Electrochemical nonenzymatic sensor based on CoO decorated reduced graphene oxide for the simultaneous determination of carbofuran and carbaryl in fruits and vegetables

Authors

MingYan Wang, University of WollongongFollow
JunRao Huang, HuaiHai Institute of Technology
Meng Wang, University of WollongongFollow
DongEn Zhang, Huaihai Institute of Technology
Jun Chen, University of WollongongFollow

RIS ID

86064

Publication Details

Wang, M., Huang, J., Wang, M., Zhang, D. & Chen, J. (2014). Electrochemical nonenzymatic sensor based on CoO decorated reduced graphene oxide for the simultaneous determination of carbofuran and carbaryl in fruits and vegetables. Food Chemistry, 151 191-197.

Abstract

A novel nonenzymatic sensor based on cobalt (II) oxide (CoO)-decorated reduced graphene oxide (rGO) was developed for the detection of carbofuran (CBF) and carbaryl (CBR). Two well-defined and separate differential pulse voltammetric peaks for CBF and CBR were obtained with the CoO/rGO sensor in a mixed solution, making the simultaneous detection of both carbamate pesticides possible. The nonenzymatic sensor demonstrated a linear relationship over a wide concentration range of 0.2–70 μM (R = 0.9996) for CBF and 0.5–200 μM (R = 0.9995) for CBR. The lower detection limit of the sensor was 4.2 μg/L for CBF and 7.5 μg/L for CBR (S/N = 3). The developed sensor was used to detect CBF and CBR in fruit and vegetable samples and yielded satisfactory results.