Fabrication of an ultra-sensitive electrochemical DNA biosensor based on CT-DNA/NiFe2O4NPs/Au/CPE for detecting rizatriptan benzoate

Nouri, Maedeh; Rahimnejad, Mostafa; Darzi, Ghasem Najafpour; Moghadamnia, Ali Akbar

doi:10.1016/j.envres.2023.116801

Cited by 2 publications

(1 citation statement)

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“…However, numerous studies have found that metals, whether pure or doped, are prone to contamination due to their active redox properties, which compromise the stability of detection. For instance, Nouri et al developed a novel electrochemical biosensor for the highly sensitive detection of rizatriptan benzoate in pharmaceutical preparations and biological samples by modifying a carbon paste electrode (CPE) with double-stranded DNA, nickel ferrite magnetic nanoparticles (NiFe 2 O 4 NPs), and gold nanoparticles (AuNPs), and the sensor exhibited high selectivity and stability [ 27 ]. Nithyayini’s team developed a sensing platform integrating NiFe 2 O 4 nanoparticles into a CPE, which significantly enhanced the nitrite monitoring sensitivity in the range of 0.1 to 1000 μM due to the combination of the nanomaterials and conductive carbon, which resulted in the enhanced catalytic activity and stability of the sensor in oxidizing nitrite [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Ag-CeO2 Based on Electrochemical Sensor for High-Efficient On-Site Detection of Nitrite in Aquaculture Water and Beverages

Zhao,

Zhang,

Zhou

et al. 2024

Molecules

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Nitrite is one of the most common nitrogenous compounds, which is not only an important indicator of aquaculture water but also widely used as a food additive. Its potential toxicity poses a huge threat to aquatic products and human health. Therefore, it is important to develop a convenient and rapid sensor for the high-efficient onsite detection of nitrite. In this work, a novel electrochemical sensor was developed for the qualitative and quantitative analysis of nitrite. The developed nitrite electrochemical detection system is easily applied in onsite detection. The electrochemical working electrode was constructed based on the combination of Ag-CeO2 and conductive carbon paste (CPE) with excellent electrocatalysis activity and rapid electron transfer ability. By the application of the developed system and under the optimal conditions, the linear range was from 40.0 μM to 500.0 μM, and the detection limit was reduced to 4.3 μM. The recovery was between 92.1% and 108.1%, and the relative standard deviations (RSDs) were 0.49%~9.31%. The sensor exhibited superior reproducibility, high stability sensitivity, and anti-interference ability, confirming its effectiveness for nitrite analysis. Finally, the developed electrochemical sensor was successfully applied to detect nitrite in beverages and aquaculture water samples, indicating that this approach has great potential in onsite food testing and environmental monitoring.

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Section: Introductionmentioning

confidence: 99%