Abiotic sensor for electrochemical determination of chlorpyrifos in natural water based on the inhibition of silver nanoparticles oxidation

•Synthesis of silver nanoparticles based on natural reducing and capping agents.•Glassy carbon modification by silver nanoparticles through sticking technique.•Optimization of silver nanoparticles oxidation at electrode surface.•Chlorpyrifos effect on silver nanoparticles oxidation.•Chlorpyrifos determination in natural water.