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Journal of Electroanalytical Chemistry (1959)最新文献

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Voltammetric determination of iodide and bromide at the rotating pyrolytic graphite electrode 旋转热解石墨电极上碘化物和溴化物的伏安法测定
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80121-3
G. Dryhurst, Philip J. Elving
{"title":"Voltammetric determination of iodide and bromide at the rotating pyrolytic graphite electrode","authors":"G. Dryhurst,&nbsp;Philip J. Elving","doi":"10.1016/0022-0728(66)80121-3","DOIUrl":"10.1016/0022-0728(66)80121-3","url":null,"abstract":"<div><p>A voltammetric procedure has been developed for the determination of iodide and bromide by oxidation at the rotating pyrolytic graphite electrode (R.P.G. electrode) in sulfate background. The method can be extended to cover the determination of as low an iodide concentration as 0.01 m<em>M</em> in the presence of large excesses of bromide and chloride, and the determination of bromide in concentrations as low as 0.1 m<em>M</em> in the presence of large excesses of chloride.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 416-421"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80121-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53133667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
The equivalent circuit for the electrical double layer 双电层等效电路
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 Epub Date: 2010-12-07 DOI: 10.1016/0022-0728(66)80127-4
G.C. Barker
{"title":"The equivalent circuit for the electrical double layer","authors":"G.C. Barker","doi":"10.1016/0022-0728(66)80127-4","DOIUrl":"10.1016/0022-0728(66)80127-4","url":null,"abstract":"<div><p>An aperiodic equivalent electrical circuit for the electrical double layer at the interface between an electrode and a dilute electrolyte solution is derived. After account has been taken of small changes in electrolyte concentration near the electrode surface when the potential is slightly varied, the circuit contains resistive as well as reactive components. The apparent differential capacity obtained by measuring the a.c. impedance of the interface may differ from the zero frequency value of the capacity if the electrolyte concentration is small. A method for the determination of surface excesses of ionic components is suggested.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 495-503"},"PeriodicalIF":0.0,"publicationDate":"1966-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-0728(66)80127-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 38
Diffusion-limited adsorption at spherical electrodes 球形电极上的扩散限制吸附
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-10-01 Epub Date: 2010-12-07 DOI: 10.1016/S0022-0728(96)80004-0
Sidney L. Philips
{"title":"Diffusion-limited adsorption at spherical electrodes","authors":"Sidney L. Philips","doi":"10.1016/S0022-0728(96)80004-0","DOIUrl":"10.1016/S0022-0728(96)80004-0","url":null,"abstract":"<div><p>Both the diffusion coefficient and maximum surface concentration of a surfactant may be calculated from potentiostatic current.time curves obtained using spherical electrodes. The theoretically-derived relation between the maximum surface concentration, diffusion coefficient, and time at which maximum surface coverage is attained was tested by adding tetrabutylammonium ion to a solution of Cd(II) in 0.1 <em>M</em> perchloric acid.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 4","pages":"Pages 294-299"},"PeriodicalIF":0.0,"publicationDate":"1966-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0022-0728(96)80004-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55558244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 23
New indicating system: twin electrodes, at zero current 新的指示系统:双电极，零电流
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-10-01 Epub Date: 2010-12-07 DOI: 10.1016/S0022-0728(96)80003-9
E. Kirowa-Eisner, M. Ariel
{"title":"New indicating system: twin electrodes, at zero current","authors":"E. Kirowa-Eisner,&nbsp;M. Ariel","doi":"10.1016/S0022-0728(96)80003-9","DOIUrl":"10.1016/S0022-0728(96)80003-9","url":null,"abstract":"<div><p>A mechanism for the new indicating system “twin electrodes, at zero current”, is proposed. In the titration cell, even with efficient stirring, regions of different liquid velocity arise, resulting in different thicknesses of the diffusion layers at the electrodes placed in the solution. This causes the electrodes to respond at different rates to changes in the solution during the titration. The potential change of each electrode is given by an “S”-shaped curve. Owing to the small difference in their rates of response, a sharp peak is obtained when their potential difference is recorded throughout the titration.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 4","pages":"Pages 286-293"},"PeriodicalIF":0.0,"publicationDate":"1966-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0022-0728(96)80003-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55558232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Potential sweep chronoamperometry in dimethyl sulfoxide at the hanging mercury drop electrode 挂汞电极上二甲亚砜中电位扫描计时电流测定
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-10-01 Epub Date: 2010-12-07 DOI: 10.1016/S0022-0728(96)80007-6
Jerry L. Jones, Herbert A. Fritsche Jr.
