Application of the Cathode-Ray Oscilloscope to Polarographic Phenomena. I. Differential Capacity of the Electrical Double Layer.

Loveland, J. W.; Elving, Philip J.

doi:10.1021/j150494a023

Cited by 32 publications

(22 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Multilayer formation has been previously postulated by several workers (6,8,9,20,21), as evidenced, for example, in the case of a saturated solution of n-octanoic acid, by means of surface tension measurements by Frumkin et al. (Q), and for n-octyl alcohol at concentrations above half-saturation, by means of double layer capacity measurements by Melik-Gaikazyan (11).…”

Section: Layer Capacitymentioning

confidence: 77%

Electroanalytical Chemistry of Surface Monolayers

Laitinen¹

1961

Anal. Chem.

View full text Add to dashboard Cite

b Three electrochemical approaches to the analysis of a surface for foreign materials in monolayer or lesser quantities are described. The first approach, coulometry, has proved to b e useful in determining the extent of oxidation of the surfaces of platinum and gold, and in cotrelating the fraction of monolayer oxidation with the differential double layer capacity. The second approach, differential double layer capacity measurements, is the most general, because it responds to all substances which change the dielectric properties of the metalsolution interface, and because it does not require an electrode reaction. It is limited to regions of potential relatively far removed from oxidationreduction or adsorption-desorption potentials. The third approach, chronopotentiometry, is limited to substances undergoing reduction or oxidation without kinetic complications. By a suitable extrapolation technique, reaction of the adsorbed phase is distinguished from that of the diffusing species.LLUSTRATIVE of the expanding scope

show abstract

Section: Layer Capacitymentioning

confidence: 77%

Electroanalytical Chemistry of Surface Monolayers

Laitinen¹

1961

Anal. Chem.

View full text Add to dashboard Cite

show abstract

“…Saturated solutions of n-heptyl and w-octyl alcohols in 1 N potassium halide gave rise to four capacity peaks on both the charging and discharging branches of the differential capacity current oscillograms. 3 The potentials at which these peaks appeared were designated as Fi, Vs, Vs and F4, where Vi was the most positive and F4 the most negative of the four capacity peaks. The saturated solutions of n-hexyl alcohol were characterized by either two or three capacity peaks (F2, V3 and F4) while the saturated solutions of namyl alcohol showed exclusively two peaks (Vs and V3) on both the charging and discharging traces.…”

Section: Peak Capacitiesmentioning

confidence: 99%

“…amyl alcohol over that for the octyl alcohol. (3) The formation of double film layers is more prevalent with n-octyl alcohol solutions than with n-amyl alcohol solutions. Whenever capacities are added in series, the effective capacity decreases.…”

Section: Minimum Capacitiesmentioning

confidence: 99%

“…values involved,3 and of the magnitudes of the capacities observed. 4 The present study deals with the determination of the influence of such factors as voltage sweep frequency, and concentration and structure of alcohols on the capacities, potentials and S.C.D. relationships involved in film formation.…”

Section: Polarographic Maxima Relationshipmentioning

confidence: 99%

“…These methods were applied to the study of adsorption-desorption phenomena of various alcohols at mercury-saline solution interfaces with special emphasis on the potentials of the adsorption-desorption capacity peaks and on the surface charge density relationships involved. 3 The present study is concerned with the magnitude of the peak and minimum capacities encountered during film formation by alcohols at mercury-saline solution interfaces as observed from oscillographic capacity patterns.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Application of the Cathode-Ray Oscilloscope to Polarographic Phenomena. IV. Peak and Minimum Capacities of Adsorption–Desorption Processes Exhibited by Alcohols at Aqueous Saline Solution–Mercury Interfaces

Lovel¹,

Elving²

1952

J. Phys. Chem.

Self Cite

View full text Add to dashboard Cite

Stand der polarographischen Methoden und ihrer Instrumentation. Teil I: Gleichspannungsverfahren

Nürnberg

Wolff

1965

Chemie Ingenieur Technik

View full text Add to dashboard Cite

G e g r U n d e t 1 9 2 8 u n t e r d e m T i t e l . D i e c h e m i s c h e F a b r l k ' Z e i t s c h r i f t f u r t e c h n f s c h e C h e m i e , V e r f a h r e n s t e c h n i k u n d A p p a r a t e w e s e n Stand der polarographischen Methoden und ihrer Instrumentation Polarographische Methoden zeichnen sich generell durch ihre hohe Nachweisempfind-*) Teil I1 iiber Wechselspannungsverfahren demnachst in dieser Ztschr. l) ppm = part per million. Die Angaben beziehen sich auf die Probelosung.Chernie-1ng.-Techn. 37. Jahrg. 1965 / N r . I0 G, Wegen einer verbesserten Form zur exakten Berucksichtigung der spharischen Diffusion vgl. [3], 978 Chemie-lng:.Techn. 37. Jahrg. 1965 I Nr. I0 hbb. 3. Schaltbild der Einrichtung zur Kapazitatsstromkompensation nach llkovif-Sernerano. RA, RE( Widerstande (ubrige Zeichen wie in Abb. 1).hangigkeit von C , vom Potential 151. Insgesamt hat also die Potentialabhangigkeit von i, n i c h t -1 i n e ar e n Charakter. In 0,l m Leitsalz-Losungen kann CL) bei Potentialen zwischen -0,5 und -1,6 V gegen NKE (Normal-Kalomel-Elektrode) in erster Naherung als wenig veranderlich angesehen werden8'.Zur Kompensation des Kapazitatsstroms dient eine Anordnung nach Ilkovi&Semerano') (Abb. 3), die mit 8 ) Mit einem charakteristischen Wert fur CI, von 16 bis 20 p F ' cm3 ergibt sich bei normaler TropfengroDe ein Kapazitatsstrom von ca. 10-7 Amp. Ein zweiwertiger Depolarisator in 10--" m Losung ergibt einen Strom in der gleichen Gro5enordnung, so da5 hier eine natiirliche Grenze der Empfindlichkeit einfacher dc-Verfahren liegt.

show abstract

Application of the Cathode-Ray Oscilloscope to Polarographic Phenomena. I. Differential Capacity of the Electrical Double Layer.

Cited by 32 publications

References 0 publications

Electroanalytical Chemistry of Surface Monolayers

Electroanalytical Chemistry of Surface Monolayers

Application of the Cathode-Ray Oscilloscope to Polarographic Phenomena. IV. Peak and Minimum Capacities of Adsorption–Desorption Processes Exhibited by Alcohols at Aqueous Saline Solution–Mercury Interfaces

Stand der polarographischen Methoden und ihrer Instrumentation. Teil I: Gleichspannungsverfahren

Contact Info

Product

Resources

About