An upconversion nanosensor with phenolic-like functionality for accurate identification of chlorpyrifos in grapes

Wu, Meng; Yi, Jiaqi; Yin, Chenhui; Sun, Qijun; Gao, Lei; Niu, Na; Chen, Ligang

doi:10.1016/j.foodchem.2023.135859

Cited by 8 publications

(4 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the one hand, FRET usually requires that the distance between the quencher and the fluorescent donor is close enough for the electron or energy transfer process being realized (Li, Liu, et al., 2021). Wu et al., established a turn‐on fluorescent sensor based on upconversion nanoparticles to detect CPF with FRET effect while avoiding interference from nontarget fluorescent background (Wu et al., 2023). Single‐dye probe systems are known to be susceptible to the detection environment and often present false positive signals (Hu et al., 2019).…”

Section: Fluorescence Methodsmentioning

confidence: 99%

Detection of food contaminants: A review of established rapid analytical techniques and their applications and limitations

Ling,

Yang,

Zhang

et al. 2024

Food Safety and Health

View full text Add to dashboard Cite

Food contaminants have consistently posed a serious threat to human health and have caused various food safety problems. The most common techniques currently used for the detection of food contaminants, include instrumental and immunoassay methods; however, these traditional methods have shown some limitations when applied to the analysis of food contaminants. Therefore, in recent years, more and more researchers have been devoted to the development of rapid, reliable, sensitive, and suitable detection techniques for the detection of food contaminants in food matrices. In this review, we first classify the analytical methods proposed in recent years into colorimetric methods, fluorescence methods, photoelectrochemical methods, electrochemical methods, nucleic acid amplification methods, and other methods, and illustrate their detection principles. In addition, the paper highlights the strategies and recent research advances for each method through typical application examples. Finally, the future perspectives of these analytical methods are presented. We hope that this review will provide researchers with valuable insights to guide the sensitive detection of food contaminants.

show abstract

Section: Fluorescence Methodsmentioning

confidence: 99%

Detection of food contaminants: A review of established rapid analytical techniques and their applications and limitations

Ling,

Yang,

Zhang

et al. 2024

Food Safety and Health

View full text Add to dashboard Cite

show abstract

“…Chlorpyrifos (CPF) is widely used as an organophosphorus pesticide and acaricide, noted for its broad-spectrum efficacy in various agricultural contexts. [1][2][3] However, its neurotoxic and endocrine-disrupting properties, coupled with improper application, can result in the excessive accumulation of CPF residues in food crops. 4 These residues often exceed established safety thresholds, posing significant health risks to humans.…”

Section: Introductionmentioning

confidence: 99%

“…10 However, these conventional methods suffer from limitations such as high operational costs, limited stability, and suboptimal reproducibility. 3,11,12 Alternative methodologies, such as electrochemical detection, offer increased sensitivity, cost efficiency, and rapid throughput, making them favorable for CPF analysis. 13 Nonetheless, enhancing the selectivity, stability, and repeatability of electrochemical methods remains crucial to improve their efficiency in detecting CPF.…”

Section: Introductionmentioning

confidence: 99%

“…To date, several analytical techniques for CPF detection have been employed, including high performance liquid chromatography, 6 gas chromatography, 7 ultraviolet spectrophotometry, 8 enzyme inhibition assays, 9 and immunoassays 10 . However, these conventional methods suffer from limitations such as high operational costs, limited stability, and suboptimal reproducibility 3,11,12 . Alternative methodologies, such as electrochemical detection, offer increased sensitivity, cost efficiency, and rapid throughput, making them favorable for CPF analysis 13 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A highly sensitive electrochemical sensor based on surface molecularly imprinted polymers and graphene carbon nanotubes for highly selective detection of chlorpyrifos

Huang,

Zhao,

Wang

et al. 2024

Polymers for Advanced Techs

View full text Add to dashboard Cite

Pesticide residues represent a serious challenge for environmental protection, food safety, and public health. Addressing this challenge, this study strategically developed an electrochemical sensor with molecularly imprinted polymers (MIPs) as the recognition element to accurately detect chlorpyrifos in environmental samples. In this study, we used vinyl‐modified SiO2 as the matrix, methacrylic acid as the functional monomer, ethylene glycol dimethacrylate as the cross‐linker, and azobisisobutyronitrile as the initiator to synthesize the surface‐imprinted polymers. The development of the electrochemical sensor involved a detailed modification of the electrode, first by integrating carboxylated multi‐walled carbon nanotubes and graphene oxide to improve its properties, and then by applying a suspension of MIPs to the glassy carbon electrode. This process resulted in a sensor capable of detecting chlorpyrifos in environmental samples with high sensitivity. The electrochemical sensor, designed for chlorpyrifos detection, exhibited a robust linear response in peak current to varying concentrations of chlorpyrifos, ranging from 1 × 10−11 to 1 × 10−5 mol L−1. It achieved a detection limit as low as 1.85 × 10−11 mol L−1 (S/N = 3). Testing confirmed the sensor's exceptional repeatability, stability, and high selectivity towards chlorpyrifos, underscoring its efficacy. The demonstrated capabilities of this sensor suggest its substantial potential for widespread use in pesticide regulation and environmental conservation efforts.

show abstract

Gold-copper-doped lanthanide luminescent metal-organic backbone induced self-enhanced molecularly imprinted ECL sensors for ultra-sensitive detection of chlorpyrifos

Fang,

Li,

Zang

et al. 2024

Food Chemistry

View full text Add to dashboard Cite

An upconversion nanosensor with phenolic-like functionality for accurate identification of chlorpyrifos in grapes

Cited by 8 publications

References 38 publications

Detection of food contaminants: A review of established rapid analytical techniques and their applications and limitations

Detection of food contaminants: A review of established rapid analytical techniques and their applications and limitations

A highly sensitive electrochemical sensor based on surface molecularly imprinted polymers and graphene carbon nanotubes for highly selective detection of chlorpyrifos

Gold-copper-doped lanthanide luminescent metal-organic backbone induced self-enhanced molecularly imprinted ECL sensors for ultra-sensitive detection of chlorpyrifos

Contact Info

Product

Resources

About