopan, F.
Ústav analytické chemie, 2018

Generování těkavých specií přechodných kovů pro analytickou atomovou spektrometrii se zaměřením na účinnost generování, prekoncentraci, identitu těkavých specií a studium mechanismu generování
Musil, Stanislav
2018 - Czech
Předkládaný soubor 8 publikovaných prací a jednoho patentu se věnuje právě této problematice. Zaměřili jsme se na studium mechanismu generování a identifikaci těkavých specií v plynné fázi při generovaní Ag1, Au3 a Cu9 s detekcí AAS. Pomocí přístrojů pro charakterizaci velikosti částic aerosolu a transmisní elektronové mikroskopie jsme identifikovali nanočástice těchto kovů v plynné fázi. Keywords: volatile species; atomic absorption spectrometry; generation of volatile species Available on request at various institutes of the ASCR
Generování těkavých specií přechodných kovů pro analytickou atomovou spektrometrii se zaměřením na účinnost generování, prekoncentraci, identitu těkavých specií a studium mechanismu generování

Předkládaný soubor 8 publikovaných prací a jednoho patentu se věnuje právě této problematice. Zaměřili jsme se na studium mechanismu generování a identifikaci těkavých specií v plynné fázi při ...

Musil, Stanislav
Ústav analytické chemie, 2018

Photon-upconverting nanoparticles as a novel background-free label in immunoassays
Farka, Z.; Hlaváček, Antonín; Mickert, M. J.; Skládal, P.; Gorris, H. H.
2018 - English
Photon-upconverting nanoparticles (UCNPs) have become an attractive label in immunoassays because their anti-Stokes luminescence can be excited by the NIR laser and detected in the VIS region without optical background interference. Further advantages of UCNPs include good photostability, large anti-Stokes shifts, and multiple narrow emission bands that can be used for multiplexed detection. We have developed a competitive upconversion-linked immunosorbent assay (ULISA) for detection of the pharmaceutical diclofenac (DCF) in surface waters. Silica-coated UCNPs (50 nm in diameter) with carboxyl groups on the surface were synthesized and conjugated with the secondary anti-IgG antibody. The structure and monodispersity of the nanoconjugates was studied by TEM and agarose gel electrophoresis. Using a highly affine anti-DCF primary antibody, the optimized ULISA provided a detection limit of 50 pg·mL−1. Keywords: photon-upconversion nanoparticle; immunoassay; bioconjugation; antibody; diclofenac Available at various institutes of the ASCR
Photon-upconverting nanoparticles as a novel background-free label in immunoassays

Photon-upconverting nanoparticles (UCNPs) have become an attractive label in immunoassays because their anti-Stokes luminescence can be excited by the NIR laser and detected in the VIS region without ...

Farka, Z.; Hlaváček, Antonín; Mickert, M. J.; Skládal, P.; Gorris, H. H.
Ústav analytické chemie, 2018

Determination of permeability of ulra-fine lead oxide aerosols through military filters
Kellnerova, E.; Večeřa, Zbyněk; Kellner, J.; Zeman, T.; Hylak, Č.
2018 - English
Military filters introduced in the Army of the Czech Republic are most commonly used when working with combat equipment and weapons and in manoeuvring activities in the terrain with the use of explosives or chemical warfare agents. During such activities, a large number of pollutants in the form of nanoparticles are released. Nanoparticles, irrespective of their chemical composition, are classified as carcinogenic to humans and therefore it is necessary to eliminate them from the air. Military filters, especially the combined ones, which contain a filtration as well as sorption component, are most widely used and are designed for the widest range of pollutants. However, the current methodology to evaluate the effectiveness of military filters does not fix a duty to monitor the ability of the filters to capture relevant pollutants across the whole range of sizes. The paper evaluates the efficiency of selected types of military filters using the methodology and instrumentation introduced in the accredited laboratories of the Institute of Analytical Chemistry of the Academy of Sciences of the Czech Republic. The testing has been carried out simultaneously with two concentrations of ultra-fine aerosols containing lead oxide nanoparticles ranging in size from 7.6 nm to 299.6 nm. It is an aerosol, the physicochemical and toxicological properties of which are known. During the work the basic parameters of permeability of aerosols tested by filters have been evaluated, especially: size and number of particles in front of and behind the filter, the efficiency and penetration of nanoparticles by the filter. Keywords: nanoparticle; filter; efficiency; health safety Available at various institutes of the ASCR
Determination of permeability of ulra-fine lead oxide aerosols through military filters

Military filters introduced in the Army of the Czech Republic are most commonly used when working with combat equipment and weapons and in manoeuvring activities in the terrain with the use of ...

