Page 40 - Analytical Electrochemistry 2d Ed - Jospeh Wang

SUPPLEMENTARY READING 25

mercury surface, occurring at positive potentials, causes deviations from parabolic
behavior (with shifts of E pzc to more cathodic potentials). As shown in Figure 1-15,
the change in the surface tension, and the negative shift in the E pzc , increase in the

order: I > Br > CNS > NO > OH . (These changes are expected from the

3
strength of the speci®c adsorption.) Such ions can be speci®cally adsorbed because
they are not solvated. Inorganic cations, in contrast, are less speci®cally adsorbed
(because they are usually hydrated). Similarly, blockage of the surface by a neutral
adsorbate often causes depressions in the surface tension in the vicinity of E
pzc
(Figure 1-16). Note the reduced dependence of g on the potential around this
potential. At more positive or negative potentials, such adsorbates are displaced from
the surface by oriented water molecules. The electrocapillary approach is not
suitable for measuring the E of solid (i.e., rigid) electrodes.
pzc
SUPPLEMENTARY READING
Several international journals bring together papers and reviews covering innova-
tions and trends in the ®eld of electroanalytical chemistry:
Bioelectrochemistry and Bioenergetics
Biosensors and Bioelectronics
Electroanalysis
Electrochimica Acta
Journal of Applied Electrochemistry
Journal of Electroanalytical and Interfacial Electrochemistry
Journal of the Electrochemical Society
Langmuir
Sensors and Actuators

Useful information can be found in many prominent journals that cater to all
branches of analytical chemistry including The Analyst, Analytica Chimica Acta,
Analytical Chemistry, Talanta, Analytical Letters, and Fresenius Zeitschrift fuÈr
Analytical Chemie. Biennial reviews published in the June issue of Analytical
Chemistry offer comprehensive summaries of fundamental and practical research
work.
Many textbooks and reference works dealing with various aspects of electro-
analytical chemistry have been published in recent decades. Some of these are given
below as suggestions for additional reading, in alphabetic order:

W.J. Albery, Electrode Kinetics, Clarendon Press, Oxford, 1975.
A.J. Bard and L. Faulkner, Electrochemical Methods, Wiley, New York, 1980.
J.M. Bockris and A. Reddy, Modern Electrochemistry, Vol. 1,2, Plenum Press, New York, 1970.
A.M. Bond, Modern Polarographic Methods in Analytical Chemistry, Dekker, New York,
1980.