Electrochemical sensing of methyl parathion on magnetic molecularly imprinted polymer

Hassan, Amal H.A.; Moura, Silio Lima; Ali, Fatma; Moselhy, Walaa A.; Sotomayor, Marı́a Del Pilar Taboada; Pividori, María Isabel

doi:10.1016/j.bios.2018.06.052

Cited by 87 publications

(19 citation statements)

References 30 publications

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“…The electrochemical measurements were performed by a CH instruments using a magneto-actuated graphite-epoxy carbon (m-GEC) [30] as working electrode (geometric area = 0.5 cm 2 ), prepared as detailed shown in Figure S1 (Supp data). The characterization of the magneto electrodes (including reproducibility of the construction, renewal and reusability, and stability has been extensively reported by our research group [33].…”

Section: Instrumentationmentioning

confidence: 99%

“…Magnetic-MIP was applied in different fields for different purposes, ranging from separation [24][25][26], catalysis [27], and magneto immunoassays [28]. Lately, our group reported a simple method combining the isolation and preconcentration by magnetic-MIPs on m-GEC (graphite-epoxy composite magneto-actuated electrodes) of electroactive molecules for the direct electrochemical detection in complex samples [29,30].…”

Section: Introductionmentioning

confidence: 99%

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Biomimetic magnetic sensor for electrochemical determination of scombrotoxin in fish

Hassan

Sappia

Moura

et al. 2019

Talanta

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This work addresses a novel, rapid and cost-effective approach for the electrochemical sensing of scombrotoxin (histamine) in fish based on magnetic molecularly imprinted polymer (magnetic-MIP). The histamine magnetic-MIP was synthesized by the core-shell method using histamine as a template, and 2-vinyl pyridine as functional monomer. The magnetic-MIP was characterized by TEM, SEM, and confocal microscopy. Additionally, the binding capacity of magnetic-MIP toward histamine was investigated and compared with magnetic-NIP. This biomimetic material merged the advantages of MIPs and magnetic particles (MPs), including low cost of production, stability, high binding capacity and can be easily separated by the aid of a permanent magnet. The magnetic-MIP was integrated into magneto-actuated electrodes for the direct electrochemical detection of histamine preconcentrated from fish samples. The results revealed that this approach succeeded in the preconcentration and determination of histamine with a LOD as low as 1.6 ×10-6 mg L-1 , much lower than index for fish spoilage (50 mg kg-1) accordingly to the legislation. Furthermore, the analytical performance was validated for the determination of histamine in scombroid fish samples with recovery values ranging from 96.8-102.0 %, confirm so it can be applied easily for routine food examination.

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Section: Instrumentationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biomimetic magnetic sensor for electrochemical determination of scombrotoxin in fish

Hassan

Sappia

Moura

et al. 2019

Talanta

Self Cite

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“…They can be easily miniaturized and integrated with other analytical methods [39,40]. A magneto-actuated enzyme-free electrochemical sensor based on magnetic molecularly imprinted polymer was developed, and it showed outstanding analytical performance for the detection of methyl parathion in fish, with a limit of detection of as low as 1.22 × 10 −6 mg L −1 and recovery values ranging from 89.4 to 94.7% [41]. Da Silva and coworkers [42] developed an acetylcholinesterase (AChE) biosensor for rapid detection of carbaryl in tomato samples by using electrode modified with reduced graphene oxide (rGO).…”

Section: Pesticide Residuesmentioning

confidence: 99%

Electrochemical Sensors for Food Safety

Zeng¹,

Peng²,

Wu³

et al. 2019

Nutrition in Health and Disease - Our Challenges Now and Forthcoming Time

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Food safety poses an increasing threat to human health worldwide. The development of analytical methods and techniques to ensure food safety is therefore of great importance. Electrochemical sensors provide unique opportunity to realize sensitive, accurate, rapid, and portable detection for food safety. They have the potential to overcome the restrictions and limitations of traditional methods. In this chapter, we review the progress of electrochemical sensors for the detection of food contaminants including heavy metals, illegal additives, pesticide residues, veterinary drug residues, biological toxins, and foodborne pathogen. Future perspectives and challenges are also discussed.

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“…Owing to the convenience and high efficiency of magnetic separation process, MSPE can get over the shortage of tedious or time consuming column packing and phase separation of traditional SPE [2]. Recently, some efforts have been made to prepare magnetic adsorbents, such as surface-modified magnetic nanoparticles and magnetic composites composed of magnetic nanoparticles combining carbon nanomaterials, molecularly imprinted polymers or metal‒organic frameworks (MOFs) [9,10].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Solid-Phase Extraction of Pyrethroid Pesticides from Environmental Water Samples Using Deep Eutectic Solvent-type Surfactant Modified Magnetic Zeolitic Imidazolate Framework-8

Liu

Jiang

et al. 2019

Molecules

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A simple, sensitive and effective magnetic solid-phase extraction (MSPE) technique was developed for the extraction of pyrethroid pesticides from environmental water samples, followed by gas chromatography tandem triple quadrupole mass spectrometry determination. An adsorbent of magnetic zeolitic imidazolate framework-8@deep eutectic solvent (M-ZIF-8@DES) was prepared using deep eutectic solvent coated on the surface of M-ZIF-8. The features of M-ZIF-8@DES were confirmed by material characterizations, and the results indicated that M-ZIF-8@DES has a good magnetism (61.3 emu g−1), a decent surface area (96.83 m2 g−1) and pore volume (0.292 mL g−1). Single factor experiments were carried out to investigate the effect of different conditions on the performance of MSPE. Under the optimal conditions, the developed method performs good linearity (R2 ≥ 0.9916) in the concentration range of 1–500 μg L−1. The limits of detection were in the range of 0.05–0.21 μg L−1 (signal/noise = 3/1). The intraday relative standard deviation (RSD) and interday RSD were less than 9.40%. Finally, the proposed technique was applied for the determination of pyrethroid pesticides in environmental water samples. This work shows the potential of DES-modified metal-organic frameworks for different sample pretreatment techniques.

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Electrochemical sensing of methyl parathion on magnetic molecularly imprinted polymer

Cited by 87 publications

References 30 publications

Biomimetic magnetic sensor for electrochemical determination of scombrotoxin in fish

Biomimetic magnetic sensor for electrochemical determination of scombrotoxin in fish

Electrochemical Sensors for Food Safety

Magnetic Solid-Phase Extraction of Pyrethroid Pesticides from Environmental Water Samples Using Deep Eutectic Solvent-type Surfactant Modified Magnetic Zeolitic Imidazolate Framework-8

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