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A Simulation of an Initial Stage of a Pseudopolarographic Experiment on a Thin Mercury Film Covered Rotating Disk Electrode
Author(s) -
Lovrić Milivoj
Publication year - 1998
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/(sici)1521-4109(199810)10:15<1022::aid-elan1022>3.0.co;2-4
Subject(s) - mercury (programming language) , electrode , stage (stratigraphy) , materials science , thin film , environmental science , computer science , chemistry , nanotechnology , geology , programming language , paleontology
A general theory of pseudopolarography using the thin mercury film covered rotating disk electrode is developed. Half‐wave potentials of pseudopolarograms of the reversible and totally irreversible redox reactions are: E 1/2 = E ° + ( RT/nF ) ln(1.594 l δ ss / DT ) and E 1/2 = E ° + ( RT /α nF ) ln( k s δ ss / D ), respectively, if the accumulation of amalgam is longer than two minutes. Under the influence of the development of the diffusion layer in the first phase of the accumulation period, the limiting values of dimensionless pseudopolarograms increase with decreasing accumulation time. The consequences of this process on the half‐wave potentials are discussed.