Monitoring Cd²⁺ in oily wastewater using an aptamer-graphene field-effect transistor with a selective wetting surface.

ABSTRACT: The discharge of oily industrial wastewater containing heavy metal ions with the development of industry severely threatens the environment and human health. Therefore, it is of great significance to monitor the concentration of heavy metal ions in oily wastewater quickly and effectively. Here, an integrated Cd²⁺ monitoring system consisting of an aptamer-graphene field-effect transistor (A-GFET), oleophobic/hydrophilic surface and monitoring-alarm circuits was presented for monitoring the Cd²⁺ concentration in oily wastewater. In the system, oil and other impurities in wastewater are isolated by an oleophobic/hydrophilic membrane before detection. The concentration of Cd²⁺ is then detected by a graphene field-effect transistor with a Cd²⁺ aptame

SUBMITTER: Wang H 

PROVIDER: S-EPMC9972544 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature