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Journal of Electroanalytical Chemistry (1959)最新文献

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Polarographic kinetic currents in mixtures of hydrogen peroxide and copper(II) in chloride medium 过氧化氢和铜(II)混合物在氯化物介质中的极谱动力学电流
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 DOI: 10.1016/0022-0728(66)80117-1
I.M. Kolthoff, R. Woods
{"title":"Polarographic kinetic currents in mixtures of hydrogen peroxide and copper(II) in chloride medium","authors":"I.M. Kolthoff,&nbsp;R. Woods","doi":"10.1016/0022-0728(66)80117-1","DOIUrl":"10.1016/0022-0728(66)80117-1","url":null,"abstract":"<div><p>A kinetic current at the dropping mercury electrode is observed in mixtures of hydrogen peroxide and copper(II) in chloride medium in the presence of acid at potentials corresponding to the first copper wave. The kinetic current is due to reaction of copper(I) formed at the electrode with hydrogen peroxide and gives a value of 491 mol<sup>−1</sup> sec<sup>−1</sup> for the rate constant at 25°. The rate constant for this reaction, determined directly is 581 mol<sup>−1</sup> sec<sup>−1</sup>. An adsorbed layer of copper(I) complex at the electrode prevents the electroreduction of hydrogen peroxide.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 385-390"},"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)80117-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53133475","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: 10
Etude thermodynamique de la dissociation du γ-glutamate d'ethyle γ-谷氨酸乙基解离的热力学研究
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 DOI: 10.1016/0022-0728(66)80122-5
J. Llopis, A. Vallin
{"title":"Etude thermodynamique de la dissociation du γ-glutamate d'ethyle","authors":"J. Llopis,&nbsp;A. Vallin","doi":"10.1016/0022-0728(66)80122-5","DOIUrl":"10.1016/0022-0728(66)80122-5","url":null,"abstract":"<div><p>The ionization constants of γ-ethyl glutamate have been determined, from 5–50° from e.m.f. measurements of cells without liquid junctions. The equations for ionization constants as a function of temperature are as follows : <figure><img></figure></p><p>Values for the derived thermodynamic quantities have been calculated. The results were interpreted in relation to those known for glutamic acid and α-amino-esters.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 422-435"},"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)80122-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53133744","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: 0
The potential-dependence of the transfer coefficient in the cr(II)/cr(III) reaction cr(II)/cr(III)反应中传递系数的电位依赖性
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 DOI: 10.1016/0022-0728(66)80130-4
Roger Parsons, Eduardo Passerox
{"title":"The potential-dependence of the transfer coefficient in the cr(II)/cr(III) reaction","authors":"Roger Parsons,&nbsp;Eduardo Passerox","doi":"10.1016/0022-0728(66)80130-4","DOIUrl":"10.1016/0022-0728(66)80130-4","url":null,"abstract":"<div><p>Current—voltage curves for the Cr(II)/Cr(III) electrode reaction at the d.m.e. in acidified 0.5 <em>M</em> NaClO<sub>4</sub> have been measured and analysed by koutecky's method. After correction of the apparent rate constants for double-layer effects by the method proposed by Frumkin, the transfer coefficient shows a potential-dependence which is in quantitative agreement with current theories of electron-transfer reactions.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 524-529"},"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)80130-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134497","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: 49
Etude de phenomenes d'autoinhibition en voltammetrie a variation lineaire de tension 线性电压变化下伏安法自抑制现象的研究
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 DOI: 10.1016/0022-0728(66)80129-8
Etienne Laviron
