PORTABLE ELECTROCHEMICAL SENSORS FOR THE DETECTION OF PMT CHEMICALS IN REAL SAMPLES

Abstract

Persistent, mobile, and toxic (PMT) chemicals pose a significant risk to water resources due to their resistance to biodegradation, ability to spread over long distances, and harmful effects on human health and the environment. Among the most widely detected PMT chemicals are bisphenols, benzisothiazolinone (BIT), and benzotriazole (BZT), which originate from common consumer and industrial products. Monitoring these chemicals is essential for assessing their impact and developing strategies for their reduction. Traditional detection methods like chromatography are effective but costly and time-consuming. Electrochemical sensors offer a promising alternative due to their affordability, portability, and high sensitivity. This study used carbon-based screen-printed electrodes (SPEs) to detect BPS and BIT, while SPEs modified with Vulcan carbon and polymer coatings were employed for BZT detection. Real samples, including parking ticket paper and river water, were analyzed to demonstrate the sensors' practical application. The findings highlight the potential of electrochemical sensors as efficient tools for on-site monitoring of PMT chmicals, contributing to improved environmental assessment and regulatory efforts.