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Issue 5, 2017
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Application of β-cyclodextrin–reduced graphene oxide nanosheets for enhanced electrochemical sensing of the nitenpyram residue in real samples

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Abstract

A sensitive, simple and cost-effective method for large-scale monitoring of nitenpyram (NIT) is important in food quality control. This study presents a new approach for the rapid detection of NIT using a glassy carbon electrode modified by β-cyclodextrin–reduced graphene oxide nanosheets, which exhibits a considerable improvement of the reduction peak current of NIT. After incubation at 0 °C for 8 min, the resulting electrochemical platform presented high sensitivity with a wide linear range from 5 × 10−7 M to 2.2 × 10−5 M as well as a low detection limit of 1.1 × 10−7 M by linear sweep voltammetry. In addition, water-extraction followed by liquid–liquid extraction pretreatment has been developed to improve the extraction rate and efficiently eliminate the interferent. This method has been applied for the determination of spiked NIT in three kinds of rice samples with the detection limit of 0.3 mg kg−1. The recovery was 74.56–107.15% and the results were validated through HPLC.

Graphical abstract: Application of β-cyclodextrin–reduced graphene oxide nanosheets for enhanced electrochemical sensing of the nitenpyram residue in real samples

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Publication details

The article was received on 14 Sep 2016, accepted on 20 Jan 2017 and first published on 23 Jan 2017


Article type: Paper
DOI: 10.1039/C6NJ02891H
Citation: New J. Chem., 2017,41, 2169-2177

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    Application of β-cyclodextrin–reduced graphene oxide nanosheets for enhanced electrochemical sensing of the nitenpyram residue in real samples

    M. Zhang, H. Zhang, X. Zhai, X. Yang, H. Zhao, J. Wang, A. Dong and Z. Wang, New J. Chem., 2017, 41, 2169
    DOI: 10.1039/C6NJ02891H

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