{"title":"Etude de phenomenes d'autoinhibition en voltammetrie a variation lineaire de tension","authors":"Etienne Laviron","doi":"10.1016/0022-0728(66)80129-8","DOIUrl":"10.1016/0022-0728(66)80129-8","url":null,"abstract":"<div><p>A study of autoinhibition phenomena in linear sweep voltammetry has been made for the case where the inhibiting film is formed by the reversible deposition of an insoluble material. The theoretical curves <em>i</em> = <em>f(E)</em> have been calculated for various values of the parameter <em>CD</em><span><math><mtext>1</mtext><mtext>2</mtext></math></span>/<em>n</em><span><math><mtext>1</mtext><mtext>2</mtext></math></span><em>v</em><span><math><mtext>1</mtext><mtext>2</mtext></math></span>νXXX<sub>m</sub>, the results obtained enable the variation of the current and the potential peak to be calculated as a function of the concentration or the rate of scanning.</p><p>The theory propounded explains the principal characteristics of the oscillopolarograms obtained when chlorides react anodically on the mercury electrode.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 516-523"},"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)80129-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134482","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: 9
On the polarographic maxima of the 1st kind observed in the formation of insoluble surface-active products of the electrode reaction 第一类极谱极值在电极反应的不溶性表面活性产物的形成中观察到
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 DOI: 10.1016/0022-0728(66)80134-1
S.G. Mairanovskii
{"title":"On the polarographic maxima of the 1st kind observed in the formation of insoluble surface-active products of the electrode reaction","authors":"S.G. Mairanovskii","doi":"10.1016/0022-0728(66)80134-1","DOIUrl":"10.1016/0022-0728(66)80134-1","url":null,"abstract":"","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 547-552"},"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)80134-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134766","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
Electroanalytical study of the cobalt(II) pyridine—cobalt amalgam system, with application to stripping analysis 钴(II)吡啶-钴汞合金体系的电分析研究及其在汽提分析中的应用
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 DOI: 10.1016/0022-0728(66)80119-5
B.K. Hovsepian, Irving Shain
{"title":"Electroanalytical study of the cobalt(II) pyridine—cobalt amalgam system, with application to stripping analysis","authors":"B.K. Hovsepian,&nbsp;Irving Shain","doi":"10.1016/0022-0728(66)80119-5","DOIUrl":"10.1016/0022-0728(66)80119-5","url":null,"abstract":"<div><p>The electroreduction of cobalt (II) from solutions containing pyridine was investigated with stationary electrode polarography at a hanging mercury drop electrode using both single-scan and cyclic experiments. Scan rates ranged from 50 <span><math><mtext>mV</mtext><mtext>sec</mtext></math></span> to 110 <span><math><mtext>V</mtext><mtext>sec</mtext></math></span>, and from the variation of the peak potential and the peak current function, <em>i</em><sub>p</sub>/<em>V</em><sup>v</sup>, (where <em>i</em><sub>p</sub> is the peak current, and <em>v</em> the rate of voltage scan) with scan rate, the reduction appeared to involve a reversible charge transfer followed by an extremely rapid chemical reaction in the amalgam to form a species not electroactive in the same potential range. This product appears to be a dimer or higher cobalt aggregate dissolved in the mercury. It is reoxidized at a potential about 1 V anodic of the reduction wave. This irreversible anodic wave was made the basis of a stripping analysis procedure for the determination of trace quantities of cobalt.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 397-410"},"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)80119-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53133511","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: 21
Electrochemical cells as electrical circuit elements 作为电路元件的电化学电池
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 DOI: 10.1016/0022-0728(66)80120-1
B. Breyer, H.H. Bauer
{"title":"Electrochemical cells as electrical circuit elements","authors":"B. Breyer,&nbsp;H.H. Bauer","doi":"10.1016/0022-0728(66)80120-1","DOIUrl":"10.1016/0022-0728(66)80120-1","url":null,"abstract":"","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 411-415"},"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)80120-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53133562","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: 3
Polarographie de l'ion chlorite 亚氯酸盐离子极谱法
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 DOI: 10.1016/0022-0728(66)80125-0
L. Gierst, L. Vandenberghen , E.T. E. Nicolas
