National Repository of Grey Literature 231 records found  beginprevious199 - 208nextend  jump to record: Search took 0.01 seconds. 
Voltammetric Determination of one of Styrene Metabolites - Phenylglyoxylic Acid - in Urine Using Graphite Composite Electrode
Navrátil, Tomáš ; Shanmugam, K. ; Šenholdová, Z. ; Heyrovský, Michael ; Surovcová, H.
Phenylglyoxylic acid is metabolized in human body from vinylbenzene (styrene) (from which polystyrene is produced). Presented work deals with determination of this metabolite in human urine using carbon composite electrode.
Silver Composite Electrode for Voltammetric Determination of Halides
Šebková, Světlana ; Navrátil, Tomáš ; Kopanica, M.
The application of the silver composite electrode prepared from silver, graphite powder and methacrylate resin for the voltammetric determination of halogenide ions was studied.
Determination of Cystine, Cysteine and Homocysteine in Biological Matrix
Bašová, Pavlína ; Navrátil, Tomáš ; Šestáková, Ivana ; Novotný, Ladislav ; Šenholdová-Dlasková, Z.
In order to determine cystine, cysteine and homocysteine contents separately in a mixture of these compounds in real urine samples from patients suffering from cystinuremia and homocistinuremia, three voltammetric methods were tested: Brdička reaction, reduction of their complexes with copper ions and cathodic reduction of cystine. In all cases the hanging mercury drop electrode was used.
Study of Interactions of Damaged DNA with Osmium Complexes Using Elimination Voltammetry with Linear Scan
Navrátil, Tomáš ; Josypčuk, Bohdan
Complexes of Os(L), where L means tertiary amines, proved to be very effective labels of structure, electroactivity or damage of deoxyribonucleic acid (DNA). In this work thymine- Os(bipyridine) complexes and signals belonging to the catalytic hydrogen evolution were studied using elimination voltammetry with linear scan.
Metabolic Causes of Thiodiglycolic Acid Formation and Importance of its Determination
Šenholdová-Dlasková, Z. ; Navrátil, Tomáš ; Přistoupil, T. ; Přistoupilová, K.
Thiodiglycolic acid (TDGA), is one of the normal products of human metabolism, and occurs at low concentrations in urine. An increased level of TDGA in urine is a sensitive indicator of human organism exposure to some physiologically active or toxic substances, gases and vapors (vinylchloride monomer, etc.). The attention was paid to suggestion and explanation of the metabolic pathways related to thiodiglycolic acid in non-exposed organism.
Electrochemical Behavior of Chosen Chinoxaline-2-on Derivates on the Mercury Electrode
Zimpl, M. ; Navrátil, Tomáš ; Kotouček, M. ; Barták, P. ; Zuman, P.
The mechanism of the electrochemical behavior of 3-substituated derivates of chinoxaline-2-on on the mercury electrode was studied with the aim to explain the behavior of these drugs in human body. Tast and normal pulse polarography, direct current, cyclic, differential voltammetry, elimination voltammetry with linear scan etc. were applied.
Voltammetric Behaviour of Cd, Zn-Metallothionein on Mercury and Carbon Composite Paste Electrodes
Šestáková, Ivana ; Navrátil, Tomáš ; Kopanica, M.
Cd(II) and Zn(II) complexes of rabbit liver metallothionein, Cd5Zn2 MT, exhibit on hanging mercury drop electrode inert behaviour, reduction takes place at adsorbed state. The behaviour corresponding to anodic stripping voltammetry on HMDE was observed at carbon composite paste electrode, using constant current chronopotentiometry.

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