In ac
polarography, differential pulse
polarography, derivative
polarography, square-wave
polarography, and similar techniques, the maximum value of the component of the current that is
associated with the presence of a substance B. Normally this component of the current
is faradaic, and the maximum arises because the rate of variation (with
applied potential ) of the rate of the charge-transfer process passes through a maximum. Similar maxima
arise when this component is non-faradaic (and when B is surface-active rather than
electroactive). In a case known to be of the latter type, the term
apex current is recommended as being more specific.
Source:
PAC, 1985, 57, 1491
(Recommended terms, symbols, and definitions for electroanalytical chemistry (Recommendations
1985))
on page 1499
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
