A simple approach for the ultrasensitive detection of paraquat residue in adzuki beans by surface-enhanced Raman scattering

Tsen, Chao-Ming; Yu, Chih-Sheng; Chuang, Wei-Chen; Chen, Mingjun; Lin, Shao-Kai; Shyu, Tsyr-Horng; Wang, Yung-Hsiang; Li, Cheng-Chien; Chao, Wei-Chung; Chuang, Chun‐Yu

doi:10.1039/c8an01845f

Cited by 32 publications

(21 citation statements)

References 35 publications

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“…The experimental Raman bands of paraquat are detailed in Table along with the respective vibrational assignments . The intensification of the band at 1642 cm –1 has already been reported in the SERS analysis of paraquat , . Here, the enhancement of this band when using the Au DSNF‐COOH colloids suggests that electrostatic interactions have been established between the carboxylate groups (PAMAM dendrimer) and the positively charged quaternary nitrogens (paraquat), near the surface of the Au nanoparticles.…”

Section: Resultssupporting

confidence: 56%

Dendrimer‐Based Gold Nanostructures for SERS Detection of Pesticides in Water

et al. 2020

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Dendrimers are polymers with well‐defined architectures and tunable chemistry, which make them useful in a number of applications. Herein, the chemistry of poly(amido)amine (PAMAM) dendrimers with different functional groups was explored to produce a variety of plasmonic systems based on Au colloidal nanoparticles. The resulting systems present long‐term colloidal stability and were investigated as sensitive platforms for surface‐enhanced Raman scattering (SERS). The application of these SERS platforms for the detection of water trace pollutants, was explored through the analysis of selected pesticides. Noteworthy, dendrimer coated Au nanoparticles with tunable properties such as size, shape and surface chemistry, were obtained by varying the dendrimer chemical properties. The surface chemistry of PAMAM capped Au colloids was explored in order to produce target selective SERS substrates for pesticide detection, that allowed to reach detection limits down to 10 nm.

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Section: Resultssupporting

confidence: 56%

Dendrimer‐Based Gold Nanostructures for SERS Detection of Pesticides in Water

et al. 2020

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“…The use of pesticides as chemical compounds to regulate the growth of plants and control diseases, grasses, insects, and other harmful organisms provides the production guarantee. As commonly used pesticides, paraquat is a fast‐killing herbicide, which absorbs and kills the green plant quickly, thiabendazole and tricyclazole are fungicides that can prevent mold, blight, and other diseases, and isocarbophos is a fast‐acting organophosphorus insecticide for pest control . However, the pesticide residues may cause indelible harm to human health, and the risk keeps provoking consumers' concerns from a food safety point of view.…”

Section: Introductionmentioning

confidence: 99%

Rapid and sensitive detection of pesticide residues using dynamic surface‐enhanced Raman spectroscopy

Chen

Long

Song

et al. 2020

J Raman Spectroscopy

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Pesticide residues are one of the major food safety concerns for consumers all over the world, and it is crucial to develop simple, rapid, and effective method for the detection of pesticide residues. In the study, we report the sensitive detection of pesticides with the dynamic surface‐enhanced Raman spectroscopy (dynamic SERS) method. The dynamic SERS method provides excellent detection sensitivity at the metastable state of plasmonic nanoparticles in the sessile drop, which is a critical state between the wet state and dry state during the volatilization process. With this simple and rapid method, the SERS performance towards four pesticides, paraquat, thiabendazole, tricyclazole, and isocarbophos, is investigated with silver nanoparticles (AgNPs) as the enhancing reagents. The characteristic SERS spectra of paraquat, thiabendazole, tricyclazole, and isocarbophos can be detected at concentrations down to 1 × 10−9 M, 5 × 10−9 M, 5.28 × 10−9 M, and 3.45 × 10−7 M, respectively. The pesticides are also discriminable at the same concentrations as the standard solution counterparts from the pesticides spiked vegetable extracts, and linear relationship can be drawn from the characteristic peak intensities and negative logarithm of concentrations of the four pesticides. Therefore, the simple and rapid dynamic SERS method shows great potential in the practical detection of pesticide residues.

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“…From prior investigations, we have identified the prospective utility of surface-enhanced Raman scattering (SERS) for the rapid monitoring of BA in pickled foods (Tsen et al, 2019;Xue et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Novel strategy for food safety risk management and communication: Risk identification for benzoic acid residues in pickled vegetables

Lin

Tsai

Zhang

et al. 2020

Food Science & Nutrition

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A simple approach for the ultrasensitive detection of paraquat residue in adzuki beans by surface-enhanced Raman scattering

Abstract: Paraquat (PQ), has been used in many countries for controlling weed growth in agriculture because of its quick-acting and nonselective contact with green plant tissue.

Cited by 32 publications

References 35 publications

Dendrimer‐Based Gold Nanostructures for SERS Detection of Pesticides in Water

Dendrimer‐Based Gold Nanostructures for SERS Detection of Pesticides in Water

Rapid and sensitive detection of pesticide residues using dynamic surface‐enhanced Raman spectroscopy

Novel strategy for food safety risk management and communication: Risk identification for benzoic acid residues in pickled vegetables

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