Constructing graphene oxide/Au nanoparticle cellulose membranes for SERS detection of mixed pesticide residues in edible chrysanthemum

Zhao, Zhilei; Cao, Mingshuo; Wei, Dizhe; Li, Xiangyang; Wang, Meng; Zhai, Wenlei

doi:10.1039/d3an02030d

Cited by 4 publications

(1 citation statement)

References 46 publications

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“…SERS can achieve sensitivity at the single-molecule level, making it one of the most sensitive analytical tools to date [ 35 , 36 ]. Benefitting from these merits, it has been applied in various areas such as food safety, point-of-care testing, environmental monitoring and security checks [ 37 , 38 , 39 , 40 ]. The combination of SERS and ICA has been proven to effectively improve the sensitivity and capability of quantitative analysis compared with traditional ICA methods [ 41 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Hybrid Magnetic Nanoparticles for Sensitive and Rapid Detection of Phorate Residue in Celery Using SERS Immunochromatography Assay

Li,

Qian,

Tao

et al. 2024

Nanomaterials

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Extensive use of pesticides in agricultural production has been causing serious health threats to humans and animals. Among them, phorate is a highly toxic organophosphorus insecticide that has been widely used in planting. Due to its harmful effects on human and animal health, it has been restricted for use in many countries. Analytical methods for the rapid and sensitive detection of phorate residues in agricultural products are urgently needed. In this study, a new method was developed by combining surface-enhanced Raman spectroscopy (SERS) and immunochromatography assay (ICA). Hybrid magnetic Fe3O4@Au@DTNB-Ab nanoprobes were prepared by modifying and growing Au nanoseeds on an Fe3O4 core. SERS activity of the nanoprobe was optimized by adjusting the concentration of the Au precursor. A rapid and sensitive assay was established by replacing the traditional colloidal gold-based ICA with hybrid SERS nanoprobes for SERS-ICA. After optimizing parameters including coating antibody concentrations and the composition and pH of the buffer solution, the limit of detection (LOD) for phorate could reach 1 ng/mL, with a linear range of 5~100 ng/mL. This LOD is remarkably lower than the maximum residue limit in vegetables and fruits set by the Chinese government. The feasibility of this method was further examined by conducting a spiking test with celery as the real sample. The result demonstrated that this method could serve as a promising platform for rapid and sensitive detection of phorate in agricultural products.

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Section: Introductionmentioning

confidence: 99%

Preparation of Hybrid Magnetic Nanoparticles for Sensitive and Rapid Detection of Phorate Residue in Celery Using SERS Immunochromatography Assay

Li,

Qian,

Tao

et al. 2024

Nanomaterials

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Fast and on-site detection of fenthion in rice using core-shell Au@Ag nanoparticles and a portable Raman spectrometer

He,

et al. 2025

Journal of Food Composition and Analysis

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Molecular separation applications of next-generation graphene oxide composite membranes with enhanced properties: Current status and future prospects

Li,

Lv,

Tang

et al. 2025

Separation and Purification Technology

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Constructing graphene oxide/Au nanoparticle cellulose membranes for SERS detection of mixed pesticide residues in edible chrysanthemum

Abstract: Edible chrysanthemum is widely cultivated and used as an important ingredient of medicine, tea and multifunctional food. During the planting of chrysanthemum, pesticides are extensively used for preventing plant diseases...

Cited by 4 publications

References 46 publications

Preparation of Hybrid Magnetic Nanoparticles for Sensitive and Rapid Detection of Phorate Residue in Celery Using SERS Immunochromatography Assay

Preparation of Hybrid Magnetic Nanoparticles for Sensitive and Rapid Detection of Phorate Residue in Celery Using SERS Immunochromatography Assay

Fast and on-site detection of fenthion in rice using core-shell Au@Ag nanoparticles and a portable Raman spectrometer

Molecular separation applications of next-generation graphene oxide composite membranes with enhanced properties: Current status and future prospects

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