Electrochemical potentiometric

What are the essential parts of an electrochemical potentiometric cell and what is the main operational characteristic of a potentiometric measurement ... 

Electrode modification by the attachment of various types of biocomponents holds considerable promise as a novel approach for electrochemical (potentiometric, conductometric, and amperometric) biosensors. Potentiometric sensors based on coupled biochemical processes have already demonstrated considerable analytical success [26,27]. More recently, amperometric biosensors have received increasing attention [27,28] partially as a result of advances made in the chemical modification of electrode surfaces. Systems based on... 

Electrochemical, potentiometric Legin (Russia) Determination of heavy metals with an array of chalcogenide membrane sensors. [15]... 

The sensitivity of the detection is usually improved by the silver enhancement method. A better detection limit was reported when a silver enhancement method was employed, based on the precipitation of silver on AuNPs tags and its dissolution (in HNO3) and subsequent electrochemical potentiometric stripping detection [43]. The new silver-enhanced colloidal gold stripping detection strategy represented an attractive alternative to indirect optical affinity assays of nucleic acids and other biomolecules. 

Solid-State Electrochemical Potentiometric Sensors for Gas Analysis. . . 1105 H. -H. Mdbius... 

Solid-State Electrochemical Potentiometric Sensors for Gas Analysis... 

Mdbius HH (1991) Solid state electrochemical potentiometric sensors for gas analysis, hi Gopel W, Hesse J, Zemel JN (eds) Sensors a comprehensive survey. VCH, New YorkAVeinheim... 

However, colorimetric sensors have at least one disadvantage with respect to other analytical methods (electrochemical, potentiometric, etc.), namely, they are generally characterized by low sensitivity. However, lower limits of detection can be obtained using fluorescent- or luminescent-based approaches. Therefore, in an effort to improve the sensitivity of an optode, fluorophores are often coupled to the substrate binding subunit. Using this strategy, it is often possible to obtain sensors that produce both colorimetric and luminescent responses that allow analyte detection via instrumental analysis, as well as in certain cases via the naked eye. Currently, the number of colorimetric sensors for lanthanide ions is still limited. Reviewed below, is recent progress in this area. 

E-tongues can be found in different versions according to the detectors employed electrochemical (potentiometric, voltammetric, amperometric, impedimetric, or conduc-timetric), optical, mass and enzymatic sensors (biosensors). One example is a taste sensor made by potentiometric electrodes coated with a lipid layer, another one is a taste analyzer made by ChemFET. 

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