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Metrology and Measurement Systems
EN This paper presents a voltammetric segmented voltage sweep mode that can be used to identify and measure heavy metals' concentrations. The proposed sweep mode covers a set of voltage ranges that are centered around the redox potentials of the metals that are under analysis. The heavy metal measureme[...]
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Polish Journal of Chemistry
EN 34-membered macrocyclic hexaamine containing two independent N-3 donor sets forms homodinuclear transition metal complexes with cobalt(II), copper(II), and nickel(II). Titration experiments show that the homodinuclear complexes are formed exclusively without formation of mononuclear complexes. Displ[...]
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Polish Journal of Chemistry
EN The processes on the silver electrode during its anodic polarization in concentrated chloride solutions (1,5 - 5,0 M) are identified. The analysis of the potentiodynamic E-I relationships showed, that the anodic polarization depends on the concentration of Cl ions and runs through two steps (peaks A[...]
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Nukleonika
EN The ability of platinum uptake by hydroponically cultivated plants - Indian mustard (Sinapis alba L.) and Anawa maize (Zea mays L.) - was investigated. The efficiency of the transport of platinum compounds from the roots to above ground organs was estimated. For platinum determination in plant sampl[...]
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Science, Technology and Innovation
EN Voltammetry is the general term for all techniques in which the current is measured as a function of electrode potential. The voltammetric techniques can be applied for the quantitative analysis of inorganic and organic species and are best suited for substances which can be either oxidized or reduc[...]
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Chemia Analityczna
PL Przebadano woltamperometrycznie tynidazol z użyciem elektrody z węgla szklistego zmodyfikowanej warstwą kompozytową składającą się z wielościennych nanorurek węglowych, tetrafluoroboranu l-bulylo-3-metyloimidazolu i chitozanu. Wyraźny pik redukcji pojawił się przy -0,688 V. Porównując ten pik do pik[...]
EN A multi-walled carbon nanotube/l-butyl-3-methylimidazolium tetrafluoroborate/chitosan (MWCNT/IL/CS) composite film - modified glassy carbon electrode (OCR) was fabricated by spin coating. Electrochemical behavior of tinidazole at the composite film electrode was investigated applying voltammetry. A [...]
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Polish Journal of Chemistry
EN The electrochemical behavior of the nitro radical anion resulted from the reduction of furazolidone has been studied in mixed aqueous-dimethylformamide (DMF) solvent at glassy carbon electrode (GCE) by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Furazolidone is reduced in two c[...]
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Polish Journal of Chemistry
2004 Vol. 78 / nr 9 1553-1565
EN Several ferrocene derivatives, including 1,1_-ferrocenedimethanol, ferrocene, sodium ferrocenesulfonate, sodium ferroceneacetate and ferrocenylmethyltrimethylammonium hexafluorophosphate, were used to examine possible situations in voltammetry, if two of them are present together in the cell under t[...]
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Polish Journal of Chemistry
EN The self-assembly and electrochemical properties of mixed self-assembled monolayer (SAMs) of 4-methoxy-4_-(N-(2__-mercaptoethyl)amino)carbonyl)azobenzene (C1AzoC2SH) and 1-butanethiol (C4SH) were studied on the gold electrode by cyclic voltammetry. Usually the azobenzene groups exhibit very sluggish[...]
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Polish Journal of Chemistry
EN The anodic behavoiur of Zn, Cd, and Hg in molten trienthylammonium tri- and difluorides has been presented using the cyclic voltammetry and the high frequency cyclic resistometry. Oxidation potentals of these metals are also given. The usefulness of CR method is discussed.
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International Letters of Chemistry, Physics and Astronomy
EN The aim of this study was to determine the phenolic and flavonoid content, and antioxidant properties of tow samples of bee pollen harvested from Algeria. The content of total polyphenolic compounds, flavonoids, and antioxidant activity by the cyclic voltammetry method were determined. The contents [...]
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Archives of Metallurgy and Materials
EN Codeposition of antimony and tin from acidic chloride and chloride-sulfate baths was investigated. The calculations of distribution of species showed domination of neutral SnCl2 and anionic SbCl4 - complexes in chloride solution, while in the presence of sulfate ions[...]
