کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1185260 | 1492140 | 2014 | 7 صفحه PDF | دانلود رایگان |
• A novel nonenzymatic sensor based on CoO/rGO was developed.
• CoO/rGO exhibits excellent electrocatalytic performance for carbofuran and carbaryl oxidation.
• Carbofuran and carbaryl were simultaneously analysed in fruit and vegetable samples.
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.
Journal: Food Chemistry - Volume 151, 15 May 2014, Pages 191–197