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Conductimetric and potentiometric detection in conventional and microchip capillary electrophoresis
Author(s) -
Tanyanyiwa Jatisai,
Leuthardt Sandro,
Hauser Peter C.
Publication year - 2002
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/1522-2683(200211)23:21<3659::aid-elps3659>3.0.co;2-m
Subject(s) - potentiometric titration , capillary electrophoresis , amperometry , analyte , conductometry , chemistry , chromatography , electroanalytical method , capillary action , potentiometric sensor , electrochemistry , electrode , analytical chemistry (journal) , materials science , composite material
Potentiometric detection is rarely used in separation methods but is promising for certain classes of analytes which can only with difficulty be quantified by more standard methods. Conductimetric detection of ions is very versatile and has recently received renewed interest spurned by the introduction of the capacitively coupled contactless configuration. Both are useful and complementary alternatives to the established optical detection methods, and to the more widely known electrochemical method of amperometry. The simplicity of the electrochemical methods makes them particularly attractive for microfabricated devices, but relatively little work has to date been carried out with regard to potentiometric and conductimetric detection.