Research Article
In Situ Detection of Trace Furfural in Aqueous Solution Based on Au Nanoparticle/Au Film Surface-Enhanced Raman Spectroscopy
Figure 5
(a) SERS signals of furfural at different concentrations collected on the six-layered substrates and (b) the SERS intensity of furfural peak (1665 cm−1) at different concentration.
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