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National Repository of Grey Literature 5 records found  Search took 0.01 seconds. 
Kryogenní záchyt arsenu pro speciační analýzu arsenu technikou hydridového generování s detekcí atomovou absorpční spektrometrií
 Svoboda, Milan ; Kratzer, Jan ; Vobecký, Miloslav ; Rychlovský, P. ; Dědina, Jiří
The general aim of this work was to contribute to further improvement of the method for complete speciation analysis of trivalent and pentavalent human metabolites of arsenic in complex biological matrices. The main target of this work was to investigate processes during the cryotrapping procedure and find optimum conditions.
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Thioglykolová kyselina jako on-line předredukční činidlo pro speciační analýzu arsenu pomocí metody selektivního generování hydridů s kolekcí vymrazováním a atomovou absorpční spektrometrií
 Musil, Stanislav ; Matoušek, Tomáš ; Rychlovský, P.
This work represents an improvement of current method of speciation analysis for determination of tri- and pentavalent inorganic, mono-, di-, and trimethylated arsenicals using atomic absorption spectrometry as a detector. Presented study shows that thioglycolic acid is suitable for an on-line pre-reduction which simplifies sample pretreatment and increases sample throughput.
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Vývoj L-designu multiatomizátorů hydridů pro atomovou absorpční spektrometrii
 Grossová, Olga ; Dědina, Jiří
A novel design of hydride multiatomizer was described. The performence of several modifications of the multiatomizer with variety of optical tubes, especially porous quartz and multiple perforated quartz, has been discussed.
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Záchyt hydridů As a Se na křemenném povrchu - krok směrem k in-situ prekoncentraci v křemenných atomizátorech s detekcí AAS
 Kratzer, Jan ; Dědina, Jiří ; Rychlovský, P.
An optimization study of arsine and selenum hydride preconcentration at the quartz surface is presented. A novel apparatus design consisting of a quartz trap integrated with a quartz multiatomizer is described.
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Proč by měl použít analytický chemik ke stanovení AAS zakoncentrování hydridu na křemenném povrchu
 Kratzer, Jan ; Dědina, Jiří ; Rychlovský, P.
An evaluation of extremely simple method for antimony and bismuth preconcentration based on the novel experimental approach, in-situ trapping of stibine and bismuthine in externally heated quartz tube atomizers, is presented.
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