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A Filter-based Surface Enhanced Raman Spectroscopic Assay for Rapid Detection of Chemical Contaminants
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Silver coated PS microsphere array SERS microfluidic chip for pesticide detection.

Wang Peng1,2,3,4,5, Zhihan Xu1, Chao Yi1

  • 1College of Engineering, Huazhong Agricultural University, Wuhan, 430070, China.

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|July 26, 2024
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Summary
This summary is machine-generated.

A new SERS microfluidic chip method rapidly detects carbendazim and acetamidine pesticides. This technology offers a promising approach for monitoring pesticide residues in crops, enhancing food safety.

Keywords:
Microfluidic chipPesticide residueSERS substrateSurface-enhanced Raman scattering

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Area of Science:

  • Analytical Chemistry
  • Materials Science

Background:

  • Carbendazim and acetamidine are widely used pesticides in oilseed rape cultivation.
  • Accurate detection of pesticide residues is crucial for food safety and crop management.

Purpose of the Study:

  • To develop a rapid, accurate, and reliable method for detecting carbendazim and acetamidine.
  • To utilize Surface-Enhanced Raman Spectroscopy (SERS) microfluidic chip technology for pesticide analysis.

Main Methods:

  • Preparation of a silver-coated polystyrene microsphere (Ag-ps) SERS substrate using spin coating and magnetron sputtering.
  • Fabrication and application of a SERS microfluidic chip for pesticide detection.
  • Characterization of the SERS substrate's enhancement factor and linearity of detection curves.

Main Results:

  • The prepared SERS substrate achieved a high enhancement factor of 2.4 × 10^10.
  • The detection working curves showed excellent linearity, with R^2 values of 0.987 and 0.994.
  • A low limit of detection of 0.01 mg/mL was achieved for the target pesticides.

Conclusions:

  • The SERS microfluidic chip technology provides a sensitive and efficient platform for detecting carbendazim and acetamidine.
  • This method demonstrates significant potential for the routine monitoring of pesticide residues in agricultural products.
  • The developed technique offers broad application prospects in ensuring food safety and quality control.