{"title":"Potential sweep chronoamperometry in dimethyl sulfoxide at the hanging mercury drop electrode","authors":"Jerry L. Jones,&nbsp;Herbert A. Fritsche Jr.","doi":"10.1016/S0022-0728(96)80007-6","DOIUrl":"10.1016/S0022-0728(96)80007-6","url":null,"abstract":"<div><p>Electroanalytical studies in dimethyl sulfoxide have been extended to the hanging mercury drop electrode. Potential sweep chronoamperometry was utilized with potentiostatic control of the working electrode. Several ions have been examined for diffusion control in this system by means of the Randies-Sevčik equation. Halfwave potentials of selected depolarizers and polarization limits of several carrier electrolytes have been measured.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 4","pages":"Pages 334-340"},"PeriodicalIF":0.0,"publicationDate":"1966-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0022-0728(96)80007-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55558294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Determination polarographique de la nitrohydroxylamine 硝基羟胺的极谱测定
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-10-01 Epub Date: 2010-12-07 DOI: 10.1016/S0022-0728(96)80008-8
A. Cǎlusaru
{"title":"Determination polarographique de la nitrohydroxylamine","authors":"A. Cǎlusaru","doi":"10.1016/S0022-0728(96)80008-8","DOIUrl":"10.1016/S0022-0728(96)80008-8","url":null,"abstract":"<div><p>The catalytic wave of nitrohydroxylamine in the presence of divalent cobalt can be used for the polarographic determination of this substance. The catalytic waves are well-developed in the following supporting electrolyte solution: NH<sub>4</sub>Cl, 0.05 <em>M</em>; NH<sub>4</sub>OH, 0.025 <em>M</em>; gelatine, 0.02%. The cobalt concentration should be about 10<sup>−3</sup><em>M</em> for 10<sup>−4</sup>–10<sup>−5</sup><em>M</em> N<sub>2</sub>O<sub>3</sub><sup>2−</sup> and 2.5 × 10<sup>−5</sup><em>M</em> for 10<sup>−6</sup>–10<sup>−</sup><em>M</em>N<sub>2</sub>O<sub>3</sub><sup>2−</sup>. The other nitrogen-containing compounds present such as nitrate, nitrite, hyponitrite and nitramide have little or no effect on the catalytic wave of nitrohydroxylamine. Only hydroxylamine interferes with the determination.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 4","pages":"Pages 341-346"},"PeriodicalIF":0.0,"publicationDate":"1966-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0022-0728(96)80008-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55558305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Chronoamperometrische untersuchung metallischer monoschichten 金属单层的年代计算
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-10-01 Epub Date: 2010-12-07 DOI: 10.1016/S0022-0728(96)80005-2
E. Schmidt, H.R. Gygax
{"title":"Chronoamperometrische untersuchung metallischer monoschichten","authors":"E. Schmidt,&nbsp;H.R. Gygax","doi":"10.1016/S0022-0728(96)80005-2","DOIUrl":"10.1016/S0022-0728(96)80005-2","url":null,"abstract":"<div><p>The reduction of metals from aqueous solutions on the surface of solid electrodes is performed chronoamperometrically to study monolayer effects using chamber type indicator electrodes. A metallic monolayer is defined as a layer of electrically neutral foreign metal atoms at the electrode-electrolyte interface, the deposit having the approximate thickness of one atomic diameter.</p><p>The shape of current-time curve depends upon the structure of the activity isotherm within the region of unsaturated (submonoatomic) surface coverage of the electrode. A single current peak is observed during the deposition of Sn on Bi, Tl on Sn, and Cd on Bi, Pb and Sn. The reduction of Tl on Au, Ag and Cu, of Pb on Ag and Cu, and of Bi on Ag, however, leads to the splitting of the current transient into a so-called main peak with unit activity of the electrodeposited depolarizer, and a less negative prewave region, within which the activity of the reduced metal is less than unity.</p><p>The current balance of the electrode reaction is verified by coulometric evaluation of the chronoamperograms.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 4","pages":"Pages 300-319"},"PeriodicalIF":0.0,"publicationDate":"1966-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0022-0728(96)80005-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55558251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 87
Application of mercury-plated graphite electrodes to voltammetry and chronopotentiometry 镀汞石墨电极在伏安法和计时电位测定中的应用