Kellnerova, E.; Večeřa, Zbyněk; Kellner, J.; Zeman, T.; Hylak, Č.
Ústav analytické chemie, 2018

Stanovení rtuti a methylrtuti ve specifických antarktických půdách z okolí uhynulých tuleňů
Zvěřina, O.; Kuta, J.; Coufalík, Pavel; Komárek, J.
2017 - Czech
Tato práce se zabývá stanovením celkové rtuti a methylrtuti ve specifických antarktických půdách, vyskytujících se v okolí uhynulých tuleňů. This work is dealing with the determination of total mercury and methylmercury in specific Antarctic soils, which occur in the surroundings of seal carcasses. Keywords: methylmercury; soil; Antarctica Available at various institutes of the ASCR
Stanovení rtuti a methylrtuti ve specifických antarktických půdách z okolí uhynulých tuleňů

Tato práce se zabývá stanovením celkové rtuti a methylrtuti ve specifických antarktických půdách, vyskytujících se v okolí uhynulých tuleňů....

Zvěřina, O.; Kuta, J.; Coufalík, Pavel; Komárek, J.
Ústav analytické chemie, 2017

SMV-2017-743: Preparation, testing and delivery of isoelectric point standards
Čmelík, Richard
2017 - English
The project continues long-term cooperation of both participants. The low-molecular mass pI markers were synthesized and examined with aim to fill up and deliver the previously described compounds. Keywords: Isoelectric focusing; pI markers; aminomethylphenols Available on request at various institutes of the ASCR
SMV-2017-743: Preparation, testing and delivery of isoelectric point standards

The project continues long-term cooperation of both participants. The low-molecular mass pI markers were synthesized and examined with aim to fill up and deliver the previously described compounds.

Čmelík, Richard
Ústav analytické chemie, 2017

SMV-2017-706: Ověření účinnosti spalování CH4 a záchyt CO2
Večeřa, Zbyněk
2017 - Czech
Testování a vývoj zařízení řady ”V3H14C”, která jsou určena k odběru vzorků 3H a 14C ze vzduchu. Vzorky se zachycují do sorbentů, sorbentem pro 3H (THO, T2O) je silikagel, sorbentem pro 14C (14CO2) je vodný roztok 3M hydroxidu sodného. Získané vzorky jsou určeny k následné laboratorní analýze. Analýzou zjištěné hodnoty aktivit odebraných vzorků slouží ke stanovení bilance vypouštěného 3H a 14C např. z jaderných zařízení. Testing of ”V3H14C” apparatus designed for 3H and 14C sampling from the air. The samples are captured into sorbents, silica gel for 3H (THO, T2O), and sodium hydroxide for 14C (14CO2) that are subsequently in laboratory analyzed for quantification of radioactive emissions of 3H and 14C from nuclear power plants e.g. Keywords: testing; air; radioactive emissions Available at various institutes of the ASCR
SMV-2017-706: Ověření účinnosti spalování CH4 a záchyt CO2

Testování a vývoj zařízení řady ”V3H14C”, která jsou určena k odběru vzorků 3H a 14C ze vzduchu. Vzorky se zachycují do sorbentů, sorbentem pro 3H (THO, T2O) je silikagel, sorbentem pro 14C (14CO2) je ...

Večeřa, Zbyněk
Ústav analytické chemie, 2017

SMV-2017-732: Preparation, testing and delivery of isoelectric point standards
Čmelík, Richard
2017 - English
The project continues long-term cooperation of both participants. The low-molecular mass pI markers were synthesized and examined with aim to fill up and deliver the previously described compounds. Keywords: Isoelectric focusing; pI markers; aminomethylphenols Available on request at various institutes of the ASCR
SMV-2017-732: Preparation, testing and delivery of isoelectric point standards

The project continues long-term cooperation of both participants. The low-molecular mass pI markers were synthesized and examined with aim to fill up and deliver the previously described compounds.

Čmelík, Richard
Ústav analytické chemie, 2017

Determination of Inorganic Arsenic in Samples of Marine Origin
Marschner, Karel; Matoušek, Tomáš; Dědina, Jiří; Musil, Stanislav
2017 - English
A fast screening method for determination of inorganic arsenic in marine samples was developed. This method is based on selective\nhydride generationanddetectionby inductively coupled plasmamass spectrometry. Using a high concentration of hydrochloric acid\ntogether with hydrogen peroxide for hydride generation leads to selective conversion of inorganic arsenic species into arsane. The\naccuracy of this method was verified by comparative analyse by high performance liquid chromatography coupled with hydride generationandatomic\nfluorescence detection. Keywords: arsenic speciation; inorganic arsenic; hydride generation Available on request at various institutes of the ASCR
Determination of Inorganic Arsenic in Samples of Marine Origin

A fast screening method for determination of inorganic arsenic in marine samples was developed. This method is based on selective\nhydride generationanddetectionby inductively coupled plasmamass ...

Marschner, Karel; Matoušek, Tomáš; Dědina, Jiří; Musil, Stanislav
Ústav analytické chemie, 2017

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