NDLI: A Biomimetic Sensor with Signal Enhancement of Ferriferrous Oxide-Reduced Graphene Oxide Nanocomposites for Ultratrace Levels Quantification of Methamidophos or Omethoate in Vegetables

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A Biomimetic Sensor with Signal Enhancement of Ferriferrous Oxide-Reduced Graphene Oxide Nanocomposites for Ultratrace Levels Quantification of Methamidophos or Omethoate in Vegetables

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Food Analytical Methods : Volume 10, Issue 3, March 2017

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A Biomimetic Sensor with Signal Enhancement of Ferriferrous Oxide-Reduced Graphene Oxide Nanocomposites for Ultratrace Levels Quantification of Methamidophos or Omethoate in Vegetables

Content Provider	Springer Nature Link
Author	Shi, Xiujuan Lu, Juxiu Yin, Hongzong Qiao, Xuguang Xu, Zhixiang
Copyright Year	2016
Abstract	In this study, we designed and synthesized Fe$_{3}$O$_{4}$/reduced graphene oxide (Fe$_{3}$O$_{4}$/rGO) and MIL@MIP, which were characterized using transmission electron microscopy (TEM), X-ray diffraction, Fourier transform infrared (FT-IR), cyclic voltammetry (CV), and differential pulse voltammetry (DPV). Here, reports a novel biomimetic electrochemical sensor (BECS) sensitized with Fe$_{3}$O$_{4}$/reduced graphene oxide (Fe$_{3}$O$_{4}$/rGO) nanocomposite using MIL@MIP film as recognition element for ultrasensitive quantification of methamidophos or omethoate. The BECS offered fast responses for methamidophos and omethoate with wide linear response ranges of 1.0 × 10$^{−7}$–1.0 × 10$^{−12}$ and 1.0 × 10$^{−7}$–1.0 × 10$^{−13}$ mol/L, respectively. Under optimized conditions, the limit of detection (LOD; S/N = 3) of the BECS method was 2.67 × 10$^{−13}$ mol/L for methamidophos and 2.05 × 10$^{−14}$ mol/L for omethoate. The BECS was applied to detection of methamidophos and omethoate in spiked cucumber and kidney bean samples, and good recoveries varied from 88.2 to 96.9 %. This proposed method was adopted for the determination of the methamidophos or omethoate residues in the rape sample, and the results were also verified using the method of gas chromatography.
Starting Page	910
Ending Page	920
Page Count	11
File Format	PDF
ISSN	19369751
Journal	Food Analytical Methods
Volume Number	10
Issue Number	4
e-ISSN	1936976X
Language	English
Publisher	Springer US
Publisher Date	2016-09-09
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biomimetic electrochemical sensor Molecularly imprinted polymer Ferriferrous oxide Reduced graphene oxide Metal organic framework Food Science Chemistry/Food Science Microbiology Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Safety Research Safety, Risk, Reliability and Quality Applied Microbiology and Biotechnology Food Science

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A Biomimetic Sensor with Signal Enhancement of Ferriferrous Oxide-Reduced Graphene Oxide Nanocomposites for Ultratrace Levels Quantification of Methamidophos or Omethoate in Vegetables

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A Biomimetic Sensor with Signal Enhancement of Ferriferrous Oxide-Reduced Graphene Oxide Nanocomposites for Ultratrace Levels Quantification of Methamidophos or Omethoate in Vegetables