Ratiometric electrochemical sensor for accurate detection of salicylic acid in leaves of living plants.

ABSTRACT: Detection of signal molecules in living plants is of great relevance for precision farming. In this work, to establish a more effective method for monitoring salicylic acid (SA) in the leaves of living plants, a ratiometric electrochemical sensor was fabricated based on a Cu metal-organic framework (Cu-MOF) and carbon black (CB) composite. The Cu-MOF and CB composite was used to catalyze SA oxidation. Ratiometric oxidation current peak intensities I _SA/I _Cu-MOFs were used as the response signal for SA. I _SA/I _Cu-MOFs linearly enhanced with the increase of SA concentration, together with low limits of detection (12.50 μM). Moreover, our sensor is fabricated on a screen-printed electrode (SPE), which is especially suitab

SUBMITTER: Yang L 

PROVIDER: S-EPMC9057353 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature