Journal of Guangdong University of Technology ›› 2023, Vol. 40 ›› Issue (05): 113-116.doi: 10.12052/gdutxb.220151

• Comprehensive Studies • Previous Articles    

Rapid Determination of Trace Octylphenol by Surface Enhanced Raman Scattering Combined with Molecular Engram

Yang Ge1, Li Ping2   

  1. 1. Zhaoqing Environmental Protection Monitoring Station, Zhaoqing 526040, China;
    2. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2022-10-08 Published:2023-09-26

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Abstract: Octylphenol is widely used in coating, rubber and other industries. It is a typical Phenolic Endocrine Disruptors (PEDs). Low concentration of octylphenol in environmental medium may also cause great environmental harm. It is urgent to develop efficient and rapid detection methods to warn and predict its environmental risks. In this study, microspheres were prepared with silver particles as core and octylphenol engram on surface. A method for rapid determination of trace octylphenol by surface enhanced Raman scattering and molecular engram was tested. The results of Transmission Electron Microscope (TEM) , X-ray diffraction (XRD) and elemental Energy Dispersive Spectroscopy (EDS) showed that the silver core octylphenol engram microspheres are the core-shell structure of silica wrapped with shell, octylphenol is imprinted on the surface of the shell, and the shell did not affect the crystal structure of the silver core. The shell thickness affects the selective adsorption of octylphenol and Raman light enhancement effect, the best shell thickness of microspheres is 25 nm. The minimum detection limit of octylphenol by surface enhanced Raman spectroscopy combined with molecular engram is 10−12 mol/L.

Key words: surface enhanced Raman scattering, molecular engram, octylphenol

CLC Number: 

  • X832
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