INPUT CONTROL OF SENSOR PARAMETERS AND REPRODUCIBILITY OF SENSOR MEASUREMENT

Lukas Fujcik, Radimir Vrba, Jan Krejci, Michal Skocdopole, Ondrej Sajdl, Jiri Haze

Abstract

Fast detection of pesticide toxicity in the field conditions is very important in many aspects (longtime influence of low concentrations on man´s health, pesticide storage, price of one test etc.). The pesticide concentration measurements are performed on a biosensor with acetylcholinesterase (AChE). The AChE is a very sensitive compound. The measurement uses principle of an artificial synapse (AS) and inhibition of an enzyme Acetylcholinesterase (AChE). The AS is a very effective detector of the pesticide toxicity. Therefore properties of the sensor have to be measured without AChE at first. This process is called input control of the sensor. The reproducibility of electrochemical detector is studied first using hydrogen peroxide and second ferri-ferrokyanide redox couple. The parameters of electrochemical detector itself were evaluated statistically.

Keywords

hydrogen peroxide, acetylcholinesterase

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PWC-2003-TC19-013.pdf

DOI

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IMEKO TC

TC19 - Environmental Measurements

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