{"title":"Polarographie de l'ion chlorite","authors":"L. Gierst,&nbsp;L. Vandenberghen ,&nbsp;E.T. E. Nicolas","doi":"10.1016/0022-0728(66)80125-0","DOIUrl":"10.1016/0022-0728(66)80125-0","url":null,"abstract":"<div><p>It is known that the polarographic behaviour of the chlorite ion in alkaline media is characterized by a kinetic pre-wave, followed by a dip, which has been assumed to reflect a <em>desorption</em> process.</p><p>The present work shows that this pre-wave is related to traces of ferrate ions, which are almost always present in unpurified hydroxide solutions.</p><p>At potentials of the order of −1.0 V/S.C.E., ferrite ions are produced; these are catalytically reoxidised by the chlorite ions. The dip is explained by the direct reduction to metallic iron. The kinetic characteristics of the reactions: Fe(+III) + <em>e</em> ⇌ Fe(+II) Fe(+II) + 2<em>e</em> ⇌ Fe(O) and 4Fe(+II) + Cl(+IV) → 4 Fe(III) + Cl(−I) have been elucidated, taking into account the effects of concentration, cation composition and pH.</p><p>The rate-determining step FeO<sub>2</sub>H<sup>−</sup> + ClO<sub>2</sub><sup>−</sup> → proceeds with a rate constant of the order of 1.7·10<sup>8</sup><em>M</em><sup>−1</sup> 1 sec<sup>−1</sup>.</p><p>The main wave, which follows the dip, corresponds to the direct irreversible discharge of ClO<sub>2</sub><sup>−</sup>, the rate constant of which satisfactorily obeys the Frumkin theory, with α<em>n</em><sub>α</sub> ⋍ 0.37.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 462-476"},"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)80125-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134303","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: 11
Über den einfluss der temperatur auf einige elektroden-prozesse, die durch stark adsorbierbare oberflächenaktive stoffe gehemmt werden 温度对受强表面适应性物质阻碍的几个电极过程的影响
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 DOI: 10.1016/0022-0728(66)80132-8
J. Küta, I. Smoler
{"title":"Über den einfluss der temperatur auf einige elektroden-prozesse, die durch stark adsorbierbare oberflächenaktive stoffe gehemmt werden","authors":"J. Küta,&nbsp;I. Smoler","doi":"10.1016/0022-0728(66)80132-8","DOIUrl":"10.1016/0022-0728(66)80132-8","url":null,"abstract":"<div><p>The influence of temperature on inhibited electrode reactions of some cations in acidic solutions was studied. As inhibitors, tribenzylamine, tetrabutylammonium-sulphate and Triton X-45 were used. From the analysis of <em>i-t</em> curves it can be concluded that the time <em>v</em>, necessary for the complete coverage of the electrode, decreases with rising temperature. The diminution of <em>v</em> -values is due to the increased diffusion of surface-active substance towards the electrode. The rate constant of the electrode reaction on the covered surface, <sub>1</sub><em>K</em><sub>e</sub>, is either temperature-independent or increases with rising temperature, according to the character of the electrode reaction and the applied potential. In the latter case the temperature dependence of <sub>1</sub>k<sub>e</sub> fullfils the Arrhenius equation. So far as <sub>1</sub><em>K</em><sub>e</sub> does not increase appreciably with temperature the inhibited polarographic wave is practically temperature-independent.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 535-543"},"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)80132-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53134648","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: 3
Automatic and coulometric titrations in studies of chemical kinetics 化学动力学研究中的自动和库仑滴定
Journal of Electroanalytical Chemistry (1959) Pub Date : 1966-11-01 DOI: 10.1016/0022-0728(66)80116-X
Peter W. Carr , Louis Meites
{"title":"Automatic and coulometric titrations in studies of chemical kinetics","authors":"Peter W. Carr ,&nbsp;Louis Meites","doi":"10.1016/0022-0728(66)80116-X","DOIUrl":"10.1016/0022-0728(66)80116-X","url":null,"abstract":"<div><p>The rate constants for the disproportionations of uranium(V) in perchlorate solutions having hydrogen-ion concentrations between 0.01 and 1.9 <em>M</em> have been evaluated by adding a solution of chromium(II) at a constant rate to one of uranium (VI), employing a vibrating dropping mercury electrode to follow the variation of the concentration of either uranium(VI) or uranium(V). The resulting values are in acceptable agreement with those obtained by other techniques.</p></div>","PeriodicalId":100778,"journal":{"name":"Journal of Electroanalytical Chemistry (1959)","volume":"12 5","pages":"Pages 373-384"},"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)80116-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53133402","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: 11
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