Disposable electrochemical sensors and biosensors for environmental and food analysis

Abstract

Disposable electrochemical sensors and biosensors applied to the environmental and food analysis are presented. For this purpose screen-printed electrochemical transducers, produced by thick-film technology, have been modified in order to get the specificity of the devices for their target. The sensors are coupled with fast and sensitive electroanalytical techniques

such as differential pulse voltammetry (DPV), square wave voltammetry (SWV), chronopotentiometry at constant current, or chronoamperometry to obtain accurate results in a few minutes. Applications to heavy metal, DNA damage and polychlorinated biphenyls (PCB) detection have been reported.