Electrochemical
Electrochemical-based biosensor has been used to determine the
concentration of various analytes in the testing samples. Electrochemical sensor is a
normally based on enzymatic catalysis of a reaction that produces or consumes
electrons. The sensor substrate usually contains three electrodes, a reference electrode,
an active electrode and a sink electron. The sensor measure the change in current
produced from oxidation and reduction reactions. This current produced is correlated
to either the concentration of the electro-active species present [15]. Several
electrochemical techniques can be applied for analytical purpose, including
potentiometric, amperometric, and conductimetric. The system of amperometric
detection has been demonstrated to be the most suitable means for immunosensor
construction due to their high sensitivity, low cost and possibility of instrument
miniaturization [21]. Electrochemical sensors are frequently used in medical and
Electrochemical
Electrochemical-based biosensor has been used to determine the
concentration of various analytes in the testing samples. Electrochemical sensor is a
normally based on enzymatic catalysis of a reaction that produces or consumes
electrons. The sensor substrate usually contains three electrodes, a reference electrode,
an active electrode and a sink electron. The sensor measure the change in current
produced from oxidation and reduction reactions. This current produced is correlated
to either the concentration of the electro-active species present [15]. Several
electrochemical techniques can be applied for analytical purpose, including
potentiometric, amperometric, and conductimetric. The system of amperometric
detection has been demonstrated to be the most suitable means for immunosensor
construction due to their high sensitivity, low cost and possibility of instrument
miniaturization [21]. Electrochemical sensors are frequently used in medical and
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