Sensing plastics with electrode sensor to monitor fluid environments

Abstract

The invention relates to a novel sensor system and method for detecting microplastics and nanoplastics in fluid environments with high sensitivity and specificity. The system comprises a screen-printed carbon electrode coated with a molecularly imprinted polymer layer, designed to selectively bind target plastics. An electrochemical control unit, such as a potentiostat, transmits currents to the electrode, inducing a measurable electrochemical response. The MIP layer features cavities tailored to the shape and size of specific plastics, enhancing selectivity. The sensor detects plastics across a wide concentration range and particle sizes, utilizing techniques like cyclic voltammetry and differential pulse voltammetry. The system supports wireless data acquisition and is adaptable for use in real-time monitoring in various environments. The sensor system can be configured to support multiple sensors in order to quantify concentrations of different plastic types and sizes.