Electrochemical detection in liquid flow analytical techniques:
Characterization and classification (IUPAC Technical Report)
K. Tóth, K. Stulík, W. Kutner, Z. Fehér, and E.
Abstract: Liquid flow analytical techniques are classified,
and definitions are provided of flow-injection analysis, segmented flow
analysis, flow titration, continuous monitoring, liquid chromatography,
and capillary electrophoresis. Electrochemical detection and flow through
detection cells are characterized with respect to the surface and bulk
detection. The detector performance is discussed in terms of its principal
analytical parameters, such as detection limit and dynamic concentration
range, as well as its dynamic characteristics, such as the response
time, sampling frequency, transport lag, and long-term stability. Moreover,
different detection modes are critically evaluated, including both potentiostatic
and galvano-static techniques. Factors influencing sensitivity and detection
limit, which include electronic and hydrodynamic approach, are also
discussed. Different detector designs are critically reviewed, and the
special features of electrochemical detectors for flow analytical techniques
* Corresponding author.
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