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-10-01 Epub Date: 2010-12-07 DOI: 10.1016/S0022-0728(96)80001-5
S.P. Perone, K.K. Davenport
{"title":"Application of mercury-plated graphite electrodes to voltammetry and chronopotentiometry","authors":"S.P. Perone,&nbsp;K.K. Davenport","doi":"10.1016/S0022-0728(96)80001-5","DOIUrl":"10.1016/S0022-0728(96)80001-5","url":null,"abstract":"<div><p>The preparation and application of mercury-plated, graphite electrodes has been discussed. The electrodes were prepared by controlled.potentialelectrodeposition on the exposed planar surface of a wax.impregnated graphite electrode. The mercury-plated electrodes were evaluated by voltammetric and chronopotentiometric applications to various reversible and irreversible systems. Experimental data were compared to rigorous voltammetric theory. Theory for chronopotentiometric curves at thin-film electrodes with amalgam-forming substances was developed, and experimental correlations with the Cd(II) system were made. In each case correlations were good.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 4","pages":"Pages 269-276"},"PeriodicalIF":0.0,"publicationDate":"1966-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0022-0728(96)80001-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55558210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 26
Utilisation de l'tmpedance operationnelle pour la determination des coefficients de diffusions1 使用操作参数确定扩散系数1
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-10-01 Epub Date: 2010-12-07 DOI: 10.1016/S0022-0728(96)80002-7
Eugéne Levart, Emmanuel Poirier, D'angÉ D'orsay
{"title":"Utilisation de l'tmpedance operationnelle pour la determination des coefficients de diffusions1","authors":"Eugéne Levart,&nbsp;Emmanuel Poirier,&nbsp;D'angÉ D'orsay","doi":"10.1016/S0022-0728(96)80002-7","DOIUrl":"10.1016/S0022-0728(96)80002-7","url":null,"abstract":"<div><p>Analytical expressions for the operational impedance, <em>Zs</em>, valid for all relaxation methods, are proposed for various types of electrode reactions.</p><p>Used experimentally, they enable kinetic parameters, and, more particularly, diffusion coefficients of reacting species to be determined.</p><p>The experimental part of the work is concerned with measurements made under galvanostatic pulse conditions for the Hg/Hg<sub>2</sub><sup>2+</sup> system in HClO<sub>4</sub> media at 30°. The results, stated in terms of the Laplace operator function, <em>s</em>, have shown that the diffusion coefficient of mercury ion is approximately constant at supporting electrolyte concentrations between 0.1 and 2 <em>M</em>.</p><p>The merits of the proposed, procedure are compared, with those of other electrochemical methods for the determination of diffusion coefficients.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 4","pages":"Pages 277-285"},"PeriodicalIF":0.0,"publicationDate":"1966-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0022-0728(96)80002-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55558221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Potentiometric study on the interaction of Ag+ ions with gelatin Ag+离子与明胶相互作用的电位法研究
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-10-01 Epub Date: 2010-12-07 DOI: 10.1016/S0022-0728(96)80006-4
Pietro Lanza, Ileana Mazzei
{"title":"Potentiometric study on the interaction of Ag+ ions with gelatin","authors":"Pietro Lanza,&nbsp;Ileana Mazzei","doi":"10.1016/S0022-0728(96)80006-4","DOIUrl":"10.1016/S0022-0728(96)80006-4","url":null,"abstract":"<div><p>From a study of the Ag<sup>+</sup>- gelatin system it can be deduced that complex formation is possible in the whole pH-range examined (1.5–10). The ligand groups of gelatin, carboxyl, α- and ϵ-amino and imidazole groups, can be active simultaneously; the predominant action of one or other group depends on the pH. In alkaline environment (pH &gt; 8) the Ag<sup>+</sup> complex directly affects the peptide link.</p><p>From the observed pAg-values and the measurement of the number of H<sup>+</sup>ions displaced/Ag<sup>+</sup>ion complexed, it can be deduced that the interaction Ag<sup>+</sup>- gelatin leads essentially to the formation of chelate complexes.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 4","pages":"Pages 320-333"},"PeriodicalIF":0.0,"publicationDate":"1966-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0022-0728(96)80006-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55558280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
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