A novel biosensor based on photoelectro-synergistic catalysis for flow-injection analysis system/amperometric detection of organophosphorous pesticides

Wei, Yinyin; Li, Ying; Qu, Yunhe; Xiao, Fei; Shi, Guoyue; Jin, Litong

doi:10.1016/j.aca.2009.03.045

Cited by 40 publications

(18 citation statements)

References 25 publications

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“…Recently, starting from 2009, a very interesting approach was also proposed, based on photoelectrochemical detection through photoactive electrodes, such as PbO 2 /TiO 2 /Ti (Wei et al, 2009), bismuth oxyiodide flake array (Gong et al, 2012) and nitrogen and fluorine co-doped TiO 2 nanotubes (Huang et al, 2013). In presence of irradiation, electrons can be excited and move to the conduction band, leaving holes in the valence band.…”

Section: Enzymes Employed In Biosensors Based On Enzyme Inhibitionmentioning

confidence: 98%

Recent advances in biosensors based on enzyme inhibition

Amine

Arduini

Moscone

et al. 2016

Biosensors and Bioelectronics

187

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Section: Enzymes Employed In Biosensors Based On Enzyme Inhibitionmentioning

confidence: 98%

Recent advances in biosensors based on enzyme inhibition

Amine

Arduini

Moscone

et al. 2016

Biosensors and Bioelectronics

187

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“…The kinetic effect of the photo-excited electrode material (poly-hematoxylin) was exploited for a faster NADH oxidation compared to the electrochemical process. A similar strategy was exploited in a biosensor for organophosphorus pesticides, with performance evaluated for trichlorfon [188].…”

Section: Kinetic-based Applicationsmentioning

confidence: 99%

A critical review on photochemical conversions in flow analysis

Rocha

Kamogawa

Rocha

2015

Analytica Chimica Acta

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“…Many efforts have been made to develop sensitive, convenient and effective methods for OP residues analysis in environmental and other samples [1,2]. Gas chromatography (GC) [3,4], GC-Mass Spectrometry (MS) [5], and high performance liquid chromatography (HPLC)-MS [6–8] are commonly used methods to successfully detect OP residues in practical samples with high selectivity, sufficient sensitivity and precision.…”

Section: Introductionmentioning

confidence: 99%

A Disposable Organophosphorus Pesticides Enzyme Biosensor Based on Magnetic Composite Nano-Particles Modified Screen Printed Carbon Electrode

Gan

Yang

Xie

et al. 2010

Sensors

133

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A disposable organophosphorus pesticides (OPs) enzyme biosensor based on magnetic composite nanoparticle-modified screen printed carbon electrodes (SPCE) has been developed. Firstly, an acetylcholinesterase (AChE)-coated Fe3O4/Au (GMP) magnetic nanoparticulate (GMP-AChE) was synthesized. Then, GMP-AChE was absorbed on the surface of a SPCE modified by carbon nanotubes (CNTs)/nano-ZrO2/prussian blue (PB)/Nafion (Nf) composite membrane by an external magnetic field. Thus, the biosensor (SPCE│CNTs/ZrO2/PB/Nf│GMP-AChE) for OPs was fabricated. The surface of the biosensor was characterized by scanning electron micrography (SEM) and X-ray fluorescence spectrometery (XRFS) and its electrochemical properties were studied by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The degree of inhibition (A%) of the AChE by OPs was determined by measuring the reduction current of the PB generated by the AChE-catalyzed hydrolysis of acetylthiocholine (ATCh). In pH = 7.5 KNO3 solution, the A was related linearly to the concentration of dimethoate in the range from 1.0 × 10−3–10 ng·mL−1 with a detection limit of 5.6 × 10−4 ng·mL−1. The recovery rates in Chinese cabbage exhibited a range of 88%–105%. The results were consistent with the standard gas chromatography (GC) method. Compared with other enzyme biosensors the proposed biosensor exhibited high sensitivity, good selectivity with disposable, low consumption of sample. In particular its surface can be easily renewed by removal of the magnet. The convenient, fast and sensitive voltammetric measurement opens new opportunities for OPs analysis.

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A novel biosensor based on photoelectro-synergistic catalysis for flow-injection analysis system/amperometric detection of organophosphorous pesticides

Cited by 40 publications

References 25 publications

Recent advances in biosensors based on enzyme inhibition

Recent advances in biosensors based on enzyme inhibition

A critical review on photochemical conversions in flow analysis

A Disposable Organophosphorus Pesticides Enzyme Biosensor Based on Magnetic Composite Nano-Particles Modified Screen Printed Carbon Electrode

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