polarography


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Related to polarography: Voltammetry

po·lar·og·ra·phy

 (pō′lə-rŏg′rə-fē)
n.
An electrochemical method of quantitative or qualitative analysis based on the relationship between an increasing current passing through a solution and the increasing voltage used to produce the current.


po·lar′o·graph′ic (-lăr′ə-grăf′ĭk) adj.
po·lar′o·graph′i·cal·ly adv.

polarography

(ˌpəʊləˈrɒɡrəfɪ)
n
(Chemistry) a technique for analysing and studying ions in solution by using an electrolytic cell with a very small cathode and obtaining a graph (polarogram) of the current against the potential to determine the concentration and nature of the ions. Because the cathode is small, polarization occurs and each type of anion is discharged at a different potential. The apparatus (polarograph) usually employs a dropping-mercury cathode
polarographic adj

po•lar•og•ra•phy

(ˌpoʊ ləˈrɒg rə fi)

n.
a technique for analyzing an electrolytic solution by comparing the current passed through a specimen with its voltage.
[1935–40]
po•lar`o•graph′ic (-ˌlær əˈgræf ɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.polarography - an electrochemical method of chemical analysis
chemical analysis, qualitative analysis - the act of decomposing a substance into its constituent elements
References in periodicals archive ?
Thus, it was considered proper to explore the use of those theories of stationary electrode voltammetry / polarography which are available in the literature for the evaluation of kinetic parameters for the dimerization of MV.
Another scientist Professor Jaroslav Heyrovsk was awarded the Nobel Prize in Chemistry 1959 for development of polarography.
Our method is a direct method, and, along with polarography [10, 78], enables continuous tracing of the lipid peroxidation.
Many analytical techniques have been developed for the identification and determination of various synthetic food colorants, such as thin-layer chromatography [4,5], adsorptive voltammetry [6], and differential pulse polarography [7], derivative spectrometry [812] and spectrophotometric methods in combination with chemometrics [13,14], but all of them require time- consuming pretreatment or cannot be applied to complex colorant mixtures.
Despite their advantages, all these methods have problems and limitations, including the use of organic and toxic solvents or the use of toxic mercury in polarography method.
The objective of this study was to survey the ability of two bacterial isolates, namely TBZ9 and TBZ23, isolated from Urmia Lake in Iran [19], to reduce Fe(III) to Fe(II) by the aid of differential pulse polarography.
The Cr, analysed by atomic absorption spectroscopy and then polarography, was not in the highly toxic Cr(VI) form but mainly occurred as Cr(III) (oxides and hydroxides).
Although many sophisticated techniques such as pulse polarography, HPLC, AAS, ICP- AES and ICP-MS are available for the determination of zinc at trace levels in numerous complex materials, factors such as the low cost of the instrument, easy handling, lack of requirement for consumables and almost no maintenance have caused spectrophtometry to remain a popular technique, particularly in laboratories of developing countries with limited budget.
8) Cell death can be studied using various methods such as light and electron microscopy, IF microscopy, special stains, gel electrophoresis, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL), flow cytometry, western blotting, colorimetric and fluorometric assays, immunoblotting, polarography, co immunoprecipitation studies, genetic studies and ultrasound.
Theory of stationary electrode polarography single scan and cyclic methods applied to reversible, irreversible and kinetics systems.
Theory of stationary electrode polarography, single scan and cyclic methods applied to reversible, irreversible and kinetic systems.
We offer solutions for laboratory and online measurements based on techniques like titration, ion chromatography, colormetric, ion selective electrode and polarography.