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Chemia Analityczna
PL Opracowano czułą, woltamperometrycznąmetodę oznaczania metyloparationu z użyciem elektrody z węgla szklistego zmodyfikowanej błonką kompozytową z jednościennych nanorurek węglowych i fosforanu dicetylu. Zbadano elektrochemiczne właściwości metyloparationu. Otrzymane wyniki wskazują, że zastosowana e[...]
EN A sensitive voltammetric procedure for the determination of methyl-parathion at a glassy carbon electrode (GCE) modified with a single-walled carbon nano-tube (SWCNT) / dicetyl phosphate (DCP) composite film has been developed. The electrochemical behaviours of methyl-parathion at the composite film[...]
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Chemia Analityczna
PL W pracy przedstawiono problem oceny efektów wygładzania krzywych woltamperomet-rycznych. Jako kryterium przyjęto poprawę kształtu krzywych i parametrów analitycznych metody. Zaproponowany algorytm wykorzystano podczas oznaczania niskich stężeń kadmu, ołowiu, talu, cynku, miedzi oraz arsenu. Biorąc p[...]
EN An evaluation of smoothing procedures applicable to experimental voltammograms has been described. As a criterion of evaluation, an improvement of the curve shape and analytical parameters has been considered. The proposed algorithm has been implemented during determination of low concentrations of [...]
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Chemia Analityczna
PL Badano woltamperometryczne zachowanie parationu metylu (MPT) stosując elektrodę z węgla szklistego, którą zmodyfikowano warstwą poli-L-cysteiny otrzymaną w buforze o pH 8,0 zawierającym 5 x 10-3 mol L-1 L-cysteiny. Do badań stosowano cykliczną i zwykłą woltamperometrię. Kształt[...]
EN Glassy carbon electrode (GCE) was modified with a poly-L-cysteine film by electropolyme-rization in a phosphate buffer solution of pH 8.0 containing 5.0 x 10~3 mol L~' L-cysteine. Voltammetric behaviour of methyl parathion (MPT) at the obtained film-modified electrode was investigated applying cycli[...]
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Elektronika : konstrukcje, technologie, zastosowania
PL W pracy badano wpływ nagromadzenia się jonów miedzi(l), cyny(IV) i wielokrotnego wykorzystania roztworu na szybkość procesu immersyjnego cynowania i wybrane właściwości warstw cyny. Wykonywano osadzania warstw cyny z roztworów z dodatkami jonów miedzi(l) lub cyny(IV) oraz wielokrotne osadzanie warst[...]
EN In this work the influence accumulation of copper(l) and tin(IV) ions in solution as well as repeated use of solution on immersion process and selected properties of tin layer were investigation. Deposition of tin layers from solutions contain addition of copper(l) or tin(IV) ions as well as repeate[...]
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Przemysł Chemiczny
2010 T. 89, nr 5 696-699
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Ecological Chemistry and Engineering. S
PL W optymalnych warunkach opracowanej wcześniej metody oznaczania Fenitrotionu i Malationu (insektycydów fosforoorganicznych) katodową woltamperometrią stńpingową w technice różnicowej pulsowej zbadano wpływ na oznaczanie Fenitrotionu i Malationu reprezentatywnych związków powierzchniowo czynnych, jak[...]
EN Under optimal conditions of a previously developed cathodic stripping voltammetry method for Fenitrothion and Malathion (organophosphorus insecticides) determination using differential pulse technique influence of representative surfactants on Fenitrothion and Malathion determination was examined. R[...]
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Chemia Analityczna
PL Opierając się- na ogólnej teorii Miland i Oldhama [I] wyprowadzono równania na zależności granicznego prądu stacjonarnego od stężenia elektrolitu podstawowego dla dowolnie wybranych ładunków jonów. Model jest ograniczony do nienaładowanych produktów reakcji elektrodowych i do zbliżonych współczynnik[...]
EN Equations for the dependence of the limiting steady-state current on concentration of supporting electrolyte for arbitrarily charged species were developed based on the gen-eral theory of steady-state voltammetry by Myland and Oldham [ 1 ]. The only limitations of the proposed model are that the ele[...]
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Polish Journal of Chemistry
EN The complex formation of Cu2+ with some recently synthesized methyl-substituted ethylenediimines in binary dimethylformamide-ethanol mixtures was studied by differential pulse voltammetry. The stoichiometry and the stability of the complexes were determined by monitoring the increasing complex peak [...]
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