Artículo
Abstract:
Two microelectrodes inserted at different closely spaced heights in the channel of a conventional moving boundary apparatus, are externally connected through a current-sensitive device and a condenser. At the moment of the boundary passage, the abrupt change in the ohmic drop between the two electrode sites causes a readjustment of the charges on the capacities of the electrode circuit involving a small transient current peak of a few hundredths of a microampere. This provides a sensitive signal for the timing of the boundary. The boundary velocity may be determined using pairs of microelectrodes conveniently placed along the channel. The method has been tested by calibration of the volume between two such electrode pairs. The standard deviation in a series of eleven measurements was 0.2%. The technique can be used at high dilutions. Although it has been tested only in aqueous solution it should be adequate for measurements in non-aqueous solvents. © 1967.
Registro:
| Documento: | Artículo |
| Título: | Open circuit electrical detection method for transport number measurements in dilute solutions by the moving boundary technique |
| Autor: | Passeron, E.; Gonzalez, E. |
| Filiación: | Electrochemical Laboratory, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina |
| Año: | 1967 |
| Volumen: | 14 |
| Número: | 4 |
| Página de inicio: | 393 |
| Página de fin: | 398 |
| DOI: | http://dx.doi.org/10.1016/0022-0728(67)80020-2 |
| Título revista: | Journal of Electroanalytical Chemistry |
| Título revista abreviado: | J Electroanal Chem |
| ISSN: | 00220728 |
| CODEN: | JECHE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220728_v14_n4_p393_Passeron |
Citas:
---------- APA ----------
Passeron, E. & Gonzalez, E. (1967) . Open circuit electrical detection method for transport number measurements in dilute solutions by the moving boundary technique. Journal of Electroanalytical Chemistry, 14(4), 393-398.http://dx.doi.org/10.1016/0022-0728(67)80020-2
---------- CHICAGO ----------
Passeron, E., Gonzalez, E. "Open circuit electrical detection method for transport number measurements in dilute solutions by the moving boundary technique" . Journal of Electroanalytical Chemistry 14, no. 4 (1967) : 393-398.http://dx.doi.org/10.1016/0022-0728(67)80020-2
---------- MLA ----------
Passeron, E., Gonzalez, E. "Open circuit electrical detection method for transport number measurements in dilute solutions by the moving boundary technique" . Journal of Electroanalytical Chemistry, vol. 14, no. 4, 1967, pp. 393-398.http://dx.doi.org/10.1016/0022-0728(67)80020-2
---------- VANCOUVER ----------
Passeron, E., Gonzalez, E. Open circuit electrical detection method for transport number measurements in dilute solutions by the moving boundary technique. J Electroanal Chem. 1967;14(4):393-398.http://dx.doi.org/10.1016/0022-0728(67)80020-2
