Smart Paper-Based Nanosensor for Simultaneous Environmental eMonitoring of Nitrate and Nitrite.

ABSTRACT: Nitrate (NO₃ ^-) and nitrite (NO₂ ^-) contamination, primarily from agricultural fertilizers, food additives, and industrial effluents, poses a significant threat to the environment and public health. While current detection methods are sensitive, they often rely on complex instrumentation, trained personnel, and time-consuming procedures, limiting their applicability in field settings. To overcome these limitations, we developed a portable, IoT-integrated, paper-based fluorescent sensor that meets all WHO's REASSURED criteria for ideal sensing devices. The sensor employs phenylene-diamine-derived carbon quantum dots (CQDs) as fluorescent probes with NO₂ ^- inducing fluorescence quenching via nitrosylation and diazotization. Fo

SUBMITTER: Oroujlo M 

PROVIDER: S-EPMC12715739 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature