From environmental residues to dietary exposure: branch-assembled ZIF-8 on interconnected carbon nanofiber networks for carbendazim monitoring.

Abstract

The detrimental benzimidazole fungicide Carbendazim (CBZ) is an ongoing risk to human health and ecosystems because of its endocrine-disturbing properties, and frightening bioaccumulation in food chains, especially in poultry like chicken. We designed the Zeolitic imidazolate framework-8 incorporated with the Carbon Nanofiber (ZIF-8@CNF) as electrochemical sensor material, thereby combines surface chemistry optimization in a synergistic manner to mitigate these risks. At 0.1 M PBS (pH 2.0), the sensor's wide linear response 0.199-772.18 μM yields an outstanding detection limit 0.38 nM. Maximum sensitivity 0.4151 μA μM-1cm-2 was made possible by pH 2.0 adjustment, while in-depth mechanistic investigations demonstrated the composite's distinctive diffusion-controlled. The platform was able to overcome complicated matrix interferences and detect CBZ residues in eight difficult matrices, including environmental samples, fruits, vegetables, and chicken tissue. This study creates a fresh standard for tracking persistent pesticide residues in applications related to food safety and agriculture.