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Amperometric operation of porous flow‐through electrodes at very low conversion efficiencies in flow stream detectors
Author(s) -
Zhu Caobin,
Curran David J.
Publication year - 1991
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/elan.1140030611
Subject(s) - amperometry , electrode , limiting current , current (fluid) , limiting , detector , materials science , flow (mathematics) , porosity , radius , analytical chemistry (journal) , chromatography , chemistry , mechanics , electrochemistry , composite material , optics , thermodynamics , physics , computer science , mechanical engineering , computer security , engineering
Abstract The limiting current equation for a porous flow‐through electrode operated amperometrically at low conversion efficiencies can be expressed in the same general format as that for amperometric detectors of other types. The equation shows that a critical dimension for the porous electrode is the pore diameter, the limiting current being inversely proportional to the two‐thirds, power of the pore radius. Experimental verification was obtained using reticulated vitreous carbon (RVC) electrodes.