Instrumentation for charging current compensation in d.c. polarography

Poojary, Aithu ; Rajagopalan, S. R. (1975) Instrumentation for charging current compensation in d.c. polarography Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 62 (1). pp. 51-58. ISSN 0022-0728

Full text not available from this repository.

Official URL: http://linkinghub.elsevier.com/retrieve/pii/002207...

Related URL: http://dx.doi.org/10.1016/0022-0728(75)80027-1

Abstract

It is shown that the non-linear charging current in d.c. polarography can be fairly well compensated by a method (suggested by Barker), which consists in applying a small a.c. voltage to the polarographic cell, rectifying the a.c. response, integrating it and subtracting a suitable fraction from the total d.c. response. An instrument incorporating such an automatic compensation for the nonlinear charging current is described. Results obtained with this instrument are presented to show that the limit of measureable concentrations is about 10-7 M for reversible waves and the precision is ±2.5 to ±3.0%. It is possible to obtain, with the instrument described here, well defined polarograms even when the supporting electrolyte concentration is low.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:38382
Deposited On:29 Jun 2011 11:59
Last Modified:29 Jun 2011 11:59

Repository Staff Only: item control page