Zobrazeno 1 - 10
of 112
pro vyhledávání: '"KAREL VYTŘAS"'
Publikováno v:
Potravinarstvo, Vol 12, Iss 1, Pp 166-172 (2018)
To confirm or disprove previous hypotheses, cyclic voltammetry of 0.5 mM cholecalciferol (vitamin D3) at glassy carbon electrode (GCE) and platinum disk electrode (PtE) in pure acetonitrile and water‑ethanol mixture at 50 mV·s‑1 has been used to
Externí odkaz:
https://doaj.org/article/72c31b99f4d24cfe879a05113b545354
Publikováno v:
Potravinarstvo, Vol 11, Iss 1, Pp 96-105 (2017)
Adsorptive stripping voltammetry (AdSV) of retinol at solid glassy carbon electrode (GCE), carbon paste electrode (CPE) covered by thin layer of multi-wall carbon nanotubes (CPE/MWCNTs) and carbon paste electrode covered by thin layer of single layer
Externí odkaz:
https://doaj.org/article/284898d511b149fa8efc80d2e26f4b76
Publikováno v:
Potravinarstvo, Vol 10, Iss 1, Pp 260-264 (2016)
The aim of this contribution was to check if adsorptive stripping differential pulse voltammetry (AdSDPV) is suitable tool for sensitive simultenous electrochemical detection of lipophilic vitamins. Retinol (vitamin A1), cholecalciferol (vitamin D3),
Externí odkaz:
https://doaj.org/article/d748f67420c24fa3ad4b93f01e567c49
Publikováno v:
Chemosensors, Vol 3, Iss 2, Pp 169-177 (2015)
An alcohol dehydrogenase-based biosensor was prepared and tested for its use to determine ethanol in beer. The biosensor is based on a screen-printed carbon electrode (SPCE) modified by rhodium dioxide and immobilized with a biocatalytic layer contai
Externí odkaz:
https://doaj.org/article/ead7a164087348da99ca59f9647560a3
Autor:
Karel Vytřas, Milovan Purenović, Ivan Švancara, Tatjana Trtić-Petrović, Valéria Guzsvány, Zsigmond Papp, Jelena Ðorđević
Publikováno v:
Sensors, Vol 12, Iss 1, Pp 148-161 (2011)
This paper summarises the results of voltammetric studies on the herbicide 3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea (Linuron), using a carbon paste electrode containing tricresyl phosphate (TCP-CPE) as liquid binder. The principal experimental c
Externí odkaz:
https://doaj.org/article/f7e68cb75d864c4b87267de0389245d9
Publikováno v:
Journal of the Serbian Chemical Society, Vol 74, Iss 10, Pp 1021-1033 (2009)
An overview is given dealing with the applications of carbon paste electrodes in equilibrium potentiometry as well as in electrochemical stripping analysis using both voltammetric and potentiometric modes. Various modifications of carbon pastes and c
Externí odkaz:
https://doaj.org/article/16e8d39ab2c94ee59de13a6c8a04f41e
Publikováno v:
Chemosensors, Vol 5, Iss 1, p 9 (2017)
The aim of this electrochemical study was to ascertain which position of hydroxy groups on a benzene ring provides electroactive products after enzymatic oxidation by laccase originating from the Trametes versicolor mushroom, exhibiting intense redox
Externí odkaz:
https://doaj.org/article/95c017785f834860bde3152a4872177b
Autor:
Amir M. Ashrafi, Valéria Guzsvány, Karel Vytřas, Nikola Ranković, Zoltán Kónya, Sandra Petrović, Ivan Švancara, Jelena Beljin, Božo Dalmacija, Srđan Rončević
Publikováno v:
Microchemical Journal. 146:178-186
© 2018 Elsevier B.V. Bismuth-oxychloride-multiwalled carbon nanotube composite material was applied as surface modifier of glassy carbon electrode (BiOCl-MWCNT/GCE) for rapid and reliable trace level determination of Zn(II) in selected foodstuffs. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad2a33598f9ce6af534badc16af48d90
https://doi.org/10.1016/j.microc.2018.12.053
https://doi.org/10.1016/j.microc.2018.12.053
Publikováno v:
Current Medicinal Chemistry. 25:4138-4151
The features and applications of silver amalgam electrodes in electroanalysis of pharmaceuticals and vitamins are summarized in this review. The state-of-the-art in the preparation and construction of solid silver amalgam electrodes for prolonged and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80949cbb8b1b7736236ceec051b8ed0b
https://doi.org/10.2174/0929867324666170920143245
https://doi.org/10.2174/0929867324666170920143245
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 149:1945-1953
A new voltammetric method without using high cost and health risk nanomaterials has been developed for quantitative determination of ethylvanillin and methylvanillin sum, compounds that are used as food additives. The method is based on direct electr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e542837475e0fb4a552f44e1bb22996
https://doi.org/10.1007/s00706-018-2266-z
https://doi.org/10.1007/s00706-018-2266-z