Biosensors in environmental monitoring
A biosensor (biological sensor) works fundamentally by detecting the presence of chemicals. It uses a living organism or biological molecules (e.g., enzymes, antibodies) to bind variables of interest and a transducer to generate an electrical signal proportional to the resulting change in analyte concentration. In other words, it is a device that converts biological processes into a detectable electrical signal. A typical biosensor is shown in Figure 1, which consists of the following components:
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