Monitoring of trace oxytetracycline using a porphyrin-MOF layer-based electrochemical aptasensor.

A two-dimensional porphyrin-MOF nanolayer was developed to construct an electrochemical aptasensor for monitoring oxytetracycline from 0.01 pg mL−1 to 0.1 ng mL−1. This aptasensor exhibited high sensitivity, outstanding selectivity, good stability, fine reproducibility, and quantitative detection ability in real samples. [ABSTRACT FROM AUTHOR]