National Repository of Grey Literature 5 records found  Search took 0.03 seconds. 
Modification of gold metal surfaces by thiolated calix[4]arene and undecanethiol: Comparative studies
Šustrová, Barbora ; Mareček, Vladimír ; Štulík, Karel
This study continues our investigation of the calix[4]arene self-assembly process. In this paper we compare the electrochemical deposition of two structurally different compounds, calix[4]arene and undecanethiol, and the electrochemical behavior of a gold electrode modified by them.
Electrochemical sensor: Mediator Deposition by drop evaporation
Mansfeldová, Věra ; Janda, Pavel ; Tarábková, Hana
Among many different kinds of electrode surface modification procedures, the surface coating by vaporized mediator solution is still used as a simple and effective method for preparation of sensing electrode. Surface of glassy carbon (GC) is often used as a supporting collector, but it requires polishing, rinsing and sonication prior to mediator deposition. In this paper, we present common methods of modification of highly oriented pyrolytic graphite (HOPG) and GC surface, respectively, from the point of surface nanomorphology investigated by atomic force microscopy.
Gold chemical vapor generation by tetrahydroborate reduction for AAS: Radiotracer efficiency study and characterization of gold species
Musil, Stanislav ; Arslan, Y. ; Kratzer, Jan ; Vobecký, Miloslav ; Benada, Oldřich ; Matoušek, Tomáš ; Rychlovský, P. ; Ataman, O. Y. ; Dědina, Jiří
The main objective was to assess the generation efficiency in the optimized method of chemical vapor generation of gold by means of 198,199Au radioindicator. We also intended to characterize the volatile Au species formed by tetrahydroborate reduction.
Arsenic speciation analysis by hydride generation – cryotrapping – atomic fluorescence spectrometry with flame-in-gas-shield atomizer
Svoboda, Milan ; Musil, Stanislav ; Matoušek, Tomáš ; Rychlovský, P. ; Dědina, Jiří
The main target of this work was further improvement of detection limits in the method of arsenic speciation analysis of tri- and pentavalent human metabolites in complex biological matrices. The method combines selective hydride generation with preconcentration and subsequent separation of substituted arsines in a cryogenic trap.
Arsenic speciation analysis by cryogenic trapping – hydride generation – atomic absorption spectrometry; Investigation of water vapour dryers
Svoboda, Milan ; Taurková, Petra ; Matoušek, Tomáš ; 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.

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