Electrochemical simultaneous sensor based on CaZrO(3)@attapulgite hybrid nanocomposite for environmental monitoring of metronidazole and nitenpyram pestanal.

A CaZrO3@attapulgite hybrid nanocomposite sensor achieves ultra-sensitive, selective, and simultaneous detection of metronidazole and nitenpyram with detection limits below 0.07 μM.

• Why it matters: Monitoring antibiotics and pesticides in environmental and biological samples is crucial for public health and ecological safety, yet current methods lack simplicity, cost-effectiveness, and portability.
• What they did: Researchers synthesized a nanocomposite via hydrothermal and sonochemical methods, modifying a glassy carbon electrode with CaZrO3 nanoparticles on attapulgite, and used differential pulse voltammetry to evaluate its performance across various samples.
• The result: The sensor demonstrated high sensitivity, reproducibility, and stability, with recovery rates near 97-101%, enabling reliable, on-site environmental and biofluid analysis, and bridging gaps in health surveillance and food safety.