Zobrazeno 1 - 10
of 98
pro vyhledávání: '"Jaroslav Zýka"'
Publikováno v:
Analytical Letters. 34:1979-2004
Cyclodextrins play an important role in all major areas of modern instrumental analysis. Most of the interest in cyclodextrins results from their ability to form inclusion (host-guest) complexes with a variety of molecules and ions in aqueous solutio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6cb56a77efb85db9353bd2a6a773ac5
https://doi.org/10.1081/al-100106834
https://doi.org/10.1081/al-100106834
Publikováno v:
Analytical Letters. 32:2531-2543
The inductively coupled plasma mass spectrometry (ICP-MS), a relatively new and intensively developing instrumental method for simultaneous determination of trace elements in different matrices is reviewed. Its basic principles and experimental setti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::836f2e3c9b406b2529bc7437d5ec94a0
https://doi.org/10.1080/00032719908542986
https://doi.org/10.1080/00032719908542986
Autor:
Karel Štulík, Jaroslav Zýka
Publikováno v:
TrAC Trends in Analytical Chemistry. 12:x-xii
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef226317bf52a8bd71f65f442dbe4e8e
https://doi.org/10.1016/0165-9936(93)87048-3
https://doi.org/10.1016/0165-9936(93)87048-3
Autor:
Jaroslav Zýka, Karel Štulík
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 343:832-833
Analytical Chemistry is an applied, experimental field of natural science and is based not only on chemistry, but also on physics, biology, information theory and many fields of technology. The purpose of Analytical Chemistry is to provide informatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67e17ae1ecc6a7986aabce0015e63a81
https://doi.org/10.1007/bf00328569
https://doi.org/10.1007/bf00328569
Publikováno v:
Microchemical Journal. 20:363-366
A potentiometric reductimetric method for the determination of platinum (Pt(IV)Pt(II)) with a standard Fe(II) solution in an alkaline medium of mannitol is described. The method, the error of which does not exceed 2%, can be used in the presence o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e57ace6d6b98754a3ee8ec7ed524977
https://doi.org/10.1016/0026-265x(75)90148-4
https://doi.org/10.1016/0026-265x(75)90148-4
Publikováno v:
Mikrochimica Acta. 65:141-145
It is possible to titrate Os(VIII) potentiometrically [Os(VIII) → Os(VI)] with iron(II) in potassium hydroxide medium in the presence of mannitol or triethanolamine as complexing agents. The method is suitable for the determination of 0.5–20 mg o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30858e48fa61cbbfccd50bc0cf3d4bef
https://doi.org/10.1007/bf01217820
https://doi.org/10.1007/bf01217820
Publikováno v:
Analytica Chimica Acta. 94:149-154
In titrations with iron(II) sulphate in alkaline solutions of sorbitol, the iron(III) formed is bound in a strong complex and the formal redox potential of the Fe(III)/Fe(II) system is decreased to —1.10 V (SCE; 0.5 M sorbitol, 2 M KOH). This permi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5677eddf03584d8e6fe711465bfba38e
https://doi.org/10.1016/s0003-2670(01)83640-0
https://doi.org/10.1016/s0003-2670(01)83640-0
Autor:
Jaroslav Zýka
Publikováno v:
Pure and Applied Chemistry. 44:685-690
A survey of possible new applications of titration methods is given. Special attention is paid to redox titrations, in which equilibria among reactants and hence redox potentials can be affected by e.g. complexing agents, suitable selection of the me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4301587096df102ecc67576f3c177b0e
https://doi.org/10.1351/pac197544030685
https://doi.org/10.1351/pac197544030685
Autor:
Hana Tománková, Jaroslav Zýka
Publikováno v:
Microchemical Journal. 25:281-288
The stability of a solution of AzDC in acid medium (0.1 N HCl) was studied using thinlayer chromatography on cellulose. The Rf values of AzDC and its decomposition products are given in Table 1. The time course of the hydrolytic decomposition of AzDC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f12bb102d2103432b4c18b4169326b8
https://doi.org/10.1016/0026-265x(80)90266-0
https://doi.org/10.1016/0026-265x(80)90266-0
Autor:
Jaroslav Zýka, Hana Tománková
Publikováno v:
Microchemical Journal. 23:400-406
The stability of 1% solutions of cytostatics Ftorafur and 5-fluorouracil was studied during oxidation with hydrogen peroxide in alkaline (0.1 N NaOH), acidic (0.1 N H2SO4), and weakly acidic (pH 5) solutions by thin-layer chromatography. The decrease
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e32697cf3ea0912c9aecbc6e52ac2b70
https://doi.org/10.1016/0026-265x(78)90094-2
https://doi.org/10.1016/0026-265x(78)90094-2