An effective and sensitive environmental pollutant sensor for pymetrozine

Abstract

Abstract Pymetrozine plays an important role in agriculture safety supervision. Accurate and rapid detection of pymetrozine in real sample is count for much as this is the significant prerequisite for its effective monitoring. An effective and sensitive voltammetric sensor, based on single-walled carbon nanotubes (SWCNT) composite poly(L-arginine) film modified glassy carbon electrode, was fabricated, and used for determination of pesticide pymetrozine. Results suggests that the poly(L-arginine)/SWCNT modified electrode exhibited a very low limit of detection. In addition, selectivity, long-term stability, and practical applicability of the developed sensor were evaluated. Hence, the developed poly(L-arginine)/SWCNT/GCE displayed excellent electrochemistry behavior towards the sensing of pymetrozine with good sensitivity, selectivity, and reproducibility. The detection technique successfully achieved the determination of pymetrozine in the concentration range 0.05μM ∼1.0μM with the detection limits of 17 nM (S/N=3).